我在我的应用程序中使用自定义相机，这在果冻豆中很好用。现在三星Galaxy Tab OS更新后，自定义相机坏了。我从我的一位朋友那里收到了这份报告，我没有看到那款平板电脑。我收到了Carshylytics的崩溃报告表。
我的日志报告：
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.x.y/com.x.y.tools.EnregistrementVideoStackActivity}: java.lang.RuntimeException: Unable to initialize media recorder
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2053)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2154)
at android.app.ActivityThread.access$700(ActivityThread.java:146)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1260)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4949)
at java.lang.reflect.Method.invokeNative(Method.java)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1043)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:810)
at dalvik.system.NativeStart.main(NativeStart.java)
Caused by: java.lang.RuntimeException: Unable to initialize media recorder
at android.media.MediaRecorder.native_setup(MediaRecorder.java)
at android.media.MediaRecorder.<init>(MediaRecorder.java:121)
at com.x.y.tools.EnregistrementVideoStackActivity.<init>(EnregistrementVideoStackActivity.java:38)
at java.lang.Class.newInstanceImpl(Class.java)
at java.lang.Class.newInstance(Class.java:1319)
at android.app.Instrumentation.newActivity(Instrumentation.java:1068)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2044)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2154)
at android.app.ActivityThread.access$700(ActivityThread.java:146)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1260)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4949)
at java.lang.reflect.Method.invokeNative(Method.java)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1043)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:810)
at dalvik.system.NativeStart.main(NativeStart.java)
这个错误行是
public MediaRecorder mrec = new MediaRecorder();
为什么会有这样的想法？我该如何解决这个问题。我希望不需要相机代码。但是有人想看到我可以在这里发布的代码。
修改
我的EnregistrementVideoStackActivity类：
public class EnregistrementVideoStackActivity extends Activity implements
SurfaceHolder.Callback {
private SurfaceHolder surfaceHolder;
private SurfaceView surfaceView;
public MediaRecorder mrec = new MediaRecorder();
private Button startRecording = null;
private Button stopRecording = null;
File video;
private Camera mCamera;
private String output_path;
boolean isActivityRestarting = false;
Chronometer myChronometer;
Boolean recording = false;
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (recording == false) {
finish();
} else {
stopRecording();
}
return true;
}
return super.onKeyDown(keyCode, event);
}
@Override
protected void onDestroy() {
super.onDestroy();
}
@Override
public void onRestart() {
super.onRestart();
isActivityRestarting = true;
finish();
}
@Override
public void onCreate(Bundle savedInstanceState) {
if (isActivityRestarting) {
return;
}
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
/*getWindow().setFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON,
WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);*/
setContentView(R.layout.camera_surface);
Intent intent = getIntent();
output_path = intent.getStringExtra("path");
startRecording = (Button) findViewById(R.id.buttonstart);
stopRecording = (Button) findViewById(R.id.buttonstop);
try {
// This case can actually happen if the user opens and closes the
// camera too frequently.
// The problem is that we cannot really prevent this from happening
// as the user can easily
// get into a chain of activites and tries to escape using the back
// button.
// The most sensible solution would be to quit the entire EPostcard
// flow once the picture is sent.
