Fix Cannot Build Flutter APK

analysis_options.yaml

@@ -5,7 +5,7 @@ linter:
   rules:
     - camel_case_types
     - hash_and_equals
-    - iterable_contains_unrelated_type
-    - list_remove_unrelated_type
+    # - iterable_contains_unrelated_type
+    # - list_remove_unrelated_type
     - unrelated_type_equality_checks
-    - valid_regexps
+    - valid_regexps

android/build.gradle

@@ -25,15 +25,27 @@ apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
 
 android {
-    compileSdkVersion 28
+    namespace = "com.example.installplugin"
+    compileSdkVersion 31
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8  // Set Java version to 1.8
+        targetCompatibility JavaVersion.VERSION_1_8  // Set target compatibility to 1.8
+    }
+
+    kotlinOptions {
+        jvmTarget = "1.8"  // Set Kotlin jvm target to 1.8
+    }
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
     }
+
     defaultConfig {
         minSdkVersion 16
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
+
     lintOptions {
         disable 'InvalidPackage'
     }

android/src/main/AndroidManifest.xml

@@ -1,5 +1,4 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-  package="com.example.installplugin">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
 
     <application>

test/install_plugin_test.dart

@@ -8,9 +8,10 @@ void main() {
   final List<MethodCall> log = <MethodCall>[];
   String? response;
 
-  channel.setMockMethodCallHandler((MethodCall methodCall) async {
-    log.add(methodCall);
-    return response;
+  TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
+      .setMockMethodCallHandler(channel, (MethodCall methodCall) async {
+    log.add(methodCall); // Log the method call
+    return response; // Return the predefined response
   });
 
   tearDown(() {