我正在尝试编写一个简单的录像机，有时它可以正常工作，有时也不会。所以我把它全部剥离并重新开始，但这次几乎相同的代码我的HTC Desire HD和三星Galaxy手机都抛出了一些奇怪的错误。继承人的代码
public class VideoRecord extends Activity implements SurfaceHolder.Callback {
// Camera objects
private SurfaceView surfaceView;
private SurfaceHolder surfaceHolder;
private Camera camera;
private boolean previewRunning;
// Objects for recording
private MediaRecorder mediaRecorder;
// App state
private boolean recordingInMotion;
// Video files
private File folder;
// Message queue
private Handler handler;
// Android preferences
private SharedPreferences prefs;
private Resources res;
private TextView statusIndicator;
private Button btnRecord;
private boolean recording = false;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
res = getResources();
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
setContentView(R.layout.activity_videorecord);
surfaceView = (SurfaceView) findViewById(R.id.surface_camera);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
handler = new Handler();
prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
getElements();
setRecordButton();
}
private void getElements() {
btnRecord = (Button) findViewById(R.id.button_record);
}
private void setRecordButton() {
btnRecord.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (recording == false) {
startRecording();
} else {
stopRecording();
}
}
});
}
@Override
public void onResume() {
super.onResume();
}
@Override
public void onPause() {
super.onDestroy();
if (mediaRecorder != null) {
if (recordingInMotion) {
stopRecording();
}
mediaRecorder.release();
}
}
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
// Check camera isnt null for some reason
if (camera == null) {
return;
}
if (previewRunning) {
camera.stopPreview();
}
// Set parameters
Camera.Parameters p = camera.getParameters();
p.setPreviewSize(320, 240);
p.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
try {
camera.setParameters(p);
} catch (RuntimeException e) {
e.printStackTrace();
}
try {
camera.setPreviewDisplay(holder);
camera.startPreview();
previewRunning = true;
} catch (IOException e) {
e.printStackTrace();
}
}
public void surfaceCreated(SurfaceHolder holder) {
try {
camera = Camera.open();
} catch (RuntimeException e) {
e.printStackTrace();
camera = null;
}
if (camera != null) {
Camera.Parameters params = camera.getParameters();
camera.setParameters(params);
} else {
Toast.makeText(getApplicationContext(), "Camera not available!", Toast.LENGTH_LONG).show();
finish();
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
previewRunning = false;
if (camera != null) {
camera.stopPreview();
camera.release();
} else {
Log.e(TAG, "surfaceDestroyed: camera is null!");
}
}
public boolean startRecording() {
if (camera == null) {
Log.e(TAG, "startRecording: camera is null!");
return false;
}
try {
camera.unlock();
} catch (RuntimeException e) {
e.printStackTrace();
camera = null;
Log.e(TAG, "startRecording: unlock failed!");
return false;
}
mediaRecorder = new MediaRecorder();
mediaRecorder.setCamera(camera);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mediaRecorder.setOutputFile("/sdcard/temp.mp4");
CamcorderProfile mProfile = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);
mediaRecorder.setProfile(mProfile);
mediaRecorder.setVideoSize(mProfile.videoFrameWidth, mProfile.videoFrameHeight);
mediaRecorder.setPreviewDisplay(surfaceHolder.getSurface());
try {
mediaRecorder.prepare();
mediaRecorder.start();
return true;
} catch (IllegalStateException e) {
Log.e(TAG, "Illegal State Exception:" + e.getMessage());
e.printStackTrace();
return false;
} catch (IOException e) {
Log.e(TAG, "IOException:" + e.getMessage());
e.printStackTrace();
return false;
} catch (RuntimeException re) {
Log.e(TAG, "RuntimeException:" + re.getMessage());
re.printStackTrace();
return false;
}
}
public void stopRecording() {
mediaRecorder.stop();
camera.lock();
recordingInMotion = false;
}
}
当我点击记录时，它会轻微地工作，然后崩溃。好吧不会崩溃。基本上屏幕暂停，不再预览，然后把它扔掉。
06-30 21:11:23.660: ERROR/StagefrightRecorder(12174): Failed to set frame rate to 27 fps. The actual frame rate is 15
06-30 21:11:23.820: ERROR/HTC Acoustic(12174): cannot found indicated effect mode
06-30 21:11:23.830: ERROR/HTC Acoustic(12174): cannot found indicated effect mode
06-30 21:11:23.920: ERROR/QualcommCameraHardware(12174): frames in busy Q = 0
06-30 21:11:23.920: ERROR/QualcommCameraHardware(12174): frames in busy Q = 0 after deq and add to freeQ
06-30 21:11:23.920: ERROR/OMXCodec(12174): Buffer count/size less than minimum required
06-30 21:11:23.920: ERROR/OMXCodec(12174): [ 06-30 21:11:23.920 12174:0x2fa2 F/OMXCodec ]
06-30 21:11:23.920: ERROR/OMXCodec(12174): frameworks/base/media/libstagefright/OMXCodec.cpp:1859 err != OK
06-30 21:11:24.850: ERROR/Camera(12118): Error 100
06-30 21:11:26.530: ERROR/AudioService(1321): Media server died.
