diff --git a/.travis.yml b/.travis.yml
index 33ddb13..55056bf 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ env:
   global:
     - ANDROID_API=28
     - ANDROID_BUILD_TOOLS=28.0.3
-    - EMULATOR_API=24
+    - EMULATOR_API=21
 
 android:
   components:
diff --git a/README.md b/README.md
index 017968b..ece266b 100644
--- a/README.md
+++ b/README.md
@@ -34,12 +34,23 @@ repositories {
 
 And add the library to your module **build.gradle**:
 
+**AndroidX**
+
+```gradle
+dependencies {
+    implementation 'com.github.javiersantos:PiracyChecker:1.2.5'
+}
+```
+
+**Pre AndroidX (no longer supported)**
+
 ```gradle
 dependencies {
     implementation 'com.github.javiersantos:PiracyChecker:1.2.4'
 }
 ```
 
+
 ## Recommendations
 * Always enable ProGuard in your production release. Always, without exceptions.
 * PiracyChecker should be included in your `onCreate` method in order to check for a valid license as soon as possible.
@@ -159,7 +170,7 @@ It will check for: Lucky Patcher, Uret Patcher, Freedom, CreeHack and HappyMod.
 
 ```kotlin
 piracyChecker {
-	enableUnauthorizedAppsCheck(true)
+	enableUnauthorizedAppsCheck()
 	...
 }.start()
 ```
@@ -168,7 +179,7 @@ piracyChecker {
 
 ```java
 new PiracyChecker(this)
-	.enableUnauthorizedAppsCheck(true)
+	.enableUnauthorizedAppsCheck()
 	...
 	.start();
 ```
@@ -220,7 +231,7 @@ piracyChecker {
 
 ```java
 new PiracyChecker(this)
-	.enableUnauthorizedAppsCheck(true)
+	.enableUnauthorizedAppsCheck()
 	.blockIfUnauthorizedAppUninstalled(preferences, "app_unauthorized") // Change "app_unauthorized" with your own value
 	...
 	.start();
@@ -244,7 +255,7 @@ piracyChecker {
 
 ```java
 new PiracyChecker(this)
-	.enableUnauthorizedAppsCheck(true)
+	.enableUnauthorizedAppsCheck()
 	.blockIfUnauthorizedAppUninstalled("license_preferences", "app_unauthorized") // Change "license_preferences" and "app_unauthorized" with your own value
 	...
 	.start();
@@ -270,7 +281,7 @@ piracyChecker {
 
 ```java
 new PiracyChecker(this)
-	.enableStoresCheck(true)
+	.enableStoresCheck()
 	...
 	.start();
 ```
@@ -293,7 +304,7 @@ piracyChecker {
 
 ```java
 new PiracyChecker(this)
-	.enableFoldersCheck(true)
+	.enableFoldersCheck()
 	...
 	.start();
 ```
@@ -315,7 +326,7 @@ piracyChecker {
 
 ```java
 new PiracyChecker(this)
-	.enableAPKCheck(true)
+	.enableAPKCheck()
 	...
 	.start();
 ```
@@ -341,7 +352,7 @@ piracyChecker {
 
 ```java
 new PiracyChecker(this)
-	.enableDebugCheck(true)
+	.enableDebugCheck()
 	...
 	.start();
 ```
@@ -353,8 +364,10 @@ new PiracyChecker(this)
 ### Verify if app is being run in an emulator
 If your app is running on an emulator outside the development process, it gives an indication that someone other than you is trying to analyze the app.
 
+**Warning!**: Using deep check can cause crashes in some specific devices.
+
 ```kotlin
-val deepCheck = fals
+val deepCheck = false
 piracyChecker {
 	.enableEmulatorCheck(deepCheck)
 	...
@@ -550,7 +563,7 @@ piracyChecker {
 new PiracyChecker(this)
 	.enableGooglePlayLicensing("BASE_64_LICENSE_KEY")
 	.enableSigningCertificate("YOUR_APK_SIGNATURE")
-	.enableUnauthorizedAppsCheck(true)
+	.enableUnauthorizedAppsCheck()
 	.saveResultToSharedPreferences("my_app_preferences", "valid_license")
 	...
 	.start();
diff --git a/app/build.gradle b/app/build.gradle
index 8f488f4..7d1e5db 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -10,7 +10,7 @@ android {
         targetSdkVersion 28
         versionCode 1
         versionName "1.0"
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
         release {
@@ -36,17 +36,20 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-    implementation 'com.android.support:design:28.0.0'
-    implementation 'com.android.support:cardview-v7:28.0.0'
     implementation project(':library')
 
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    implementation 'androidx.appcompat:appcompat:1.0.0'
+    implementation 'com.google.android.material:material:1.0.0'
+    implementation 'androidx.cardview:cardview:1.0.0'
+
     // Testing-only dependencies
     testImplementation 'junit:junit:4.12'
-    androidTestImplementation('com.android.support.test:runner:1.0.1', {
+    androidTestImplementation 'androidx.test:rules:1.1.0'
+    androidTestImplementation('androidx.test:runner:1.1.0', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    androidTestImplementation('com.android.support.test.espresso:espresso-core:3.0.1', {
+    androidTestImplementation('androidx.test.espresso:espresso-core:3.1.0', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
 }
\ No newline at end of file
diff --git a/app/src/androidTest/java/com/github/javiersantos/piracychecker/PiracyCheckerTest.java b/app/src/androidTest/java/com/github/javiersantos/piracychecker/PiracyCheckerTest.java
index fce9782..922a0de 100644
--- a/app/src/androidTest/java/com/github/javiersantos/piracychecker/PiracyCheckerTest.java
+++ b/app/src/androidTest/java/com/github/javiersantos/piracychecker/PiracyCheckerTest.java
@@ -1,9 +1,5 @@
 package com.github.javiersantos.piracychecker;
 
-import android.support.test.InstrumentationRegistry;
-import android.support.test.rule.ActivityTestRule;
-import android.support.test.runner.AndroidJUnit4;
-
 import com.github.javiersantos.piracychecker.callbacks.PiracyCheckerCallback;
 import com.github.javiersantos.piracychecker.demo.MainActivity;
 import com.github.javiersantos.piracychecker.enums.InstallerID;
@@ -19,6 +15,10 @@
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
+import androidx.test.InstrumentationRegistry;
+import androidx.test.rule.ActivityTestRule;
+import androidx.test.runner.AndroidJUnit4;
+
 import static org.junit.Assert.assertTrue;
 
 /**
@@ -26,11 +26,11 @@
  */
 @RunWith(AndroidJUnit4.class)
 public class PiracyCheckerTest {
-
+    
     @Rule
     public final ActivityTestRule<MainActivity> uiThreadTestRule =
         new ActivityTestRule<>(MainActivity.class);
-
+    
     @Test
     public void verifySigningCertificate_ALLOW() throws Throwable {
         final CountDownLatch signal = new CountDownLatch(1);
@@ -45,7 +45,7 @@ public void allow() {
                             assertTrue("PiracyChecker OK", true);
                             signal.countDown();
                         }
-
+                        
                         @Override
                         public void doNotAllow(@NotNull PiracyCheckerError error,
                                                @org.jetbrains.annotations.Nullable PirateApp app) {
@@ -60,10 +60,10 @@ public void doNotAllow(@NotNull PiracyCheckerError error,
                     .start();
             }
         });
-
+        
         signal.await(30, TimeUnit.SECONDS);
     }
-
+    
     @Test
     public void verifySigningCertificate_DONTALLOW() throws Throwable {
         final CountDownLatch signal = new CountDownLatch(1);
@@ -79,7 +79,7 @@ public void allow() {
                                        false);
                             signal.countDown();
                         }
-
+                        
                         @Override
                         public void doNotAllow(@NotNull PiracyCheckerError error,
                                                @org.jetbrains.annotations.Nullable PirateApp app) {
@@ -94,10 +94,10 @@ public void doNotAllow(@NotNull PiracyCheckerError error,
                     .start();
             }
         });
-
+        
         signal.await(30, TimeUnit.SECONDS);
     }
-
+    
     @Test
     public void verifyInstaller_DONTALLOW() throws Throwable {
         final CountDownLatch signal = new CountDownLatch(1);
@@ -117,7 +117,7 @@ public void allow() {
                                 false);
                             signal.countDown();
                         }
-
+                        
                         @Override
                         public void doNotAllow(@NotNull PiracyCheckerError error,
                                                @org.jetbrains.annotations.Nullable PirateApp app) {
@@ -132,10 +132,10 @@ public void doNotAllow(@NotNull PiracyCheckerError error,
                     .start();
             }
