媒体投影需要Android Pie和Q中的ServiceInfo.FOREGROUND_SERVICE TYPE_MEDIA_PROJECTION类型的前台服务 [英] Media projections require a foreground service of type ServiceInfo.FOREGROUND_SERVICE TYPE_MEDIA_PROJECTION in Android Pie and Q

问题描述

任何人都知道为什么会发生此错误，媒体投影需要在getMediaProjection()上使用类型为ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PROJECTION的前台服务，即使我在调用startforeground()方法之后也调用了getMediaProjection()方法.

堆栈跟踪为:

 进程:com.al1.screenrecorder，PID:24641java.lang.RuntimeException:无法启动Income {cmp = com.al1.screenrecorder/.service.DisplayRecorderService(有其他功能)}的服务com.al1.screenrecorder.service.DisplayRecorderService@9ef2101:java.lang.SecurityException:媒体投影需要ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PROJECTION类型的前台服务在android.app.ActivityThread.handleServiceArgs(ActivityThread.java:4661)在android.app.ActivityThread.access $ 2900(ActivityThread.java:292)在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:2246)在android.os.Handler.dispatchMessage(Handler.java:107)在android.os.Looper.loop(Looper.java:213)在android.app.ActivityThread.main(ActivityThread.java:8147)在java.lang.reflect.Method.invoke(本机方法)在com.android.internal.os.RuntimeInit $ MethodAndArgsCaller.run(RuntimeInit.java:513)在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1101)由以下原因引起:java.lang.SecurityException:媒体投影需要ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PROJECTION类型的前台服务在android.os.Parcel.createException(Parcel.java:2071)在android.os.Parcel.readException(Parcel.java:2039)在android.os.Parcel.readException(Parcel.java:1987)在android.media.projection.IMediaProjection $ Stub $ Proxy.start(IMediaProjection.java:231)在android.media.projection.MediaProjection.< init>(MediaProjection.java:75)在android.media.projection.MediaProjectionManager.getMediaProjection(MediaProjectionManager.java:104)在com.al1.screenrecorder.service.DisplayRecorderService.createMediaProjection(DisplayRecorderService.java:118)在com.al1.screenrecorder.service.DisplayRecorderService.onStartCommand(DisplayRecorderService.java:107)在android.app.ActivityThread.handleServiceArgs(ActivityThread.java:4641)在android.app.ActivityThread.access $ 2900(ActivityThread.java:292)在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:2246)在android.os.Handler.dispatchMessage(Handler.java:107)在android.os.Looper.loop(Looper.java:213)在android.app.ActivityThread.main(ActivityThread.java:8147)在java.lang.reflect.Method.invoke(本机方法)在com.android.internal.os.RuntimeInit $ MethodAndArgsCaller.run(RuntimeInit.java:513)在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1101)引起原因:android.os.RemoteException:远程堆栈跟踪:在com.android.server.media.projection.MediaProjectionManagerService $ MediaProjection.start(MediaProjectionManagerService.java:498)在android.media.projection.IMediaProjection $ Stub.onTransact(IMediaProjection.java:135)在android.os.Binder.execTransactInternal(Binder.java:1028)在android.os.Binder.execTransact(Binder.java:1001) 

强文本私人无效startForeground(){

  Intent activityIntent =新的Intent(this，MainActivity.class);activityIntent.setAction("stop");PendingIntent contentIntent = PendingIntent.getActivity(this，0，activityIntent，PendingIntent.FLAG_UPDATE_CURRENT);如果(Build.VERSION.SDK_INT> = Build.VERSION_CODES.O){字符串channelId ="001";字符串channelName ="myChannel";NotificationChannel channel =新的NotificationChannel(channelId，channelName，NotificationManager.IMPORTANCE_NONE);channel.setLightColor(Color.BLUE);channel.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);NotificationManager管理器=(NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);if(manager！= null){manager.createNotificationChannel(channel);通知通知=新通知.生成器(getApplicationContext()，channelId).setOngoing(真).setSmallIcon(R.mipmap.ic_launcher).setCategory(Notification.CATEGORY_SERVICE).setContentTitle(getString(R.string.ClickToCancel)).setContentIntent(contentIntent).建造();如果(Build.VERSION.SDK_INT> = Build.VERSION_CODES.Q){startForeground(0，通知，ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PROJECTION);} 别的 {startForeground(0，通知);}}} 别的 {startForeground(0，new Notification());}} 

，onStartCommand是:

  public int onStartCommand(意图意图，整数标志，整数startId){Log.i(TAG，已调用Service onStartCommand()")；startForeground();mResultCode = intent.getIntExtra("code"，-1);mResultData = intent.getParcelableExtra("data");mScreenWidth = intent.getIntExtra("width"，720);mScreenHeight = intent.getIntExtra("height"，1280);mScreenDensity = intent.getIntExtra("density"，1);isVideoSd = intent.getBooleanExtra("quality"，true);isAudio = intent.getBooleanExtra("audio"，true);mMediaProjection = createMediaProjection();mMediaRecorder = createMediaRecorder();mVirtualDisplay = createVirtualDisplay();mMediaRecorder.start();返回服务.START_STICKY;} 

，并且在getMediaProjection的此方法中例外:

 私人MediaProjection createMediaProjection(){Log.i(TAG，创建MediaProjection")；返回((MediaProjectionManager)Objects.requireNonNull(getSystemService(Context.MEDIA_PROJECTION_SERVICE))).getMediaProjection(mResultCode，mResultData);} 

解决方案

向清单中的< service> 元素中添加 android:foregroundServiceType ="mediaProjection" 您的服务.

any body knows why this error occur, Media projections require a foreground service of type ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PROJECTION on getMediaProjection() even i call getMediaProjection() method after calling startforeground() method..!

