我在 google play 中发布了我的应用。
此 Activity 通过前置摄像头录制视频，如果不可用，则使用后置摄像头
在崩溃部分我收到了这个输出:
java.lang.RuntimeException: stop failed.
at android.media.MediaRecorder.stop(Native Method)
at com.example.uploadvideo.MainActivity.onStopped(MainActivity.java:192)
at com.google.android.youtube.player.internal.s$4.c(Unknown Source)
at com.google.android.youtube.player.internal.f$a.onTransact(Unknown Source)
at android.os.Binder.transact(Binder.java:326)
at com.google.android.youtube.player.internal.n.c(SourceFile:144)
at com.google.android.youtube.api.jar.client.e.run(SourceFile:797)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4921)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
at dalvik.system.NativeStart.main(Native Method)
我不知道这是什么原因，也没有任何搜索帮助...
但我相信这个是通过 surfaceCreated 方法实现的
我认为这部分的原因:
/** A basic Camera preview class */
public class CameraPreview extends SurfaceView implements SurfaceHolder.Callback {
private String TAG = "CameraPreview";
private SurfaceHolder mHolder;
private Camera mCamera ;
public CameraPreview(Context context, Camera camera) {
super(context);
mCamera = camera;
// Install a SurfaceHolder.Callback so we get notified when the
// underlying surface is created and destroyed.
mHolder = getHolder();
mHolder.addCallback(this);
// deprecated setting, but required on Android versions prior to 3.0
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
public void surfaceCreated(SurfaceHolder holder){
// The Surface has been created, now tell the camera where to draw the
// preview.
Log.d(TAG, "surfaceCreated camera id" + mCamera);
try {
CamcorderProfile profile ;
int numCameras = Camera.getNumberOfCameras();
if (numCameras > 1) {
profile = (CamcorderProfile
.get(Camera.CameraInfo.CAMERA_FACING_FRONT,CamcorderProfile.QUALITY_HIGH));
}
else{
profile = (CamcorderProfile
.get(Camera.CameraInfo.CAMERA_FACING_BACK,CamcorderProfile.QUALITY_HIGH));
}
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewSize(profile.videoFrameWidth, profile.videoFrameHeight);
mCamera.setParameters(parameters);
mCamera.setPreviewDisplay(holder);
mCamera.startPreview();
}
catch (IOException e) {
Log.d(TAG, "Error setting camera preview: " + e.getMessage());
}}
public void surfaceDestroyed(SurfaceHolder holder) {
// empty. Take care of releasing the Camera preview in your activity.
}
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
// If your preview can change or rotate, take care of those events here.
// Make sure to stop the preview before resizing or reformatting it.
Log.d(TAG, "surfaceChanged to " + "," + w + "," + h);
if (mHolder.getSurface() == null){
// preview surface does not exist
return;
}
// stop preview before making changes
try {
mCamera.stopPreview();
} catch (Exception e){
// ignore: tried to stop a non-existent preview
}
// set preview size and make any resize, rotate or
// reformatting changes here
// start preview with new settings
try {
mCamera.setPreviewDisplay(mHolder);
mCamera.startPreview();
} catch (Exception e){
Log.d(TAG, "Error starting camera preview: " + e.getMessage());
}
}
}
private boolean prepareVideoRecorder() {
mMediaRecorder = new MediaRecorder();
// Step 1: Unlock and set camera to MediaRecorder
mCamera.unlock();
mMediaRecorder.setCamera(mCamera);
// Step 2: Set sources
mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
// Step 3: Set a CamcorderProfile (requires API Level 8 or higher)
int numCameras = Camera.getNumberOfCameras();
if (numCameras > 1) {
mMediaRecorder.setProfile(CamcorderProfile
.get(Camera.CameraInfo.CAMERA_FACING_FRONT,CamcorderProfile.QUALITY_HIGH));
}
else{
mMediaRecorder.setProfile(CamcorderProfile
.get(Camera.CameraInfo.CAMERA_FACING_BACK,CamcorderProfile.QUALITY_HIGH));
}
// Step 4: Set output file
mMediaRecorder.setOutputFile(getOutputMediaFile(MEDIA_TYPE_VIDEO)
.toString());
outputFileName = getOutputMediaFile(MEDIA_TYPE_VIDEO).toString();
Log.d(TAG,"idan outputFileName" + outputFileName);
// Step 5: Set the preview output
// mMediaRecorder.setVideoSize(640, 480); //try