         });
-
+        
         signal.await(30, TimeUnit.SECONDS);
     }
-
+    
     @Test
     public void verifyUnauthorizedApps_ALLOW() throws Throwable {
         final CountDownLatch signal = new CountDownLatch(1);
@@ -143,14 +143,14 @@ public void verifyUnauthorizedApps_ALLOW() throws Throwable {
             @Override
             public void run() {
                 new PiracyChecker(InstrumentationRegistry.getTargetContext())
-                    .enableUnauthorizedAppsCheck(true)
+                    .enableUnauthorizedAppsCheck()
                     .callback(new PiracyCheckerCallback() {
                         @Override
                         public void allow() {
                             assertTrue("PiracyChecker OK", true);
                             signal.countDown();
                         }
-
+                        
                         @Override
                         public void doNotAllow(@NotNull PiracyCheckerError error,
                                                @org.jetbrains.annotations.Nullable PirateApp app) {
@@ -161,10 +161,10 @@ public void doNotAllow(@NotNull PiracyCheckerError error,
                     .start();
             }
         });
-
+        
         signal.await(30, TimeUnit.SECONDS);
     }
-
+    
     @Test
     public void verifyThirdPartyStores_ALLOW() throws Throwable {
         final CountDownLatch signal = new CountDownLatch(1);
@@ -172,14 +172,14 @@ public void verifyThirdPartyStores_ALLOW() throws Throwable {
             @Override
             public void run() {
                 new PiracyChecker(InstrumentationRegistry.getTargetContext())
-                    .enableUnauthorizedAppsCheck(true)
+                    .enableUnauthorizedAppsCheck()
                     .callback(new PiracyCheckerCallback() {
                         @Override
                         public void allow() {
                             assertTrue("PiracyChecker OK", true);
                             signal.countDown();
                         }
-
+                        
                         @Override
                         public void doNotAllow(@NotNull PiracyCheckerError error,
                                                @org.jetbrains.annotations.Nullable PirateApp app) {
@@ -190,10 +190,10 @@ public void doNotAllow(@NotNull PiracyCheckerError error,
                     .start();
             }
         });
-
+        
         signal.await(30, TimeUnit.SECONDS);
     }
-
+    
     @Test
     public void verifyDeepPirate_ALLOW() throws Throwable {
         final CountDownLatch signal = new CountDownLatch(1);
@@ -201,14 +201,14 @@ public void verifyDeepPirate_ALLOW() throws Throwable {
             @Override
             public void run() {
                 new PiracyChecker(InstrumentationRegistry.getTargetContext())
-                    .enableFoldersCheck(true)
+                    .enableFoldersCheck()
                     .callback(new PiracyCheckerCallback() {
                         @Override
                         public void allow() {
                             assertTrue("PiracyChecker OK", true);
                             signal.countDown();
                         }
-
+                        
                         @Override
                         public void doNotAllow(@NotNull PiracyCheckerError error,
                                                @org.jetbrains.annotations.Nullable PirateApp app) {
@@ -219,10 +219,10 @@ public void doNotAllow(@NotNull PiracyCheckerError error,
                     .start();
             }
         });
-
+        
         signal.await(30, TimeUnit.SECONDS);
     }
-
+    
     @Test
     public void verifyDebug_DONTALLOW() throws Throwable {
         final CountDownLatch signal = new CountDownLatch(1);
@@ -230,7 +230,7 @@ public void verifyDebug_DONTALLOW() throws Throwable {
             @Override
             public void run() {
                 new PiracyChecker(InstrumentationRegistry.getTargetContext())
-                    .enableDebugCheck(true)
+                    .enableDebugCheck()
                     .callback(new PiracyCheckerCallback() {
                         @Override
                         public void allow() {
@@ -238,7 +238,7 @@ public void allow() {
                                        false);
                             signal.countDown();
                         }
-
+                        
                         @Override
                         public void doNotAllow(@NotNull PiracyCheckerError error,
                                                @org.jetbrains.annotations.Nullable PirateApp app) {
@@ -253,10 +253,10 @@ public void doNotAllow(@NotNull PiracyCheckerError error,
                     .start();
             }
         });
-
+        
         signal.await(30, TimeUnit.SECONDS);
     }
-
+    
     @Test
     public void verifyEmulator_DONTALLOW() throws Throwable {
         final CountDownLatch signal = new CountDownLatch(1);
@@ -272,7 +272,7 @@ public void allow() {
                                        false);
                             signal.countDown();
                         }
-
+                        
                         @Override
                         public void doNotAllow(@NotNull PiracyCheckerError error,
                                                @org.jetbrains.annotations.Nullable PirateApp app) {
@@ -287,10 +287,10 @@ public void doNotAllow(@NotNull PiracyCheckerError error,
                     .start();
             }
         });
-
+        
         signal.await(30, TimeUnit.SECONDS);
     }
-
+    
     @Test
     public void verifyEmulatorDeep_DONTALLOW() throws Throwable {
         final CountDownLatch signal = new CountDownLatch(1);
@@ -306,7 +306,7 @@ public void allow() {
                                        false);
                             signal.countDown();
                         }
-
+                        
                         @Override
                         public void doNotAllow(@NotNull PiracyCheckerError error,
                                                @org.jetbrains.annotations.Nullable PirateApp app) {
@@ -321,7 +321,7 @@ public void doNotAllow(@NotNull PiracyCheckerError error,
                     .start();
             }
         });
-
+        
         signal.await(30, TimeUnit.SECONDS);
     }
 }
\ No newline at end of file
diff --git a/app/src/androidTest/java/com/github/javiersantos/piracychecker/UnauthorizedAppTest.java b/app/src/androidTest/java/com/github/javiersantos/piracychecker/UnauthorizedAppTest.java
index ce5a005..237a974 100644
--- a/app/src/androidTest/java/com/github/javiersantos/piracychecker/UnauthorizedAppTest.java
+++ b/app/src/androidTest/java/com/github/javiersantos/piracychecker/UnauthorizedAppTest.java
@@ -1,9 +1,5 @@
 package com.github.javiersantos.piracychecker;
 
-import android.support.test.InstrumentationRegistry;
-import android.support.test.rule.ActivityTestRule;
-import android.support.test.runner.AndroidJUnit4;
-
 import com.github.javiersantos.piracychecker.callbacks.PiracyCheckerCallback;
 import com.github.javiersantos.piracychecker.demo.MainActivity;
 import com.github.javiersantos.piracychecker.enums.PiracyCheckerError;
@@ -17,6 +13,10 @@
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
+import androidx.test.InstrumentationRegistry;
+import androidx.test.rule.ActivityTestRule;
+import androidx.test.runner.AndroidJUnit4;
+
 import static org.junit.Assert.assertTrue;
 
 /**
@@ -25,11 +25,11 @@
  */
 @RunWith(AndroidJUnit4.class)
 public class UnauthorizedAppTest {
-
+    
     @Rule
     public final ActivityTestRule<MainActivity> uiThreadTestRule =
         new ActivityTestRule<>(MainActivity.class);
-
+    
     @Test
     public void verifyUnauthorizedCustomApp_ALLOW() throws Throwable {
         final CountDownLatch signal = new CountDownLatch(1);
@@ -46,7 +46,7 @@ public void allow() {
                             assertTrue("PiracyChecker OK", true);
                             signal.countDown();
                         }
-
+                        
