7/31/1
This commit is contained in:
Hamza-Ayed
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.phan_tech.flutter_overlay_apps"
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>
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</manifest>
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package com.phan_tech.flutter_overlay_apps
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import android.app.Activity
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import android.content.Context
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import android.content.Intent
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import android.net.Uri
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import android.os.Build
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import android.provider.Settings
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import androidx.annotation.NonNull
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import androidx.annotation.RequiresApi
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import io.flutter.FlutterInjector
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import io.flutter.embedding.engine.FlutterEngineCache
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import io.flutter.embedding.engine.FlutterEngineGroup
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import io.flutter.embedding.engine.dart.DartExecutor
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import io.flutter.embedding.engine.plugins.FlutterPlugin
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import io.flutter.embedding.engine.plugins.activity.ActivityAware
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import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding
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import io.flutter.plugin.common.*
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import io.flutter.plugin.common.MethodChannel.MethodCallHandler
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import io.flutter.plugin.common.MethodChannel.Result
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const val mainAppMethodChannel: String = "com.phan_tech/flutter_overlay_apps"
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const val overlayAppMethodChannel: String = "com.phan_tech/flutter_overlay_apps/overlay"
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const val overlayAppMessageChannel: String = "com.phan_tech/flutter_overlay_apps/overlay/messenger"
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/** FlutterOverlayAppsPlugin */
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class FlutterOverlayAppsPlugin : FlutterPlugin, MethodCallHandler, ActivityAware, BasicMessageChannel.MessageHandler<Any?> {
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private lateinit var channel: MethodChannel
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private lateinit var messenger: BasicMessageChannel<Any?>
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private lateinit var context: Context
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private var activity: Activity? = null
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override fun onDetachedFromEngine(@NonNull binding: FlutterPlugin.FlutterPluginBinding) {
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channel.setMethodCallHandler(null)
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}
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override fun onAttachedToActivity(binding: ActivityPluginBinding) {
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activity = binding.activity
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context = binding.activity.applicationContext
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WindowSetup.messenger = messenger
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WindowSetup.messenger!!.setMessageHandler(this)
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val engineGroup = FlutterEngineGroup(context)
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val dartEntrypoint = DartExecutor.DartEntrypoint(
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FlutterInjector.instance().flutterLoader().findAppBundlePath(),
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"showOverlay"
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)
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val engine = engineGroup.createAndRunEngine(context, dartEntrypoint)
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FlutterEngineCache.getInstance().put("my_engine_id", engine)
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}
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override fun onDetachedFromActivityForConfigChanges() {
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activity = null
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}
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override fun onReattachedToActivityForConfigChanges(binding: ActivityPluginBinding) {
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activity = binding.activity
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}
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override fun onDetachedFromActivity() {
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activity = null
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}
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override fun onAttachedToEngine(@NonNull flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
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channel = MethodChannel(flutterPluginBinding.binaryMessenger, mainAppMethodChannel)
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channel.setMethodCallHandler(this)
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messenger = BasicMessageChannel(flutterPluginBinding.binaryMessenger, overlayAppMessageChannel, JSONMessageCodec.INSTANCE)
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messenger.setMessageHandler(this)
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}
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override fun onMethodCall(@NonNull call: MethodCall, @NonNull result: Result) {
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val currentActivity = activity
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if (currentActivity == null) {
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result.error("activity_not_attached", "Activity is not attached", null)
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return
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}
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when (call.method) {
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"showOverlay" -> {
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if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
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result.error("1", "SDK version is lower than 23", "Requires Android SDK 23 and above")
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} else if (!checkPermissions()) {
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requestPermissions()
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} else {
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val height = call.argument<Int>("height")
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val width = call.argument<Int>("width")
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val alignment = call.argument<String>("alignment")
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val closeOnBackButton = call.argument<Boolean>("closeOnBackButton")
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WindowSetup.width = width ?: -1
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WindowSetup.height = height ?: -1
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WindowSetup.closeOnBackButton = closeOnBackButton ?: true
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WindowSetup.setGravityFromAlignment(alignment ?: "center")
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currentActivity.startService(Intent(context, OverlayService::class.java))
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result.success(true)
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}
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}
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else -> {
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result.notImplemented()
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}
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}
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}
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override fun onMessage(message: Any?, reply: BasicMessageChannel.Reply<Any?>) {
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val engine = FlutterEngineCache.getInstance().get("my_engine_id")
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if (engine != null) {
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val overlayMessageChannel = BasicMessageChannel(engine.dartExecutor, overlayAppMessageChannel, JSONMessageCodec.INSTANCE)
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overlayMessageChannel.send(message, reply)
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} else {
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reply.reply(null)
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}
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}
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@RequiresApi(Build.VERSION_CODES.M)
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private fun checkPermissions(): Boolean {
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return Settings.canDrawOverlays(context)
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}
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@RequiresApi(Build.VERSION_CODES.M)
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private fun requestPermissions() {
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activity?.let {
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it.startActivity(
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Intent(
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Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
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Uri.parse("package:${it.packageName}")
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)
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)
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}
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}
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}
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@@ -0,0 +1,97 @@
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package com.phan_tech.flutter_overlay_apps
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import android.app.Service
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import android.content.Intent
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import android.graphics.PixelFormat
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import android.os.Build
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import android.os.IBinder
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import android.view.KeyEvent
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import android.view.WindowManager
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import android.widget.FrameLayout
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import androidx.annotation.RequiresApi
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import io.flutter.embedding.android.FlutterView
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import io.flutter.embedding.engine.FlutterEngineCache
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import io.flutter.plugin.common.BasicMessageChannel
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import io.flutter.plugin.common.JSONMessageCodec
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import io.flutter.plugin.common.MethodCall
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import io.flutter.plugin.common.MethodChannel
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import org.json.JSONObject
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class OverlayService : Service() {
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private var windowManager: WindowManager? = null
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private lateinit var flutterView: FlutterView
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private val flutterChannel = MethodChannel(FlutterEngineCache.getInstance().get("my_engine_id")!!.dartExecutor, overlayAppMethodChannel)
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private val overlayMessageChannel = BasicMessageChannel(FlutterEngineCache.getInstance().get("my_engine_id")!!.dartExecutor, overlayAppMessageChannel, JSONMessageCodec.INSTANCE)
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override fun onBind(intent: Intent?): IBinder? {
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// Not used
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return null
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}
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@RequiresApi(Build.VERSION_CODES.O)
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override fun onCreate() {
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super.onCreate()
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val engine = FlutterEngineCache.getInstance().get("my_engine_id")!!
