Initial Commit for News App

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

app/.gitignore

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+/build

app/build.gradle

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+plugins {
+    id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+}
+
+android {
+    namespace 'com.rj.geeksnews'
+    compileSdk 33
+
+    defaultConfig {
+        applicationId "com.rj.geeksnews"
+        minSdk 24
+        targetSdk 33
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    buildFeatures{
+        viewBinding true
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.core:core-ktx:1.8.0'
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'com.google.android.material:material:1.5.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+
+    // retrofit & gson
+    implementation 'com.squareup.okhttp3:logging-interceptor:4.9.0'
+    implementation 'com.squareup.okhttp3:okhttp:4.9.0'
+    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
+    implementation 'com.google.code.gson:gson:2.8.7'
+
+    // Coroutine
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.1'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.5.1'
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.1"
+
+    //Glide
+    implementation "com.github.bumptech.glide:glide:4.11.0"
+    implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.6.1'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.6.0'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.6.0'
+    annotationProcessor 'com.github.bumptech.glide:compiler:4.11.0'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/rj/geeksnews/ExampleInstrumentedTest.kt

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+package com.rj.geeksnews
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.rj.geeksnews", appContext.packageName)
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.GeeksNews"
+        tools:targetApi="31">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/rj/geeksnews/MainActivity.kt

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+package com.rj.geeksnews
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.util.Log
+import androidx.lifecycle.ViewModelProvider
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.rj.geeksnews.adapter.CategoryAdapter
+import com.rj.geeksnews.adapter.NewsAdapter
+import com.rj.geeksnews.databinding.ActivityMainBinding
+import com.rj.geeksnews.model.CategoryResponse
+import java.text.SimpleDateFormat
+import java.util.Date
+
+class MainActivity : AppCompatActivity(),CategoryAdapter.CategoryClickListener {
+    private lateinit var mBinding:ActivityMainBinding
+    private var mViewModel:NewsViewModel?=null
+    private lateinit var newsAdapter: NewsAdapter
+    private lateinit var categoryAdapter: CategoryAdapter
+    private lateinit var categoryList:ArrayList<CategoryResponse>
+    private val SORT_BY:String="popularity"
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        mBinding = ActivityMainBinding.inflate(layoutInflater)
+        setContentView(mBinding.root)
+
+        categoryList = ArrayList()
+        newsAdapter = NewsAdapter(this)
+        categoryAdapter = CategoryAdapter(this,categoryList)
+
+        mViewModel = ViewModelProvider(this).get(NewsViewModel::class.java)
+
+        mBinding.categoryList.layoutManager = LinearLayoutManager(this,RecyclerView.HORIZONTAL,false)
+        mBinding.categoryList.adapter = categoryAdapter
+
+        mBinding.rvNewList.layoutManager = LinearLayoutManager(this,RecyclerView.HORIZONTAL,false)
+        mBinding.rvNewList.adapter = newsAdapter
+
+        setData()
+        setupObserver()
+        mViewModel?.getTopHeadline("in")
+
+    }
+    private fun setupObserver(){
+        mViewModel?.mTopHeadlinesData?.observe(this){
+           it.let {
+               mBinding.rvNewList.scrollToPosition(0)
+               newsAdapter.addItems(it.articles)
+           }
+        }
+        mViewModel?.mArticlesData?.observe(this){
+            it.let {
+                mBinding.rvNewList.scrollToPosition(0)
+                newsAdapter.addItems(it.articles)
+            }
+        }
+    }
+
+    override fun onTabChange(tabId: Int?) {
+        when(tabId){
+            1 ->mViewModel?.getTopHeadline("in")
+            2 ->mViewModel?.getArticles("business",getCurrentDate(),SORT_BY)
+            3 ->mViewModel?.getArticles("bitcoin",getCurrentDate(),SORT_BY)
+            4 ->mViewModel?.getArticles("android",getCurrentDate(),SORT_BY)
+            5 ->mViewModel?.getArticles("technology",getCurrentDate(),SORT_BY)
+        }
+    }
+
+    private fun getCurrentDate():String{
+        val sdf = SimpleDateFormat("yyyy-MM-dd")
+        return sdf.format(Date())
+
+    }
+    private fun setData(){
+        categoryList.add(CategoryResponse(1,"Top Heading",true))
+        categoryList.add(CategoryResponse(2,"Top Business"))
+        categoryList.add(CategoryResponse(3,"Bitcoin"))
+        categoryList.add(CategoryResponse(4,"Android"))
+        categoryList.add(CategoryResponse(5,"Technology"))
+
+
+    }
+}

app/src/main/java/com/rj/geeksnews/NewsRepo.kt

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+package com.rj.geeksnews
+
+import android.util.Log
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import com.rj.geeksnews.model.NewsResponseMain
+import com.rj.geeksnews.network.ApiInterface
+import com.rj.geeksnews.network.RetrofitClient
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+
+class NewsRepo:NewsRepoInterface {
+
+    private val mApiInterface:ApiInterface?=RetrofitClient.RetrofitInstance.getClient()?.create(ApiInterface::class.java)
+
+    private val _articlesData = MutableLiveData<NewsResponseMain>()
+    private val _topHeadlinesData = MutableLiveData<NewsResponseMain>()
+
+    fun getArticlesData():LiveData<NewsResponseMain> = _articlesData
+    fun getTopHeadlinesData():LiveData<NewsResponseMain> = _topHeadlinesData
+    var job:Job?=null
+    override suspend fun getArticles(category: String, date: String, sortBy: String) {
+     job= CoroutineScope(Dispatchers.IO).launch {
+         val  response = mApiInterface?.getArticles(category,"2023-07-06",date,sortBy)
+         withContext(Dispatchers.Main){
+             if (response?.status=="ok"){
+                 _articlesData.postValue(response!!)
+             }else{
+                 onError("Error: ${response?.status}")
+             }
+         }
+     }
+    }
+
+    override suspend fun getTopHeadline(country: String) {
+        CoroutineScope(Dispatchers.IO).launch {
+            val  response = mApiInterface?.getTopHeadline(country)
+            withContext(Dispatchers.Main){
+                if (response?.status=="ok"){
+                    _topHeadlinesData.postValue(response!!)
+                }else{
+                    onError("Error: ${response?.status}")
+                }
+            }
+        }
+    }
+
+    private fun onError(message:String){
+        Log.e("TAG","onError: $message")
+    }
+}

app/src/main/java/com/rj/geeksnews/NewsRepoInterface.kt

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+package com.rj.geeksnews
+
+interface NewsRepoInterface {
+
+    suspend fun getArticles(category:String,date:String,sortBy:String)
+    suspend fun getTopHeadline(country:String)
+}