                         @Override
                         public void doNotAllow(@NotNull PiracyCheckerError error,
                                                @org.jetbrains.annotations.Nullable PirateApp app) {
@@ -58,10 +58,10 @@ public void doNotAllow(@NotNull PiracyCheckerError error,
                     .start();
             }
         });
-
+        
         signal.await(30, TimeUnit.SECONDS);
     }
-
+    
     @Test
     public void verifyUnauthorizedCustomApp_DONTALLOW() throws Throwable {
         final CountDownLatch signal = new CountDownLatch(1);
@@ -80,7 +80,7 @@ public void allow() {
                                 false);
                             signal.countDown();
                         }
-
+                        
                         @Override
                         public void doNotAllow(@NotNull PiracyCheckerError error,
                                                @org.jetbrains.annotations.Nullable PirateApp app) {
@@ -95,10 +95,10 @@ public void doNotAllow(@NotNull PiracyCheckerError error,
                     .start();
             }
         });
-
+        
         signal.await(30, TimeUnit.SECONDS);
     }
-
+    
     @Test
     public void verifyUnauthorizedApps_DONTALLOW() throws Throwable {
         final CountDownLatch signal = new CountDownLatch(1);
@@ -106,7 +106,7 @@ public void verifyUnauthorizedApps_DONTALLOW() throws Throwable {
             @Override
             public void run() {
                 new PiracyChecker(InstrumentationRegistry.getTargetContext())
-                    .enableUnauthorizedAppsCheck(true)
+                    .enableUnauthorizedAppsCheck()
                     .blockIfUnauthorizedAppUninstalled("piracychecker_preferences",
                                                        "app_unauthorized")
                     .callback(new PiracyCheckerCallback() {
@@ -117,7 +117,7 @@ public void allow() {
                                 false);
                             signal.countDown();
                         }
-
+                        
                         @Override
                         public void doNotAllow(@NotNull PiracyCheckerError error,
                                                @org.jetbrains.annotations.Nullable PirateApp app) {
@@ -132,8 +132,8 @@ public void doNotAllow(@NotNull PiracyCheckerError error,
                     .start();
             }
         });
-
+        
         signal.await(30, TimeUnit.SECONDS);
     }
-
+    
 }
diff --git a/app/src/androidTest/java/com/github/javiersantos/piracychecker/UnauthorizedAppUninstalledTest.java b/app/src/androidTest/java/com/github/javiersantos/piracychecker/UnauthorizedAppUninstalledTest.java
index 266d9c4..6b712c0 100644
--- a/app/src/androidTest/java/com/github/javiersantos/piracychecker/UnauthorizedAppUninstalledTest.java
+++ b/app/src/androidTest/java/com/github/javiersantos/piracychecker/UnauthorizedAppUninstalledTest.java
@@ -1,9 +1,5 @@
 package com.github.javiersantos.piracychecker;
 
-import android.support.test.InstrumentationRegistry;
-import android.support.test.rule.ActivityTestRule;
-import android.support.test.runner.AndroidJUnit4;
-
 import com.github.javiersantos.piracychecker.callbacks.PiracyCheckerCallback;
 import com.github.javiersantos.piracychecker.demo.MainActivity;
 import com.github.javiersantos.piracychecker.enums.PiracyCheckerError;
@@ -17,6 +13,10 @@
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
+import androidx.test.InstrumentationRegistry;
+import androidx.test.rule.ActivityTestRule;
+import androidx.test.runner.AndroidJUnit4;
+
 import static org.junit.Assert.assertTrue;
 
 /**
@@ -25,11 +25,11 @@
  */
 @RunWith(AndroidJUnit4.class)
 public class UnauthorizedAppUninstalledTest {
-
+    
     @Rule
     public final ActivityTestRule<MainActivity> uiThreadTestRule =
         new ActivityTestRule<>(MainActivity.class);
-
+    
     @Test
     public void verifyBlockUnauthorizedApps_DONTALLOW() throws Throwable {
         final CountDownLatch signal = new CountDownLatch(1);
@@ -37,7 +37,7 @@ public void verifyBlockUnauthorizedApps_DONTALLOW() throws Throwable {
             @Override
             public void run() {
                 new PiracyChecker(InstrumentationRegistry.getTargetContext())
-                    .enableUnauthorizedAppsCheck(true)
+                    .enableUnauthorizedAppsCheck()
                     .blockIfUnauthorizedAppUninstalled("piracychecker_preferences",
                                                        "app_unauthorized")
                     .callback(new PiracyCheckerCallback() {
@@ -49,7 +49,7 @@ public void allow() {
                                 false);
                             signal.countDown();
                         }
-
+                        
                         @Override
                         public void doNotAllow(@NotNull PiracyCheckerError error,
                                                @org.jetbrains.annotations.Nullable PirateApp app) {
@@ -64,10 +64,10 @@ public void doNotAllow(@NotNull PiracyCheckerError error,
                     .start();
             }
         });
-
+        
         signal.await(30, TimeUnit.SECONDS);
     }
-
+    
     @Test
     public void verifyUnauthorizedApps_ALLOW() throws Throwable {
         final CountDownLatch signal = new CountDownLatch(1);
@@ -75,14 +75,14 @@ public void verifyUnauthorizedApps_ALLOW() throws Throwable {
             @Override
             public void run() {
                 new PiracyChecker(InstrumentationRegistry.getTargetContext())
-                    .enableUnauthorizedAppsCheck(true)
+                    .enableUnauthorizedAppsCheck()
                     .callback(new PiracyCheckerCallback() {
                         @Override
                         public void allow() {
                             assertTrue("PiracyChecker OK", true);
                             signal.countDown();
                         }
-
+                        
                         @Override
                         public void doNotAllow(@NotNull PiracyCheckerError error,
                                                @org.jetbrains.annotations.Nullable PirateApp app) {
diff --git a/app/src/main/java/com/github/javiersantos/piracychecker/demo/KotlinActivity.kt b/app/src/main/java/com/github/javiersantos/piracychecker/demo/KotlinActivity.kt
index 2fe5458..3e94657 100644
--- a/app/src/main/java/com/github/javiersantos/piracychecker/demo/KotlinActivity.kt
+++ b/app/src/main/java/com/github/javiersantos/piracychecker/demo/KotlinActivity.kt
@@ -3,9 +3,9 @@ package com.github.javiersantos.piracychecker.demo
 import android.content.Intent
 import android.net.Uri
 import android.os.Bundle
-import android.support.v7.app.AlertDialog
-import android.support.v7.app.AppCompatActivity
-import android.support.v7.widget.Toolbar
+import androidx.appcompat.app.AlertDialog
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.widget.Toolbar
 import android.util.Log
 import android.widget.RadioGroup
 import com.github.javiersantos.piracychecker.allow
@@ -115,7 +115,7 @@ class KotlinActivity : AppCompatActivity() {
     fun verifyEmulator() {
         piracyChecker {
             display(piracyCheckerDisplay)
-            enableEmulatorCheck()
+            enableEmulatorCheck(false)
         }.start()
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/github/javiersantos/piracychecker/demo/MainActivity.java b/app/src/main/java/com/github/javiersantos/piracychecker/demo/MainActivity.java
index d90b1d4..f8cdddd 100644
--- a/app/src/main/java/com/github/javiersantos/piracychecker/demo/MainActivity.java
+++ b/app/src/main/java/com/github/javiersantos/piracychecker/demo/MainActivity.java
@@ -3,10 +3,10 @@
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
-import android.support.annotation.IdRes;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
+import androidx.annotation.IdRes;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
 import android.util.Log;
 import android.view.View;
 import android.widget.RadioGroup;
@@ -78,7 +78,7 @@ public void verifyInstallerId(View view) {
