如果在录制视频时将应用程序最小化-一切正常,但是一旦我部署了该应用程序,则应收到此错误:

E/AndroidRuntime: FATAL EXCEPTION: CameraX-video encoding thread
Process: <pkgname>, PID: 12340
java.lang.IllegalStateException
    at android.media.MediaCodec.native_dequeueOutputBuffer(Native Method)
    at android.media.MediaCodec.dequeueOutputBuffer(MediaCodec.java:2698)
    at androidx.camera.core.VideoCapture.videoEncode(VideoCapture.java:604)
    at androidx.camera.core.VideoCapture$2.run(VideoCapture.java:348)
    at android.os.Handler.handleCallback(Handler.java:873)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:214)
    at android.os.HandlerThread.run(HandlerThread.java:65)


要么
 如果我停止在onPause videoCapture?.stopRecording()上录制,则会出现此错误:

E/AndroidRuntime: FATAL EXCEPTION: CameraX-
Process: <pkgname>, PID: 9489
java.lang.IllegalStateException
    at androidx.core.util.Preconditions.checkState(Preconditions.java:96)
    at androidx.core.util.Preconditions.checkState(Preconditions.java:108)
    at androidx.camera.camera2.impl.Camera.openCaptureSession(Camera.java:874)
    at androidx.camera.camera2.impl.Camera.onUseCaseReset(Camera.java:625)
    at androidx.camera.camera2.impl.Camera$11.run(Camera.java:611)
    at android.os.Handler.handleCallback(Handler.java:873)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:214)
    at android.os.HandlerThread.run(HandlerThread.java:65)


如何在最小化应用程序的同时正确停止录制视频???

这是我的代码:
我收集配置:

CameraX.unbindAll()
    getDisplayMetrics()
    setPreviewConfig()

    when (typeCapture) {
        TYPE_IMAGE -> {
            setImageCapture()
            CameraX.bindToLifecycle(this, preview, imageCapture)
        }
        TYPE_VIDEO -> {
            setVideoCapture()
            CameraX.bindToLifecycle(this, preview, videoCapture)
        }
    }


设置videoConfig和videoCapture:

val videoCaptureConfig = VideoCaptureConfig.Builder().apply {
        setLensFacing(lensFacing)
        setTargetAspectRatioCustom(screenAspectRatio)
        setTargetRotation(rotation)
    }.build()

    videoCapture = VideoCapture(videoCaptureConfig)


然后我开始录制视频:

videoCapture?.startRecording(videoFile,
CameraXExecutors.mainThreadExecutor(), recordListener)


在onPause()上,我得到的错误如上所述

谢谢

最佳答案

在onPause上停止视频时,我遇到了相同的错误。为了解决这个问题,我在调用super.onPause()之前添加了一个延迟(请参阅:android: camera onPause/onResume issue)。


声明videoSavedListener


private VideoCapture.OnVideoSavedListener videoSavedListener= new VideoCapture.OnVideoSavedListener() {
    @Override
    public void onVideoSaved(@NonNull File file) {
        if(isRecording) {
            isRecording = false;
            // Do whatever you want
        }
    }

    @Override
    public void onError(@NonNull VideoCapture.VideoCaptureError videoCaptureError, @NonNull String message, @Nullable Throwable cause) {

    }
};



添加onClickListener


button.setOnClickListener(v -> {
    if(!isRecording){
        videoCapture.startRecording(videoFile, CameraXExecutors.mainThreadExecutor(), videoSavedListener);
        isRecording = true;
     }else{
        videoCapture.stopRecording();
     }
});



覆盖onPause()


    @SuppressLint("RestrictedApi")
    @Override
    public void onPause() {
        if(isRecording){
            isRecording = false;
            videoCapture.stopRecording();

            try {
                Thread.sleep(500);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            super.onPause();
        }else
            super.onPause();
    }



  请注意,视频录制用例当前标记为
  隐藏在API中,并且处于非常初步的状态,
  更改。


编辑:在某些设备上,使用videoCapture用例集调用onPause()时,应用仍然崩溃。我添加了CameraX.unbindAll()来删除所有用例,然后再调用super.onPause()。然后,在onResume()方法中再次绑定它们。

07-24 09:46
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