Screen recording: stop failed and Failure delivering result ResultInfo

Question

I can't succeed in screen recording, it starts recording ok but when it stops app crashes

the error:

E/MediaRecorder: stop failed: -1007 D/AndroidRuntime: Shutting down VM E/AndroidRuntime: FATAL EXCEPTION: main Process: com.confusedbox.screenrecorder, PID: 6314 java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1000, result=-1, data=Intent { (has extras) }} to activity {com.confusedbox.screenrecorder/com.confusedbox.screenrecorder.ScreenRecord}: java.lang.RuntimeException: stop failed. at android.app.ActivityThread.deliverResults(ActivityThread.java:3706) at android.app.ActivityThread.handleSendResult(ActivityThread.java:3749) at android.app.ActivityThread.access$1400(ActivityThread.java:153) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1400) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5441) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:628) Caused by: java.lang.RuntimeException: stop failed. at android.media.MediaRecorder.stop(Native Method) at com.confusedbox.screenrecorder.ScreenRecord.onActivityResult(ScreenRecord.java:48) at android.app.Activity.dispatchActivityResult(Activity.java:6508) at android.app.ActivityThread.deliverResults(ActivityThread.java:3702) at android.app.ActivityThread.handleSendResult(ActivityThread.java:3749)  at android.app.ActivityThread.access$1400(ActivityThread.java:153)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1400)  at android.os.Handler.dispatchMessage(Handler.java:102)  at android.os.Looper.loop(Looper.java:148)  at android.app.ActivityThread.main(ActivityThread.java:5441)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:628)

public class ScreenRecord extends AppCompatActivity {

    MediaRecorder mr;
    MediaProjection mp;
    int dw = 720;
    int dh = 1280;
    MediaProjectionManager mpm;
    DisplayMetrics metrics;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mr = new MediaRecorder();
        initRecorder();
        mpm = (MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE);
        startActivityForResult(mpm.createScreenCaptureIntent(), 1000);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        metrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(metrics);
        mp = mpm.getMediaProjection(resultCode, data);
        mp.createVirtualDisplay(getClass().getName(), dw, dh, metrics.densityDpi,
                DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR, mr.getSurface(), 
                null, null);
        mr.start();
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
        mr.stop();
    }

    private void initRecorder() {
        try {
            mr.setVideoSource(MediaRecorder.VideoSource.SURFACE);
            mr.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
            mr.setOutputFile(Environment
                    .getExternalStoragePublicDirectory(Environment
                            .DIRECTORY_DOWNLOADS) + "/video.mp4");
            mr.setVideoSize(dw, dh);
            mr.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
            mr.setVideoEncodingBitRate(12 * 1000 * 1000);
            mr.setVideoFrameRate(60);
            mr.prepare();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Android 6 (Marshmallow)

Answer 1

Move the stop() to some other place, after you are sure that the recording has actually started. My guess is that start() does not take effect until sometime after you return control of the main application thread to Android.