     public void verifyUnauthorizedApps(View view) {
         new PiracyChecker(this)
             .display(piracyCheckerDisplay)
-            .enableUnauthorizedAppsCheck(true)
+            .enableUnauthorizedAppsCheck()
             //.blockIfUnauthorizedAppUninstalled("license_checker", "block")
             .start();
     }
@@ -86,21 +86,21 @@ public void verifyUnauthorizedApps(View view) {
     public void verifyStores(View view) {
         new PiracyChecker(this)
             .display(piracyCheckerDisplay)
-            .enableStoresCheck(true)
+            .enableStoresCheck()
             .start();
     }
 
     public void verifyDebug(View view) {
         new PiracyChecker(this)
             .display(piracyCheckerDisplay)
-            .enableDebugCheck(true)
+            .enableDebugCheck()
             .start();
     }
 
     public void verifyEmulator(View view) {
         new PiracyChecker(this)
             .display(piracyCheckerDisplay)
-            .enableEmulatorCheck(true)
+            .enableEmulatorCheck(false)
             .start();
     }
 }
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index f0cca3c..f1a846d 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.CoordinatorLayout
+<androidx.coordinatorlayout.widget.CoordinatorLayout
         xmlns:android="http://schemas.android.com/apk/res/android"
         xmlns:app="http://schemas.android.com/apk/res-auto"
         xmlns:tools="http://schemas.android.com/tools"
@@ -8,14 +8,14 @@
         android:fitsSystemWindows="true"
         tools:context="com.github.javiersantos.piracychecker.demo.MainActivity">
 
-    <android.support.design.widget.AppBarLayout
+    <com.google.android.material.appbar.AppBarLayout
             android:id="@+id/app_bar"
             android:layout_width="match_parent"
             android:layout_height="250dp"
             android:fitsSystemWindows="true"
             android:theme="@style/AppTheme.AppBarOverlay">
 
-        <android.support.design.widget.CollapsingToolbarLayout
+        <com.google.android.material.appbar.CollapsingToolbarLayout
                 android:id="@+id/toolbar_layout"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
@@ -50,19 +50,19 @@
                     android:textSize="@dimen/abc_text_size_subhead_material"
                     app:layout_collapseMode="parallax"/>
 
-            <android.support.v7.widget.Toolbar
+            <androidx.appcompat.widget.Toolbar
                     android:id="@+id/toolbar"
                     android:layout_width="match_parent"
                     android:layout_height="?attr/actionBarSize"
                     app:layout_collapseMode="pin"
                     app:popupTheme="@style/AppTheme.PopupOverlay"/>
 
-        </android.support.design.widget.CollapsingToolbarLayout>
-    </android.support.design.widget.AppBarLayout>
+        </com.google.android.material.appbar.CollapsingToolbarLayout>
+    </com.google.android.material.appbar.AppBarLayout>
 
     <include layout="@layout/content_main"/>
 
-    <android.support.design.widget.FloatingActionButton
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
             android:onClick="toGithub"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
@@ -71,4 +71,4 @@
             app:layout_anchor="@id/app_bar"
             app:layout_anchorGravity="bottom|end"/>
 
-</android.support.design.widget.CoordinatorLayout>
\ No newline at end of file
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/content_main.xml b/app/src/main/res/layout/content_main.xml
index 83af7b5..edaae7b 100644
--- a/app/src/main/res/layout/content_main.xml
+++ b/app/src/main/res/layout/content_main.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.v4.widget.NestedScrollView
+<androidx.core.widget.NestedScrollView
         xmlns:android="http://schemas.android.com/apk/res/android"
         xmlns:app="http://schemas.android.com/apk/res-auto"
         xmlns:tools="http://schemas.android.com/tools"
@@ -48,7 +48,7 @@
 
         </RadioGroup>
 
-        <android.support.v7.widget.CardView
+        <androidx.cardview.widget.CardView
                 android:onClick="verifySignature"
                 android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
@@ -69,9 +69,9 @@
                         android:textAllCaps="true"/>
             </LinearLayout>
 
-        </android.support.v7.widget.CardView>
+        </androidx.cardview.widget.CardView>
 
-        <android.support.v7.widget.CardView
+        <androidx.cardview.widget.CardView
                 android:onClick="verifyInstallerId"
                 android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
@@ -92,9 +92,9 @@
                         android:textAllCaps="true"/>
             </LinearLayout>
 
-        </android.support.v7.widget.CardView>
+        </androidx.cardview.widget.CardView>
 
-        <android.support.v7.widget.CardView
+        <androidx.cardview.widget.CardView
                 android:onClick="verifyUnauthorizedApps"
                 android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
@@ -115,9 +115,9 @@
                         android:textAllCaps="true"/>
             </LinearLayout>
 
-        </android.support.v7.widget.CardView>
+        </androidx.cardview.widget.CardView>
 
-        <android.support.v7.widget.CardView
+        <androidx.cardview.widget.CardView
                 android:onClick="verifyStores"
                 android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
@@ -138,9 +138,9 @@
                         android:textAllCaps="true"/>
             </LinearLayout>
 
-        </android.support.v7.widget.CardView>
+        </androidx.cardview.widget.CardView>
 
-        <android.support.v7.widget.CardView
+        <androidx.cardview.widget.CardView
                 android:onClick="verifyDebug"
                 android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
@@ -161,9 +161,9 @@
                         android:textAllCaps="true"/>
             </LinearLayout>
 
-        </android.support.v7.widget.CardView>
+        </androidx.cardview.widget.CardView>
 
-        <android.support.v7.widget.CardView
+        <androidx.cardview.widget.CardView
                 android:onClick="verifyEmulator"
                 android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
@@ -184,7 +184,7 @@
                         android:textAllCaps="true"/>
             </LinearLayout>
 
-        </android.support.v7.widget.CardView>
+        </androidx.cardview.widget.CardView>
 
         <TextView
                 android:layout_width="wrap_content"
@@ -194,7 +194,7 @@
                 android:text="@string/section_utils"
                 android:textSize="16sp"/>
 
-        <android.support.v7.widget.CardView
+        <androidx.cardview.widget.CardView
                 android:onClick="readSignature"
                 android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
@@ -215,8 +215,8 @@
                         android:textAllCaps="true"/>
             </LinearLayout>
 
-        </android.support.v7.widget.CardView>
+        </androidx.cardview.widget.CardView>
 
     </LinearLayout>
 
-</android.support.v4.widget.NestedScrollView>
\ No newline at end of file
+</androidx.core.widget.NestedScrollView>
\ No newline at end of file
diff --git a/app/src/main/res/values-v21/styles.xml b/app/src/main/res/values-v21/styles.xml
index dbbdd40..7b61783 100644
--- a/app/src/main/res/values-v21/styles.xml
+++ b/app/src/main/res/values-v21/styles.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
 
     <style name="AppTheme.NoActionBar">
diff --git a/app/src/main/res/values/dimens.xml b/app/src/main/res/values/dimens.xml
index da62b5f..48ae705 100644
--- a/app/src/main/res/values/dimens.xml
+++ b/app/src/main/res/values/dimens.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <dimen name="app_bar_height">180dp</dimen>
     <dimen name="fab_margin">16dp</dimen>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index bb87144..b6a2613 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">PiracyChecker Library (Demo)</string>
