feat: Error with run android (#172)

example/android/app/build.gradle

@@ -1,69 +1,58 @@
+plugins {
+    id "com.android.application"
+    id "kotlin-android"
+    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
+    id "dev.flutter.flutter-gradle-plugin"
+}
+
 def localProperties = new Properties()
-def localPropertiesFile = rootProject.file('local.properties')
+def localPropertiesFile = rootProject.file("local.properties")
 if (localPropertiesFile.exists()) {
-    localPropertiesFile.withReader('UTF-8') { reader ->
+    localPropertiesFile.withReader("UTF-8") { reader ->
         localProperties.load(reader)
     }
 }
 
-def flutterRoot = localProperties.getProperty('flutter.sdk')
-if (flutterRoot == null) {
-    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
-}
-
-def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
+def flutterVersionCode = localProperties.getProperty("flutter.versionCode")
 if (flutterVersionCode == null) {
-    flutterVersionCode = '1'
+    flutterVersionCode = "1"
 }
 
-def flutterVersionName = localProperties.getProperty('flutter.versionName')
+def flutterVersionName = localProperties.getProperty("flutter.versionName")
 if (flutterVersionName == null) {
-    flutterVersionName = '1.0'
+    flutterVersionName = "1.0"
 }
 
-apply plugin: 'com.android.application'
-apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
-
 android {
-    compileSdkVersion 30
+    namespace = "com.example.example"
+    compileSdk = flutter.compileSdkVersion
+    ndkVersion = flutter.ndkVersion
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
 
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId "io.openim.flutter_openim_sdk_example"
-        minSdkVersion 21
-        targetSdkVersion 30
-        versionCode flutterVersionCode.toInteger()
-        versionName flutterVersionName
+        applicationId = "com.example.example"
+        // You can update the following values to match your application needs.
+        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
+        minSdk = flutter.minSdkVersion
+        targetSdk = flutter.targetSdkVersion
+        versionCode = flutterVersionCode.toInteger()
+        versionName = flutterVersionName
     }
 
     buildTypes {
-        debug {
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
-        }
         release {
             // TODO: Add your own signing config for the release build.
             // Signing with the debug keys for now, so `flutter run --release` works.
-            // signingConfig signingConfigs.debug
-
-            signingConfig signingConfigs.debug
-
-            minifyEnabled false
-            shrinkResources false
-
-            useProguard true
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
-        }
-    }
-
-    repositories{
-        flatDir {
-            dirs 'libs'
+            signingConfig = signingConfigs.debug
         }
     }
 }
-dependencies {
 
-}
 flutter {
-    source '../..'
+    source = "../.."
 }