add compatibility with Android Gradle Plugin 8

bump compile sdk to 34

set single package name flutter.overlay.window.flutter_overlay_window

set gradle version to 7.3.0

.metadata

@@ -4,7 +4,27 @@
 # This file should be version controlled and should not be manually edited.
 
 version:
-  revision: c860cba910319332564e1e9d470a17074c1f2dfd
-  channel: stable
+  revision: "abb292a07e20d696c4568099f918f6c5f330e6b0"
+  channel: "stable"
 
 project_type: plugin
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: abb292a07e20d696c4568099f918f6c5f330e6b0
+      base_revision: abb292a07e20d696c4568099f918f6c5f330e6b0
+    - platform: android
+      create_revision: abb292a07e20d696c4568099f918f6c5f330e6b0
+      base_revision: abb292a07e20d696c4568099f918f6c5f330e6b0
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

android/.gitignore

@@ -6,3 +6,4 @@
 .DS_Store
 /build
 /captures
+.cxx

android/build.gradle

@@ -1,4 +1,4 @@
-group 'com.example.flutter_overlay_window'
+group 'flutter.overlay.window.flutter_overlay_window'
 version '1.0'
 
 buildscript {
@@ -8,7 +8,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.4.0'
+        classpath 'com.android.tools.build:gradle:7.3.0'
     }
 }
 
@@ -22,7 +22,11 @@ rootProject.allprojects {
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 31
+    if (project.android.hasProperty("namespace")) {
+        namespace 'flutter.overlay.window.flutter_overlay_window'
+    }
+
+    compileSdk 34
 
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_8
@@ -32,4 +36,19 @@ android {
     defaultConfig {
         minSdkVersion 16
     }
+
+    dependencies {
+        testImplementation 'junit:junit:4.13.2'
+        testImplementation 'org.mockito:mockito-core:5.0.0'
+    }
+
+    testOptions {
+        unitTests.all {
+            testLogging {
+               events "passed", "skipped", "failed", "standardOut", "standardError"
+               outputs.upToDateWhen {false}
+               showStandardStreams = true
+            }
+        }
+    }
 }

android/src/main/AndroidManifest.xml

@@ -1,5 +1,6 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.flutter_overlay_window">
-  <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
-  <uses-permission android:name="android.permission.WAKE_LOCK" />
-  <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
-</manifest>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="flutter.overlay.window.flutter_overlay_window">
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
+    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
+</manifest>

android/src/main/java/flutter/overlay/window/flutter_overlay_window/OverlayService.java

@@ -27,7 +27,7 @@
 import androidx.annotation.RequiresApi;
 import androidx.core.app.NotificationCompat;
 
-import com.example.flutter_overlay_window.R;
+import flutter.overlay.window.flutter_overlay_window.R;
 
 import java.util.Timer;
 import java.util.TimerTask;

android/src/main/java/flutter/overlay/window/flutter_overlay_window/WindowSetup.java

@@ -1,6 +1,5 @@
 package flutter.overlay.window.flutter_overlay_window;
 
-
 import android.view.Gravity;
 import android.view.WindowManager;
 import androidx.core.app.NotificationCompat;