     <string name="app_description">An Android library that prevents your app from being pirated / cracked using Google Play Licensing (LVL), signing certificate protection and more.</string>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index e36b09b..3edd0b3 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
 
     <!-- Base application theme. -->
diff --git a/build.gradle b/build.gradle
index 3a2705f..2e686f2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,14 +1,14 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.2.71'
+    ext.kotlin_version = '1.3.0'
     repositories {
-        google()
         jcenter()
+        google()
         maven { url 'https://jitpack.io' }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.0'
+        classpath 'com.android.tools.build:gradle:3.2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
 
@@ -19,8 +19,8 @@ buildscript {
 
 allprojects {
     repositories {
-        google()
         jcenter()
+        google()
         maven { url 'https://jitpack.io' }
     }
 }
diff --git a/gradle.properties b/gradle.properties
index 1d3591c..915f0e6 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -15,4 +15,6 @@
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
-# org.gradle.parallel=true
\ No newline at end of file
+# org.gradle.parallel=true
+android.enableJetifier=true
+android.useAndroidX=true
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 137cbb5..f9d8c27 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.8.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip
diff --git a/library/build.gradle b/library/build.gradle
index 218297c..023a61a 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -1,7 +1,7 @@
 apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
 apply plugin: 'com.github.dcendents.android-maven'
-group='com.github.javiersantos'
+group = 'com.github.javiersantos'
 
 android {
     compileSdkVersion 28
@@ -10,8 +10,8 @@ android {
     defaultConfig {
         minSdkVersion 14
         targetSdkVersion 28
-        versionCode 124
-        versionName "1.2.4"
+        versionCode 125
+        versionName "1.2.5"
         consumerProguardFiles 'proguard-rules.pro'
     }
     buildTypes {
@@ -25,7 +25,8 @@ android {
 
 dependencies {
     api fileTree(dir: 'libs', include: ['*.jar'])
-    api 'com.android.support:appcompat-v7:28.0.0'
+    implementation 'androidx.appcompat:appcompat:1.0.0'
+    implementation 'com.google.android.material:material:1.0.0'
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
 }
 
diff --git a/library/src/main/AndroidManifest.xml b/library/src/main/AndroidManifest.xml
index 0701f88..e4d5ba0 100644
--- a/library/src/main/AndroidManifest.xml
+++ b/library/src/main/AndroidManifest.xml
@@ -1,7 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="com.github.javiersantos.piracychecker">
 
-    <uses-permission android:name="com.android.vending.CHECK_LICENSE"/>
+    <uses-permission android:name="com.android.vending.CHECK_LICENSE" />
 
     <application>
         <activity
diff --git a/library/src/main/java/com/github/javiersantos/piracychecker/Extensions.kt b/library/src/main/java/com/github/javiersantos/piracychecker/Extensions.kt
index 806d603..1202cad 100644
--- a/library/src/main/java/com/github/javiersantos/piracychecker/Extensions.kt
+++ b/library/src/main/java/com/github/javiersantos/piracychecker/Extensions.kt
@@ -1,7 +1,7 @@
 package com.github.javiersantos.piracychecker
 
 import android.content.Context
-import android.support.v4.app.Fragment
+import androidx.fragment.app.Fragment
 import com.github.javiersantos.piracychecker.callbacks.AllowCallback
 import com.github.javiersantos.piracychecker.callbacks.DoNotAllowCallback
 import com.github.javiersantos.piracychecker.callbacks.OnErrorCallback
@@ -16,7 +16,7 @@ fun Context.piracyChecker(builder: PiracyChecker.() -> Unit): PiracyChecker {
 }
 
 fun Fragment.piracyChecker(builder: PiracyChecker.() -> Unit): PiracyChecker =
-    context!!.piracyChecker(builder)
+    activity?.piracyChecker(builder) ?: context!!.piracyChecker(builder)
 
 inline fun PiracyChecker.allow(crossinline allow: () -> Unit = {}) = apply {
     allowCallback(object : AllowCallback {
diff --git a/library/src/main/java/com/github/javiersantos/piracychecker/PiracyChecker.kt b/library/src/main/java/com/github/javiersantos/piracychecker/PiracyChecker.kt
index 0e704b1..3dc861c 100644
--- a/library/src/main/java/com/github/javiersantos/piracychecker/PiracyChecker.kt
+++ b/library/src/main/java/com/github/javiersantos/piracychecker/PiracyChecker.kt
@@ -6,10 +6,10 @@ import android.content.Context
 import android.content.Intent
 import android.content.SharedPreferences
 import android.provider.Settings
-import android.support.annotation.ColorRes
-import android.support.annotation.LayoutRes
-import android.support.annotation.StringRes
 import android.util.Log
+import androidx.annotation.ColorRes
+import androidx.annotation.LayoutRes
+import androidx.annotation.StringRes
 import com.github.javiersantos.licensing.AESObfuscator
 import com.github.javiersantos.licensing.LibraryChecker
 import com.github.javiersantos.licensing.LibraryCheckerCallback
@@ -126,8 +126,8 @@ class PiracyChecker(
         return this
     }
     
-    fun enableUnauthorizedAppsCheck(enable: Boolean = true): PiracyChecker {
-        this.enableUnauthorizedAppsCheck = enable
+    fun enableUnauthorizedAppsCheck(): PiracyChecker {
+        this.enableUnauthorizedAppsCheck = true
         return this
     }
     
@@ -151,29 +151,29 @@ class PiracyChecker(
         return this
     }
     
-    fun enableStoresCheck(enable: Boolean = true): PiracyChecker {
-        this.enableStoresCheck = enable
+    fun enableStoresCheck(): PiracyChecker {
+        this.enableStoresCheck = true
         return this
     }
     
-    fun enableDebugCheck(enable: Boolean = true): PiracyChecker {
-        this.enableDebugCheck = enable
+    fun enableDebugCheck(): PiracyChecker {
+        this.enableDebugCheck = true
         return this
     }
     
-    fun enableAPKCheck(enable: Boolean = true): PiracyChecker {
-        this.enableAPKCheck = enable
+    fun enableAPKCheck(): PiracyChecker {
+        this.enableAPKCheck = true
         return this
     }
     
-    fun enableEmulatorCheck(deepCheck: Boolean = true): PiracyChecker {
+    fun enableEmulatorCheck(deepCheck: Boolean): PiracyChecker {
         this.enableEmulatorCheck = true
         this.enableDeepEmulatorCheck = deepCheck
         return this
     }
     
-    fun enableFoldersCheck(foldersCheck: Boolean = true): PiracyChecker {
-        this.enableFoldersCheck = foldersCheck
+    fun enableFoldersCheck(): PiracyChecker {
+        this.enableFoldersCheck = true
         return this
     }
     
@@ -212,13 +212,11 @@ class PiracyChecker(
             this.preferences = preferences
         } else {
             try {
-                this.preferences = (context as Activity).getPreferences(Context.MODE_PRIVATE)
+                this.preferences = (context as? Activity)?.getPreferences(Context.MODE_PRIVATE)
             } catch (e: Exception) {
-                this.preferences = context?.getSharedPreferences(
-                    LIBRARY_PREFERENCES_NAME,
-                    Context.MODE_PRIVATE)
+                this.preferences =
+                    context?.getSharedPreferences(LIBRARY_PREFERENCES_NAME, Context.MODE_PRIVATE)
             }
-            
         }
     }
     
@@ -227,13 +225,11 @@ class PiracyChecker(
             this.preferences = context?.getSharedPreferences(preferencesName, Context.MODE_PRIVATE)
         } else {
             try {
-                this.preferences = (context as Activity).getPreferences(Context.MODE_PRIVATE)
+                this.preferences = (context as? Activity)?.getPreferences(Context.MODE_PRIVATE)
             } catch (e: Exception) {
-                this.preferences = context?.getSharedPreferences(
-                    LIBRARY_PREFERENCES_NAME,
-                    Context.MODE_PRIVATE)
+                this.preferences =
+                    context?.getSharedPreferences(LIBRARY_PREFERENCES_NAME, Context.MODE_PRIVATE)
