Update gradle and rewrite project with kotlin

app/build.gradle

@@ -1,28 +1,36 @@
-apply plugin: 'com.android.application'
+plugins {
+    id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+}
 
 android {
-    compileSdkVersion 30
-    buildToolsVersion "30.0.1"
+    compileSdk 32
 
     defaultConfig {
         applicationId "com.cyunrei.videolivewallpaper"
         minSdkVersion 21
-        targetSdkVersion 30
+        targetSdkVersion 32
         versionCode 2
         versionName "0.1.4.4_200811_nano"
     }
+
     buildTypes {
         release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            minifyEnabled true
+            shrinkResources true
+            proguardFiles(getDefaultProguardFile('proguard-android-optimize.txt'),
+                    'proguard-rules.pro')
         }
     }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
 }
 
 dependencies {
-    implementation fileTree(dir: 'libs', include: ['*.aar', '*.jar'], exclude: [])
-
-}
-
-
-
+    implementation 'androidx.core:core-ktx:1.8.0'
+}

app/proguard-rules.pro

@@ -1,17 +1,21 @@
 # Add project specific ProGuard rules here.
-# By default, the flags in this file are appended to flags specified
-# in C:\tools\adt-bundle-windows-x86_64-20131030\sdk/tools/proguard/proguard-android.txt
-# You can edit the include path and order by changing the proguardFiles
-# directive in build.gradle.
+# 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
 
-# Add any project specific keep options here:
-
 # 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/main/AndroidManifest.xml

@@ -1,35 +1,37 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
-    package="com.cyunrei.videolivewallpaper" >
+    package="com.cyunrei.videolivewallpaper">
 
     <uses-permission android:name="android.permission.SET_WALLPAPER" />
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 
     <application
-        android:label="@string/app_name"
-        android:theme="@android:style/Theme.Material.Light"
         android:allowBackup="true"
+        android:label="@string/app_name"
         android:requestLegacyExternalStorage="true"
         tools:ignore="AllowBackup,MissingApplicationIcon"
         tools:targetApi="q">
         <activity
-            android:name=".MainActivity"
-            android:label="@string/app_name" >
+            android:name=".activity.MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-				<category android:name="android.intent.category.LAUNCHER" />
+                <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
         <activity
-            android:name=".Settings"
+            android:name=".activity.SettingsActivity"
+            android:exported="false"
             android:label="@string/settings">
             <intent-filter>
-                <action android:name="android.intent.action.APPLICATION_PREFERENCES"/>
+                <action android:name="android.intent.action.APPLICATION_PREFERENCES" />
             </intent-filter>
         </activity>
-		<service
-            android:name=".VideoLiveWallpaper"
+
+        <service
+            android:name=".service.VideoLiveWallpaperService"
+            android:exported="true"
             android:label="@string/app_name"
             android:permission="android.permission.BIND_WALLPAPER"
             android:process=":wallpaper">
@@ -40,8 +42,10 @@
                 android:name="android.service.wallpaper"
                 android:resource="@xml/livewallpaper" />
         </service>
-
-        <receiver android:name=".BootBroadCast" >
+
+        <receiver
+            android:name=".broadcast.BootBroadCast"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.BOOT_COMPLETED" />
             </intent-filter>