mMediaRecorder.setPreviewDisplay(mPreview.getHolder().getSurface());
// Step 6: Prepare configured MediaRecorder
try {
mMediaRecorder.prepare();
} catch (IllegalStateException e) {
Log.d(TAG,
"IllegalStateException preparing MediaRecorder: "
+ e.getMessage());
releaseMediaRecorder();
return false;
} catch (IOException e) {
Log.d(TAG, "IOException preparing MediaRecorder: " + e.getMessage());
releaseMediaRecorder();
return false;
}
return true;
}
/** Create a file Uri for saving an image or video */
private Uri getOutputMediaFileUri(int type) {
return Uri.fromFile(getOutputMediaFile(type));
}
最佳答案
你可以使用这个代码来记录你的视频请检查
public class VideoCaptureActivity extends Activity {
private static final String TAG = "VideoCaptureActivity";
///////////////--------------------------
CountDownTimer ctimer;
//private static final int H264 = 0;
TextView timerText;
Camera camera;
ImageButton recordButton;
ImageButton stopButton;
FrameLayout cameraPreviewFrame;
CameraPreview cameraPreview;
MediaRecorder mediaRecorder;
File file;
public String holdVideoName = new String();
////////////////----------------------------
private String vpath;
@Override
public void onCreate(Bundle bundle) {
super.onCreate(bundle);
super.setContentView(R.layout.video_capture);
this.cameraPreviewFrame = (FrameLayout)super.findViewById(R.id.camera_preview);
this.recordButton = (ImageButton)super.findViewById(R.id.recordButton);
this.stopButton = (ImageButton)super.findViewById(R.id.stopButton);
this.timerText=(TextView)super.findViewById(R.id.textViewtimer);
this.toggleButtons(false);
//------------- we'll enable this button once the camera is ready
this.recordButton.setEnabled(false);
}
@Override
protected void onResume() {
super.onResume();
// initialize the camera in background, as this may take a while
new AsyncTask<Void, Void, Camera>() {
@Override
protected Camera doInBackground(Void... params) {
Camera camera=null;
try {
int numCameras = Camera.getNumberOfCameras();
System.out.println("number of cameara is"+numCameras );
if (numCameras ==1) {
System.out.println("camera 1");
camera = Camera.open(CameraInfo.CAMERA_FACING_BACK);
}
else{
camera = Camera.open(CameraInfo.CAMERA_FACING_FRONT);
}
return camera == null ? Camera.open() : camera;
} catch (RuntimeException e) {
return null;
}
}
@Override
protected void onPostExecute(Camera camera) {
if (camera == null) {
Toast.makeText(VideoCaptureActivity.this, R.string.cannot_record,
Toast.LENGTH_SHORT);
} else {
VideoCaptureActivity.this.initCamera(camera);
}
}
}.execute();
}
void initCamera(Camera camera) {
// we now have the camera
this.camera = camera;
// create a preview for our camera
this.cameraPreview = new CameraPreview(VideoCaptureActivity.this, this.camera);
// add the preview to our preview frame
this.cameraPreviewFrame.addView(this.cameraPreview, 0);
// enable just the record button
this.recordButton.setEnabled(true);
}
void releaseCamera() {
if (this.camera != null) {
this.camera.lock(); // unnecessary in API >= 14
this.camera.stopPreview();
this.camera.release();
this.camera = null;
this.cameraPreviewFrame.removeView(this.cameraPreview);
}
}
void releaseMediaRecorder() {
if (this.mediaRecorder != null) {
this.mediaRecorder.reset(); // clear configuration (optional here)
this.mediaRecorder.release();
this.mediaRecorder = null;
}
}
void releaseResources() {
this.releaseMediaRecorder();
this.releaseCamera();
}
@Override
public void onPause() {
super.onPause();
this.releaseResources();
}
// gets called by the button press
public void startRecording(View v) {
Log.d(TAG, "startRecording()");
// we need to unlock the camera so that mediaRecorder can use it
this.camera.unlock(); // unnecessary in API >= 14
// now we can initialize the media recorder and set it up with our
// camera
ctimer = new CountDownTimer(10000, 1000) {
@Override
public void onTick(long millisUntilFinished) {
// TODO Auto-generated method stub
timerText.setText("seconds remaining \n 00: " + millisUntilFinished / 1000);
}
@Override
public void onFinish() {
// TODO Auto-generated method stub