             }
-            
         }
     }
     
@@ -337,9 +333,7 @@ class PiracyChecker(
                             .putExtra("withLightStatusBar", withLightStatusBar)
                             .putExtra("layoutXML", layoutXML)
                         context?.startActivity(intent)
-                        if (context is Activity) {
-                            (context as Activity).finish()
-                        }
+                        (context as? Activity)?.finish()
                         destroy()
                     }
                 }
@@ -411,18 +405,17 @@ class PiracyChecker(
             extraApps)
         if (possibleSuccess) {
             if (enableDebugCheck && (context?.isDebug() == true)) {
-                if (preferences != null && saveToSharedPreferences)
+                if (saveToSharedPreferences)
                     preferences?.edit()?.putBoolean(preferenceSaveResult, false)?.apply()
                 doNotAllowCallback?.doNotAllow(PiracyCheckerError.USING_DEBUG_APP, null)
-            } else if (enableEmulatorCheck && isInEmulator(
-                    enableDeepEmulatorCheck)) {
-                if (preferences != null && saveToSharedPreferences)
+            } else if (enableEmulatorCheck && isInEmulator(enableDeepEmulatorCheck)) {
+                if (saveToSharedPreferences)
                     preferences?.edit()?.putBoolean(preferenceSaveResult, false)?.apply()
                 doNotAllowCallback?.doNotAllow(PiracyCheckerError.USING_APP_IN_EMULATOR, null)
             } else if (app != null) {
-                if (preferences != null && saveToSharedPreferences)
+                if (saveToSharedPreferences)
                     preferences?.edit()?.putBoolean(preferenceSaveResult, false)?.apply()
-                if (preferences != null && blockUnauthorized && app.type == AppType.PIRATE)
+                if (blockUnauthorized && app.type == AppType.PIRATE)
                     preferences?.edit()?.putBoolean(preferenceBlockUnauthorized, true)?.apply()
                 doNotAllowCallback?.doNotAllow(
                     if (app.type == AppType.STORE)
@@ -430,15 +423,15 @@ class PiracyChecker(
                     else
                         PiracyCheckerError.PIRATE_APP_INSTALLED, app)
             } else {
-                if (preferences != null && saveToSharedPreferences)
+                if (saveToSharedPreferences)
                     preferences?.edit()?.putBoolean(preferenceSaveResult, true)?.apply()
                 allowCallback?.allow()
             }
         } else {
             if (app != null) {
-                if (preferences != null && saveToSharedPreferences)
+                if (saveToSharedPreferences)
                     preferences?.edit()?.putBoolean(preferenceSaveResult, false)?.apply()
-                if (preferences != null && blockUnauthorized && app.type == AppType.PIRATE)
+                if (blockUnauthorized && app.type == AppType.PIRATE)
                     preferences?.edit()?.putBoolean(preferenceBlockUnauthorized, true)?.apply()
                 doNotAllowCallback?.doNotAllow(
                     if (app.type == AppType.STORE)
@@ -446,7 +439,7 @@ class PiracyChecker(
                     else
                         PiracyCheckerError.PIRATE_APP_INSTALLED, app)
             } else {
-                if (preferences != null && saveToSharedPreferences)
+                if (saveToSharedPreferences)
                     preferences?.edit()?.putBoolean(preferenceSaveResult, false)?.apply()
                 doNotAllowCallback?.doNotAllow(PiracyCheckerError.NOT_LICENSED, null)
             }
diff --git a/library/src/main/java/com/github/javiersantos/piracychecker/PiracyCheckerDialog.kt b/library/src/main/java/com/github/javiersantos/piracychecker/PiracyCheckerDialog.kt
index d4ac958..6abd61c 100644
--- a/library/src/main/java/com/github/javiersantos/piracychecker/PiracyCheckerDialog.kt
+++ b/library/src/main/java/com/github/javiersantos/piracychecker/PiracyCheckerDialog.kt
@@ -1,22 +1,23 @@
 package com.github.javiersantos.piracychecker
 
-import android.app.Activity
 import android.app.Dialog
-import android.app.DialogFragment
 import android.content.Context
 import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import androidx.fragment.app.DialogFragment
 import com.github.javiersantos.piracychecker.utils.buildUnlicensedDialog
 
 class PiracyCheckerDialog : DialogFragment() {
     fun show(context: Context) {
-        (context as? Activity)?.let {
-            pcDialog?.show(it.fragmentManager, "[LICENSE_DIALOG]")
+        (context as? AppCompatActivity)?.let {
+            pcDialog?.show(it.supportFragmentManager, "[LICENSE_DIALOG]")
         }
     }
     
-    override fun onCreateDialog(savedInstanceState: Bundle): Dialog? {
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+        super.onCreateDialog(savedInstanceState)
         isCancelable = false
-        return activity.buildUnlicensedDialog(title.orEmpty(), content.orEmpty())
+        return activity?.buildUnlicensedDialog(title.orEmpty(), content.orEmpty())!!
     }
     
     companion object {
diff --git a/library/src/main/java/com/github/javiersantos/piracychecker/activities/LicenseActivity.kt b/library/src/main/java/com/github/javiersantos/piracychecker/activities/LicenseActivity.kt
index 5214d6d..6838f13 100644
--- a/library/src/main/java/com/github/javiersantos/piracychecker/activities/LicenseActivity.kt
+++ b/library/src/main/java/com/github/javiersantos/piracychecker/activities/LicenseActivity.kt
@@ -3,16 +3,15 @@ package com.github.javiersantos.piracychecker.activities
 import android.annotation.SuppressLint
 import android.os.Build
 import android.os.Bundle
-import android.support.annotation.ColorRes
-import android.support.annotation.LayoutRes
-import android.support.v4.content.ContextCompat
-import android.support.v7.app.AppCompatActivity
-import android.support.v7.widget.Toolbar
 import android.view.LayoutInflater
 import android.view.View
 import android.widget.FrameLayout
 import android.widget.TextView
-
+import androidx.annotation.ColorRes
+import androidx.annotation.LayoutRes
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.widget.Toolbar
+import androidx.core.content.ContextCompat
 import com.github.javiersantos.piracychecker.R
 
 class LicenseActivity : AppCompatActivity() {
@@ -34,15 +33,15 @@ class LicenseActivity : AppCompatActivity() {
     }
     
     private fun getIntentData() {
-        if (intent != null) {
-            description = intent.getStringExtra("content")
-            colorPrimary = intent.getIntExtra(
-                "colorPrimary", ContextCompat.getColor(this, R.color.colorPrimary))
-            colorPrimaryDark = intent.getIntExtra(
-                "colorPrimaryDark", ContextCompat.getColor(this, R.color.colorPrimaryDark))
-            withLightStatusBar = intent.getBooleanExtra("withLightStatusBar", false)
-            layoutXML = intent.getIntExtra("layoutXML", -1)
-        }
+        description = intent?.getStringExtra("content") ?: ""
+        colorPrimary = intent?.getIntExtra(
+            "colorPrimary", ContextCompat.getColor(this, R.color.colorPrimary)) ?:
+            ContextCompat.getColor(this, R.color.colorPrimary)
+        colorPrimaryDark = intent?.getIntExtra(
+            "colorPrimaryDark", ContextCompat.getColor(this, R.color.colorPrimaryDark)) ?:
+            ContextCompat.getColor(this, R.color.colorPrimaryDark)
+        withLightStatusBar = intent?.getBooleanExtra("withLightStatusBar", false) ?: false
+        layoutXML = intent?.getIntExtra("layoutXML", -1) ?: -1
     }
     
     private fun setActivityStyle() {
@@ -60,18 +59,17 @@ class LicenseActivity : AppCompatActivity() {
     
     @SuppressLint("InflateParams")
     private fun setActivityData() {
-        val frameLayout = findViewById<View>(R.id.mainContainer) as FrameLayout
+        val frameLayout = findViewById<FrameLayout?>(R.id.mainContainer)
         
         val factory = LayoutInflater.from(this)
-        val inflateView: View
+        val inflateView: View?
