feat: 增加 Activity 的利用 ViewModel 初始化一次的扩展功能

build.gradle

@@ -8,7 +8,7 @@ buildscript {
         maven { url 'https://jitpack.io' }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.2.1'
+        classpath 'com.android.tools.build:gradle:4.2.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

dependencies.gradle

@@ -9,9 +9,10 @@ ext.versions = [
 ext.libs = [
         kotlin_stdlib               : "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version",
         constraintlayout            : 'androidx.constraintlayout:constraintlayout:2.0.4',
-        activity                    : 'androidx.activity:activity:1.2.3',
+        activity                    : 'androidx.activity:activity:1.3.1',
         appcompat                   : 'androidx.appcompat:appcompat:1.3.0',
         android_core_ktx            : "androidx.core:core-ktx:1.6.0",
+        acrivity_ktx                : "androidx.activity:activity-ktx:1.3.1",
         fragment_ktx                : "androidx.fragment:fragment-ktx:1.3.5",
         recyclerview                : "androidx.recyclerview:recyclerview:1.2.0",
         rxandroid                   : "io.reactivex.rxjava2:rxandroid:2.1.1",

lib-ktx/build.gradle

@@ -47,6 +47,7 @@ dependencies {
     api libs.rxjava
     api libs.rxandroid
     api libs.recyclerview
+    api libs.acrivity_ktx
     api libs.lifecycle_viewmodel_ktx
     api libs.lifecycle_runtime_ktx
 

lib-ktx/src/main/java/com/xiaojinzi/support/ktx/Activities.kt

@@ -0,0 +1,17 @@
+package com.xiaojinzi.support.ktx
+
+import androidx.activity.viewModels
+import androidx.fragment.app.FragmentActivity
+import androidx.lifecycle.ViewModel
+
+class InitOnceViewModel: ViewModel() {
+    var isInit: Boolean = false
+}
+
+fun FragmentActivity.initOnceUseViewModel(action: () -> Unit) {
+    val initViewModel: InitOnceViewModel by this.viewModels()
+    if (!initViewModel.isInit) {
+        initViewModel.isInit = true
+        action.invoke()
+    }
+}