mCamera = Camera.open();
} catch (Exception e) {
Toast.makeText(getApplicationContext(),
"Please restart device, camera error", Toast.LENGTH_LONG)
.show();
finish();
return;
}
surfaceView = (SurfaceView) findViewById(R.id.surface_camera);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
myChronometer = (Chronometer) findViewById(R.id.chronometer1);
startRecording.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
try {
startRecording();
myChronometer.setBase(SystemClock.elapsedRealtime());
myChronometer.start();
startRecording.setClickable(false);
} catch (Exception e) {
e.getMessage();
e.printStackTrace();
mrec.release();
}
}
});
stopRecording.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
try {
stopRecording();
myChronometer.stop();
Intent intent = getIntent();
intent.putExtra("gallery", "viewed");
setResult(RESULT_OK, intent);
} catch (Exception e) {
e.getMessage();
}
}
});
myChronometer
.setOnChronometerTickListener(new Chronometer.OnChronometerTickListener() {
public void onChronometerTick(Chronometer chronometer) {
long myElapsedMillis = SystemClock.elapsedRealtime()
- myChronometer.getBase();
if (myElapsedMillis >= 120000) {
Toast.makeText(getApplicationContext(),
"Maximum Video limit reached",
Toast.LENGTH_LONG).show();
stopRecording();
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add(0, 0, 0, "StartRecording");
menu.add(0, 1, 0, "StopRecording");
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case 0:
try {
startRecording();
} catch (Exception e) {
String message = e.getMessage();
Log.e(null, "Problem Start" + message);
mrec.release();
}
break;
case 1: // GoToAllNotes
mrec.stop();
mrec.release();
mrec = null;
break;
default:
break;
}
return super.onOptionsItemSelected(item);
}
protected void startRecording() throws IOException {
recording = true;
mrec = new MediaRecorder(); // Works well
mCamera.unlock();
mrec.setCamera(mCamera);
mrec.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mrec.setAudioSource(MediaRecorder.AudioSource.MIC);
mrec.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
mrec.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
mrec.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
int width = 320;
int height = 240;
try {
// Check what resolutions are supported by your camera
List<Size> sizes = params.getSupportedPictureSizes();
for (Size size : sizes) {
Log.e("TAG", "Available resolution: " + size.width + " "
+ size.height);
width = size.width;
height = size.height;
}
} catch (Exception e) {
e.printStackTrace();
}
mrec.setVideoFrameRate(30);
mrec.setVideoSize(width, height);
mrec.setVideoEncodingBitRate(1700000);
mrec.setPreviewDisplay(surfaceHolder.getSurface());
mrec.setOutputFile(output_path);
mrec.prepare();
mrec.start();
}
protected void stopRecording() {
try {
Log.e("stop recording", "Stop recording");
recording = false;
mrec.stop();
mrec.release();
mCamera.release();
// go out
Toast.makeText(getApplicationContext(),
"New Video Observation Saved", Toast.LENGTH_LONG).show();
} catch (Exception npe) {
npe.printStackTrace();
}
Intent intent = getIntent();
setResult(RESULT_OK, intent);
finish();
}
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
//
}
Parameters params;
public void surfaceCreated(SurfaceHolder holder) {
if (!isActivityRestarting) {
if (mCamera != null) {
params = mCamera.getParameters();
mCamera.setParameters(params);
} else {
Toast.makeText(getApplicationContext(),
"Camera not available!", Toast.LENGTH_LONG).show();
finish();
}
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
try {
if (mCamera != null) {
mCamera.stopPreview();
mCamera.release();
mCamera.setPreviewCallback(null);
mCamera = null;
}
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
protected void onPause() {
super.onPause();
if (recording == false) {
finish();
} else {
stopRecording();
}
}
}
答案 0 :(得分：0)
我收到错误因为没有设置视频大小。我解决了这个问题
int width = 320;
int height = 240;
try {
//get the available sizes of the video
List<Size> tmpList = getSupportedVideoSizes();
final List<Size> sizeList = new Vector<Size>();
// compare the apsect ratio of the candidate sizes against the
// real ratio
Double aspectRatio = (Double.valueOf(getWindowManager()
.getDefaultDisplay().getHeight()) / getWindowManager()
.getDefaultDisplay().getWidth());
for (int i = tmpList.size() - 1; i > 0; i--) {
Double tmpRatio = Double.valueOf(tmpList.get(i).height)
/ tmpList.get(i).width;
if (Math.abs(aspectRatio - tmpRatio) < .15) {
width = tmpList.get(i).width;
height = tmpList.get(i).height;
sizeList.add(tmpList.get(i));
}
}
if (EnableLog.LOG_TAG) {
Log.e("tmpList", tmpList + "*");
}
} catch (Exception e) {
e.printStackTrace();
}
mrec.setVideoSize(width, height);
public List<Size> getSupportedVideoSizes() {
if (params.getSupportedVideoSizes() != null) {
return params.getSupportedVideoSizes();
} else {
// Video sizes may be null, which indicates that all the supported
// preview sizes are supported for video recording.
return params.getSupportedPreviewSizes();
}
}