         if (layoutXML == -1) {
             inflateView = factory.inflate(R.layout.activity_license_default, null)
             val activityDescription =
-                inflateView.findViewById<View>(R.id.piracy_checker_description) as TextView
-            activityDescription.text = description
-        } else
-            inflateView = factory.inflate(layoutXML, null)
+                inflateView.findViewById<TextView?>(R.id.piracy_checker_description)
+            activityDescription?.text = description
+        } else inflateView = factory.inflate(layoutXML, null)
         
-        frameLayout.addView(inflateView)
+        inflateView?.let { frameLayout?.addView(it) }
     }
 }
\ No newline at end of file
diff --git a/library/src/main/java/com/github/javiersantos/piracychecker/utils/LibraryUtils.kt b/library/src/main/java/com/github/javiersantos/piracychecker/utils/LibraryUtils.kt
index b20c304..2042ccf 100644
--- a/library/src/main/java/com/github/javiersantos/piracychecker/utils/LibraryUtils.kt
+++ b/library/src/main/java/com/github/javiersantos/piracychecker/utils/LibraryUtils.kt
@@ -11,10 +11,10 @@ import android.content.pm.PackageManager
 import android.opengl.GLES20
 import android.os.Build
 import android.os.Environment
-import android.support.v4.app.ActivityCompat
-import android.support.v4.app.Fragment
-import android.support.v7.app.AlertDialog
 import android.util.Base64
+import androidx.appcompat.app.AlertDialog
+import androidx.core.app.ActivityCompat
+import androidx.fragment.app.Fragment
 import com.github.javiersantos.piracychecker.R
 import com.github.javiersantos.piracychecker.enums.AppType
 import com.github.javiersantos.piracychecker.enums.InstallerID
@@ -44,8 +44,8 @@ internal fun Context.buildUnlicensedDialog(title: String, content: String): Aler
 val Context.apkSignature: String
     get() = currentSignature
 
-val Fragment.apkSignature: String
-    get() = context!!.apkSignature
+val Fragment.apkSignature: String?
+    get() = context?.apkSignature
 
 val Context.currentSignature: String
     @SuppressLint("PackageManagerGetSignatures")
@@ -172,93 +172,110 @@ internal fun Context.getPirateApp(
  *
  * Copyright (C) 2013, Vladislav Gingo Skoumal (http://www.skoumal.net)
  */
-internal fun isInEmulator(deepCheck: Boolean): Boolean {
+internal fun isInEmulator(deepCheck: Boolean = false): Boolean {
     var ratingCheckEmulator = 0
     
-    if (Build.PRODUCT.contains("sdk") ||
-        Build.PRODUCT.contains("Andy") ||
-        Build.PRODUCT.contains("ttVM_Hdragon") ||
-        Build.PRODUCT.contains("google_sdk") ||
-        Build.PRODUCT.contains("Droid4X") ||
-        Build.PRODUCT.contains("nox") ||
-        Build.PRODUCT.contains("sdk_x86") ||
-        Build.PRODUCT.contains("sdk_google") ||
-        Build.PRODUCT.contains("vbox86p")) {
+    val product = try {
+        Build.PRODUCT
+    } catch (e: Exception) {
+        ""
+    }
+    if (product.containsIgnoreCase("sdk") || product.containsIgnoreCase("Andy") ||
+        product.containsIgnoreCase("ttVM_Hdragon") || product.containsIgnoreCase("google_sdk") ||
+        product.containsIgnoreCase("Droid4X") || product.containsIgnoreCase("nox") ||
+        product.containsIgnoreCase("sdk_x86") || product.containsIgnoreCase("sdk_google") ||
+        product.containsIgnoreCase("vbox86p")) {
         ratingCheckEmulator++
     }
     
-    if (Build.MANUFACTURER == "unknown" ||
-        Build.MANUFACTURER == "Genymotion" ||
-        Build.MANUFACTURER.contains("Andy") ||
-        Build.MANUFACTURER.contains("MIT") ||
-        Build.MANUFACTURER.contains("nox") ||
-        Build.MANUFACTURER.contains("TiantianVM")) {
+    val manufacturer = try {
+        Build.MANUFACTURER
+    } catch (e: Exception) {
+        ""
+    }
+    if (manufacturer.equalsIgnoreCase("unknown") || manufacturer.equalsIgnoreCase("Genymotion") ||
+        manufacturer.containsIgnoreCase("Andy") || manufacturer.containsIgnoreCase("MIT") ||
+        manufacturer.containsIgnoreCase("nox") || manufacturer.containsIgnoreCase("TiantianVM")) {
         ratingCheckEmulator++
     }
     
-    if (Build.BRAND == "generic" ||
-        Build.BRAND == "generic_x86" ||
-        Build.BRAND == "TTVM" ||
-        Build.BRAND.contains("Andy")) {
+    val brand = try {
+        Build.BRAND
+    } catch (e: Exception) {
+        ""
+    }
+    if (brand.equalsIgnoreCase("generic") || brand.equalsIgnoreCase("generic_x86") ||
+        brand.equalsIgnoreCase("TTVM") || brand.containsIgnoreCase("Andy")) {
         ratingCheckEmulator++
     }
     
-    if (Build.DEVICE.contains("generic") ||
-        Build.DEVICE.contains("generic_x86") ||
-        Build.DEVICE.contains("Andy") ||
-        Build.DEVICE.contains("ttVM_Hdragon") ||
-        Build.DEVICE.contains("Droid4X") ||
-        Build.DEVICE.contains("nox") ||
-        Build.DEVICE.contains("generic_x86_64") ||
-        Build.DEVICE.contains("vbox86p")) {
+    val device = try {
+        Build.DEVICE
+    } catch (e: Exception) {
+        ""
+    }
+    if (device.containsIgnoreCase("generic") || device.containsIgnoreCase("generic_x86") ||
+        device.containsIgnoreCase("Andy") || device.containsIgnoreCase("ttVM_Hdragon") ||
+        device.containsIgnoreCase("Droid4X") || device.containsIgnoreCase("nox") ||
+        device.containsIgnoreCase("generic_x86_64") || device.containsIgnoreCase("vbox86p")) {
         ratingCheckEmulator++
     }
     
-    if (Build.MODEL == "sdk" ||
-        Build.MODEL == "google_sdk" ||
-        Build.MODEL.contains("Droid4X") ||
-        Build.MODEL.contains("TiantianVM") ||
-        Build.MODEL.contains("Andy") ||
-        Build.MODEL == "Android SDK built for x86_64" ||
-        Build.MODEL == "Android SDK built for x86") {
+    val model = try {
+        Build.MODEL
+    } catch (e: Exception) {
+        ""
+    }
+    if (model.equalsIgnoreCase("sdk") || model.equalsIgnoreCase("google_sdk") ||
+        model.containsIgnoreCase("Droid4X") || model.containsIgnoreCase("TiantianVM") ||
+        model.containsIgnoreCase("Andy") || model.equalsIgnoreCase(
+            "Android SDK built for x86_64") ||
+        model.equalsIgnoreCase("Android SDK built for x86")) {
         ratingCheckEmulator++
     }
     
-    if (Build.HARDWARE == "goldfish" ||
-        Build.HARDWARE == "vbox86" ||
-        Build.HARDWARE.contains("nox") ||
-        Build.HARDWARE.contains("ttVM_x86")) {