Stack Trace is :

  Process: com.al1.screenrecorder, PID: 24641
java.lang.RuntimeException: Unable to start service com.al1.screenrecorder.service.DisplayRecorderService@9ef2101 with Intent { cmp=com.al1.screenrecorder/.service.DisplayRecorderService (has extras) }: java.lang.SecurityException: Media projections require a foreground service of type ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PROJECTION
    at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:4661)
    at android.app.ActivityThread.access$2900(ActivityThread.java:292)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2246)
    at android.os.Handler.dispatchMessage(Handler.java:107)
    at android.os.Looper.loop(Looper.java:213)
    at android.app.ActivityThread.main(ActivityThread.java:8147)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1101)
 Caused by: java.lang.SecurityException: Media projections require a foreground service of type ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PROJECTION
    at android.os.Parcel.createException(Parcel.java:2071)
    at android.os.Parcel.readException(Parcel.java:2039)
    at android.os.Parcel.readException(Parcel.java:1987)
    at android.media.projection.IMediaProjection$Stub$Proxy.start(IMediaProjection.java:231)
    at android.media.projection.MediaProjection.<init>(MediaProjection.java:75)
    at android.media.projection.MediaProjectionManager.getMediaProjection(MediaProjectionManager.java:104)
    at com.al1.screenrecorder.service.DisplayRecorderService.createMediaProjection(DisplayRecorderService.java:118)
    at com.al1.screenrecorder.service.DisplayRecorderService.onStartCommand(DisplayRecorderService.java:107)
    at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:4641)
    at android.app.ActivityThread.access$2900(ActivityThread.java:292) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2246) 
    at android.os.Handler.dispatchMessage(Handler.java:107) 
    at android.os.Looper.loop(Looper.java:213) 
    at android.app.ActivityThread.main(ActivityThread.java:8147) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1101) 
 Caused by: android.os.RemoteException: Remote stack trace:
    at com.android.server.media.projection.MediaProjectionManagerService$MediaProjection.start(MediaProjectionManagerService.java:498)
    at android.media.projection.IMediaProjection$Stub.onTransact(IMediaProjection.java:135)
    at android.os.Binder.execTransactInternal(Binder.java:1028)
    at android.os.Binder.execTransact(Binder.java:1001)

strong text private void startForeground() {

    Intent activityIntent = new Intent(this, MainActivity.class);
    activityIntent.setAction("stop");
    PendingIntent contentIntent = PendingIntent.getActivity(this, 0, activityIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

        String channelId = "001";
        String channelName = "myChannel";
        NotificationChannel channel = new NotificationChannel(channelId, channelName, NotificationManager.IMPORTANCE_NONE);
        channel.setLightColor(Color.BLUE);
        channel.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);

        NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        if (manager != null) {
            manager.createNotificationChannel(channel);
            Notification notification = new Notification.
                    Builder(getApplicationContext(), channelId)
                    .setOngoing(true)
                    .setSmallIcon(R.mipmap.ic_launcher)
                    .setCategory(Notification.CATEGORY_SERVICE)
                    .setContentTitle(getString(R.string.ClickToCancel))
                    .setContentIntent(contentIntent)
                    .build();
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
                startForeground(0, notification, ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PROJECTION);
            } else {
                startForeground(0, notification);
            }
        }
    } else {
        startForeground(0, new Notification());
    }

}

and onStartCommand is :

public int onStartCommand(Intent intent, int flags, int startId) {
    Log.i(TAG, "Service onStartCommand() is called");

    startForeground();

    mResultCode = intent.getIntExtra("code", -1);
    mResultData = intent.getParcelableExtra("data");
    mScreenWidth = intent.getIntExtra("width", 720);
    mScreenHeight = intent.getIntExtra("height", 1280);
    mScreenDensity = intent.getIntExtra("density", 1);
    isVideoSd = intent.getBooleanExtra("quality", true);
    isAudio = intent.getBooleanExtra("audio", true);


    mMediaProjection = createMediaProjection();
    mMediaRecorder = createMediaRecorder();
    mVirtualDisplay = createVirtualDisplay();
    mMediaRecorder.start();

    return Service.START_STICKY;
}

and exception is in this method on getMediaProjection:

 private MediaProjection createMediaProjection() {
    Log.i(TAG, "Create MediaProjection");
    return ((MediaProjectionManager) Objects.requireNonNull(getSystemService(Context.MEDIA_PROJECTION_SERVICE))).
            getMediaProjection(mResultCode, mResultData);
}

解决方案

Add android:foregroundServiceType="mediaProjection" to the <service> element in the manifest for your service.

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