timerText.setText("done!");
stopRecordingg();
}
};
ctimer.start();
this.mediaRecorder = new MediaRecorder();
this.mediaRecorder.setCamera(this.camera);
this.mediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
this.mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
this.mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
// this.mediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_480P));
this.mediaRecorder.setMaxDuration(10000);
this.mediaRecorder.setOutputFile(this.initFile().getAbsolutePath());
this.mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
this.mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
this.mediaRecorder.setVideoSize(640,480);
// this.mediaRecorder.setVideoFrameRate(12);
// this.mediaRecorder.setOnInfoListener(null);
// this.mediaRecorder.setOutputFile("/sdcard/videocapture_example.mp4");
try {
this.mediaRecorder.setPreviewDisplay(this.cameraPreview.getHolder().getSurface());
this.mediaRecorder.prepare();
// start the actual recording
// throws IllegalStateException if not prepared
this.mediaRecorder.start();
Toast.makeText(this, R.string.recording, Toast.LENGTH_SHORT).show();
// enable the stop button by indicating that we are recording
this.toggleButtons(true);
} catch (Exception e) {
Log.wtf(TAG, "Failed to prepare MediaRecorder", e);
Toast.makeText(this,"record nathi thatu...", Toast.LENGTH_SHORT).show();
this.releaseMediaRecorder();
}
}
protected void stopRecordingg() {
// TODO Auto-generated method stub
Log.d(TAG, "stopRecording()");
assert this.mediaRecorder != null;
try {
// this.mediaRecorder.stop();
Toast.makeText(this, R.string.saved, Toast.LENGTH_SHORT).show();
// we are no longer recording
this.toggleButtons(false);
} catch (RuntimeException e) {
// the recording did not succeed
Log.w(TAG, "Failed to record", e);
if (this.file != null && this.file.exists() && this.file.delete()) {
Log.d(TAG, "Deleted " + this.file.getAbsolutePath());
}
return;
} finally {
this.releaseMediaRecorder();
}
if (this.file == null || !this.file.exists()) {
Log.w(TAG, "File does not exist after stop: " + this.file.getAbsolutePath());
} else {
Log.d(TAG, "Going to display the video: " + this.file.getAbsolutePath());
Intent intent = new Intent(this, VideoPlayBack.class);
intent.setData(Uri.fromFile(file));
intent.putExtra("hold",getIntent().getExtras().getString("hold"));
intent.putExtra("cwi",getIntent().getExtras().getString("cwi"));
// intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
this.finish();
}
}
// gets called by the button press
public void stopRecording(View v) {
Log.d(TAG, "stopRecording()");
ctimer.cancel();
assert this.mediaRecorder != null;
try {
this.mediaRecorder.stop();
Toast.makeText(this, R.string.saved, Toast.LENGTH_SHORT).show();
// we are no longer recording
this.toggleButtons(false);
} catch (RuntimeException e) {
// the recording did not succeed
Log.w(TAG, "Failed to record", e);
if (this.file != null && this.file.exists() && this.file.delete()) {
Log.d(TAG, "Deleted " + this.file.getAbsolutePath());
}
return;
} finally {
this.releaseMediaRecorder();
}
if (this.file == null || !this.file.exists()) {
Log.w(TAG, "File does not exist after stop: " + this.file.getAbsolutePath());
} else {
Log.d(TAG, "Going to display the video: " + this.file.getAbsolutePath());
Intent intent = new Intent(this, VideoPlayBack.class);
intent.setData(Uri.fromFile(file));
this.finish();
super.startActivity(intent);
}
}
private File initFile() {
// holdVideoName= getIntent().getExtras().getString("vpath","");
//System.out.println("vpath is:"+vpath);
// File dir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES), "namefolder");
File dir = new File("/sdcard/test/");
if (!dir.exists() && !dir.mkdirs()) {
Log.wtf(TAG, "Failed to create storage directory: " + dir.getAbsolutePath());
this.file = null;
} else {
this.file = new File("/sdcard/test/"+getIntent().getExtras().getString("hold")+".mp4");
}
return this.file;
}
}
关于android 录像 - RuntimeException : stop failed，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/16917916/