[英]CameraX - crash app on onPause() while recording video
如果在錄制視頻時最小化應用程序 - 一切正常,但是一旦我部署應用程序,就會收到此錯誤:
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)
或者,如果我在 onPause videoCapture?.stopRecording()
上停止錄制,則會出現此錯誤:
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)
如何在最小化應用程序時正確停止錄制視頻???
這是我的代碼: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)
}
}
設置 videoConfig 和 videoCapture:
val videoCaptureConfig = VideoCaptureConfig.Builder().apply {
setLensFacing(lensFacing)
setTargetAspectRatioCustom(screenAspectRatio)
setTargetRotation(rotation)
}.build()
videoCapture = VideoCapture(videoCaptureConfig)
然后我開始錄制視頻:
videoCapture?.startRecording(videoFile,
CameraXExecutors.mainThreadExecutor(), recordListener)
在 onPause() 上,我得到的錯誤如上所述
謝謝
在 onPause 上停止視頻時我遇到了同樣的錯誤。 為了解決這個問題,我在調用super.onPause()
之前添加了一個延遲(參見: android: camera onPause/onResume issue )。
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) {
}
};
button.setOnClickListener(v -> {
if(!isRecording){
videoCapture.startRecording(videoFile, CameraXExecutors.mainThreadExecutor(), videoSavedListener);
isRecording = true;
}else{
videoCapture.stopRecording();
}
});
@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();
}
請注意,視頻錄制用例目前在 API 中標記為隱藏,處於非常初步的狀態,可能會發生變化。
編輯:對於某些設備,在使用 videoCapture 用例集調用onPause()
時,應用程序仍然會崩潰。 我添加了CameraX.unbindAll()
以在調用super.onPause()
之前刪除所有用例。 然后,在onResume()
方法中我再次綁定它們。
聲明一個布爾變量
public class MyClass{
private boolean isSafe;
private boolean isPending
onPause{
isSafe=false;
}
onPostResume{
isSafe=true;
if(isPending)
methodForDoingUrAction();
}
methodForDoingUrAction(){
if(isSAfe){
//do your process
isPending=false;
}
else
isPending=true;
}
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.