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engine.lifecycleChannel.appIsResumed()
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flutterView = object: FlutterView(applicationContext){
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override fun dispatchKeyEvent(event: KeyEvent): Boolean {
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return if (event.keyCode == KeyEvent.KEYCODE_BACK) {
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// handle the back button code;
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if(WindowSetup.closeOnBackButton){
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stopService(Intent(baseContext, OverlayService().javaClass))
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windowManager?.removeView(flutterView)
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}else{
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// send message
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overlayMessageChannel.send(JSONObject("{\"method\": \"backButton\"}"))// {"method" "backButton"}
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}
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true
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} else super.dispatchKeyEvent(event)
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}
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}
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flutterView.attachToFlutterEngine(FlutterEngineCache.getInstance().get("my_engine_id")!!)
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flutterView.fitsSystemWindows = true
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flutterChannel.setMethodCallHandler{ methodCall: MethodCall, result: MethodChannel.Result ->
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if(methodCall.method == "close"){
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val closed = stopService(Intent(baseContext, OverlayService().javaClass))
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result.success(closed)
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}
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}
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overlayMessageChannel.setMessageHandler(MyHandler())
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windowManager = getSystemService(WINDOW_SERVICE) as WindowManager?
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val params = WindowManager.LayoutParams(
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WindowSetup.width,
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WindowSetup.height,
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY
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else WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
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WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
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PixelFormat.TRANSLUCENT
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)
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params.flags = params.flags and WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE.inv()
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params.gravity = WindowSetup.gravity
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windowManager!!.addView(flutterView, params)
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}
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override fun onDestroy() {
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super.onDestroy()
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windowManager!!.removeView(flutterView)
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}
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}
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class MyHandler: BasicMessageChannel.MessageHandler<Any?>{
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override fun onMessage(message: Any?, reply: BasicMessageChannel.Reply<Any?>) {
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WindowSetup.messenger!!.send(message)
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}
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}
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@@ -0,0 +1,53 @@
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package com.phan_tech.flutter_overlay_apps
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import android.annotation.SuppressLint
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import android.view.Gravity
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import android.view.WindowManager
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import io.flutter.plugin.common.BasicMessageChannel
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object WindowSetup {
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var height: Int = -1
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var width: Int = WindowManager.LayoutParams.MATCH_PARENT
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var gravity: Int = Gravity.CENTER
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var messenger : BasicMessageChannel<Any?>? = null
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var closeOnBackButton : Boolean = true;
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@SuppressLint("RtlHardcoded")
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fun setGravityFromAlignment(alignment: String){
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when {
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alignment.lowercase() == "topLeft".lowercase() -> {
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gravity = Gravity.TOP or Gravity.LEFT
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}
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alignment.lowercase() == "topCenter".lowercase() -> {
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gravity = Gravity.TOP
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}
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alignment.lowercase() == "topRight".lowercase() -> {
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gravity = Gravity.TOP or Gravity.RIGHT
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}
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alignment.lowercase() == "centerLeft".lowercase() -> {
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gravity = Gravity.CENTER or Gravity.LEFT
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}
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alignment.lowercase() == "center".lowercase() -> {
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gravity = Gravity.CENTER
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}
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alignment.lowercase() == "centerRight".lowercase() -> {
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gravity = Gravity.CENTER or Gravity.RIGHT
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}
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alignment.lowercase() == "bottomLeft".lowercase() -> {
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gravity = Gravity.BOTTOM or Gravity.LEFT
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}
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alignment.lowercase() == "bottomCenter".lowercase() -> {
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gravity = Gravity.BOTTOM
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}
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alignment.lowercase() == "bottomRight".lowercase() -> {
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gravity = Gravity.BOTTOM or Gravity.RIGHT
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}
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}
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}
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}
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