+    val hardware = try {
+        Build.HARDWARE
+    } catch (e: Exception) {
+        ""
+    }
+    if (hardware.equalsIgnoreCase("goldfish") || hardware.equalsIgnoreCase("vbox86") ||
+        hardware.containsIgnoreCase("nox") || hardware.containsIgnoreCase("ttVM_x86")) {
         ratingCheckEmulator++
     }
     
-    if (Build.FINGERPRINT.contains("generic") ||
-        Build.FINGERPRINT.contains("generic/sdk/generic") ||
-        Build.FINGERPRINT.contains("generic_x86/sdk_x86/generic_x86") ||
-        Build.FINGERPRINT.contains("Andy") ||
-        Build.FINGERPRINT.contains("ttVM_Hdragon") ||
-        Build.FINGERPRINT.contains("generic_x86_64") ||
-        Build.FINGERPRINT.contains("generic/google_sdk/generic") ||
-        Build.FINGERPRINT.contains("vbox86p") ||
-        Build.FINGERPRINT.contains("generic/vbox86p/vbox86p")) {
+    val fingerprint = try {
+        Build.FINGERPRINT
+    } catch (e: Exception) {
+        ""
+    }
+    if (fingerprint.containsIgnoreCase("generic") ||
+        fingerprint.containsIgnoreCase("generic/sdk/generic") ||
+        fingerprint.containsIgnoreCase("generic_x86/sdk_x86/generic_x86") ||
+        fingerprint.containsIgnoreCase("Andy") || fingerprint.containsIgnoreCase("ttVM_Hdragon") ||
+        fingerprint.containsIgnoreCase("generic_x86_64") ||
+        fingerprint.containsIgnoreCase("generic/google_sdk/generic") ||
+        fingerprint.containsIgnoreCase("vbox86p") ||
+        fingerprint.containsIgnoreCase("generic/vbox86p/vbox86p")) {
         ratingCheckEmulator++
     }
     
     if (deepCheck) {
         try {
-            val opengl = GLES20.glGetString(GLES20.GL_RENDERER)
-            if (opengl != null) {
-                if (opengl.contains("Bluestacks") || opengl.contains("Translator"))
+            GLES20.glGetString(GLES20.GL_RENDERER)?.let {
+                if (it.containsIgnoreCase("Bluestacks") || it.containsIgnoreCase("Translator"))
                     ratingCheckEmulator += 10
             }
-        } catch (ignored: Exception) {
+        } catch (e: Exception) {
         }
         
         try {
             val sharedFolder = File(
-                "${Environment.getExternalStorageDirectory()}${File.separatorChar}windows${File.separatorChar}BstSharedFolder")
+                "${Environment.getExternalStorageDirectory()}${File.separatorChar}windows" +
+                    "${File.separatorChar}BstSharedFolder")
             if (sharedFolder.exists())
                 ratingCheckEmulator += 10
-        } catch (ignored: Exception) {
+        } catch (e: Exception) {
         }
     }
     
@@ -538,4 +555,7 @@ private fun Context.shouldAskPermission(permission: String): Boolean {
         return permissionResult != PackageManager.PERMISSION_GRANTED
     }
     return false
-}
\ No newline at end of file
+}
+
+private fun String.equalsIgnoreCase(other: String) = this.equals(other, true)
+private fun String.containsIgnoreCase(other: String) = this.contains(other, true)
\ No newline at end of file
diff --git a/library/src/main/res/layout/activity_license.xml b/library/src/main/res/layout/activity_license.xml
index fa81196..6b15444 100644
--- a/library/src/main/res/layout/activity_license.xml
+++ b/library/src/main/res/layout/activity_license.xml
@@ -1,24 +1,30 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout
+<androidx.coordinatorlayout.widget.CoordinatorLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical">
 
-    <android.support.v7.widget.Toolbar
-        android:id="@+id/toolbar"
+    <com.google.android.material.appbar.AppBarLayout
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:minHeight="?attr/actionBarSize"
-        android:background="?attr/colorPrimary"
-        android:elevation="4dp"
-        app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
-        app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>
+        android:layout_height="?actionBarSize"
+        app:elevation="4dp">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
+            app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
+
+    </com.google.android.material.appbar.AppBarLayout>
 
     <FrameLayout
         android:id="@+id/mainContainer"
         android:layout_width="match_parent"
-        android:layout_height="match_parent" />
+        android:layout_height="match_parent"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior" />
 
-</LinearLayout>
\ No newline at end of file
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
\ No newline at end of file
diff --git a/library/src/main/res/values-es/strings.xml b/library/src/main/res/values-es/strings.xml
index f63c5c8..a50bf88 100644
--- a/library/src/main/res/values-es/strings.xml
+++ b/library/src/main/res/values-es/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_unlicensed">Licencia no válida</string>
     <string name="app_unlicensed_description">Ésta app no dispone de una licencia válida. Por favor, descárgala de una fuente segura.</string>
diff --git a/library/src/main/res/values-sk/strings.xml b/library/src/main/res/values-sk/strings.xml
index e045837..079d11e 100644
--- a/library/src/main/res/values-sk/strings.xml
+++ b/library/src/main/res/values-sk/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_unlicensed">Táto aplikácia nie je licencovaná</string>
     <string name="app_unlicensed_description">Táto aplikácia nie je licencovaná alebo platná. Prosím, stiahnite aplikáciu z dôveryhodného zdroja.</string>
diff --git a/library/src/main/res/values/strings.xml b/library/src/main/res/values/strings.xml
index e753fcd..83d1e90 100644
--- a/library/src/main/res/values/strings.xml
+++ b/library/src/main/res/values/strings.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources xmlns:tools="http://schemas.android.com/tools" tools:ignore="MissingTranslation">
     <string name="app_unlicensed">This app is not licensed</string>
     <string name="app_unlicensed_description">This application is not licensed nor valid. Please download the app from a trusted source.</string>
diff --git a/library/src/main/res/values/styles.xml b/library/src/main/res/values/styles.xml
index f844fcf..a6cfc9f 100644
--- a/library/src/main/res/values/styles.xml
+++ b/library/src/main/res/values/styles.xml
@@ -14,5 +14,4 @@
              which is used to tint widgets -->
         <item name="colorAccent">@color/colorAccent</item>
     </style>
-
 </resources>
\ No newline at end of file