06-30 21:11:30.400: ERROR/HTC Acoustic(12204): ioctl ACOUSTIC_UPDATE_ADIE failed -1
06-30 21:11:30.730: ERROR/HTC Acoustic(12204): failed to open A2051 CSV files /system/etc/TPA2051_CFG.csv.
06-30 21:11:30.730: ERROR/AudioHardwareMSM7X30(12204): set_tpa2051_parameters fail
06-30 21:11:30.760: ERROR/HTC Acoustic(12204): (Original_Phone_REC,/system/etc/soundimage/Sound_Dualmic.txt)
06-30 21:11:30.770: ERROR/HTC Acoustic(12204): (Original_Phone_SPK,/system/etc/soundimage/Sound_Dualmic.txt)
06-30 21:11:30.780: ERROR/HTC Acoustic(12204): (Original_Phone,/system/etc/soundimage/Sound_Dualmic.txt)
06-30 21:11:30.790: ERROR/HTC Acoustic(12204): (Original,/system/etc/soundimage/Sound_Original.txt)
06-30 21:11:30.790: ERROR/HTC Acoustic(12204): (Original_SPK,/system/etc/soundimage/Sound_Original_SPK.txt)
06-30 21:11:30.790: ERROR/HTC Acoustic(12204): (dolby_a_spk,/system/etc/soundimage/Sound_Dolby_A_SPK.txt)
06-30 21:11:30.810: ERROR/HTC Acoustic(12204): (dolby_a_hp,/system/etc/soundimage/Sound_Dolby_A_HP.txt)
06-30 21:11:30.830: ERROR/HTC Acoustic(12204): (dolby_v_spk,/system/etc/soundimage/Sound_Dolby_V_SPK.txt)
06-30 21:11:30.860: ERROR/HTC Acoustic(12204): (dolby_v_hp,/system/etc/soundimage/Sound_Dolby_V_HP.txt)
06-30 21:11:30.870: ERROR/HTC Acoustic(12204): (Srs_a_hp,/system/etc/soundimage/Sound_SRS_A_HP.txt)
06-30 21:11:30.890: ERROR/HTC Acoustic(12204): (Srs_a_spk,/system/etc/soundimage/Sound_SRS_A_SPK.txt)
06-30 21:11:30.900: ERROR/HTC Acoustic(12204): (Srs_v_hp,/system/etc/soundimage/Sound_SRS_V_HP.txt)
06-30 21:11:30.920: ERROR/HTC Acoustic(12204): (Srs_v_spk,/system/etc/soundimage/Sound_SRS_V_SPK.txt)
06-30 21:11:30.930: ERROR/HTC Acoustic(12204): (Bass Booster,/system/etc/soundimage/Sound_Bass_Booster.txt)
06-30 21:11:30.930: ERROR/HTC Acoustic(12204): (Blues,/system/etc/soundimage/Sound_Blues.txt)
06-30 21:11:30.940: ERROR/HTC Acoustic(12204): (Classical,/system/etc/soundimage/Sound_Classical.txt)
06-30 21:11:30.950: ERROR/HTC Acoustic(12204): (Country,/system/etc/soundimage/Sound_Country.txt)
06-30 21:11:30.950: ERROR/HTC Acoustic(12204): (Jazz,/system/etc/soundimage/Sound_Jazz.txt)
06-30 21:11:30.960: ERROR/HTC Acoustic(12204): (Latin,/system/etc/soundimage/Sound_Latin.txt)
06-30 21:11:30.970: ERROR/HTC Acoustic(12204): (New age,/system/etc/soundimage/Sound_New_Age.txt)
06-30 21:11:30.970: ERROR/HTC Acoustic(12204): (Piano,/system/etc/soundimage/Sound_Piano.txt)
06-30 21:11:30.980: ERROR/HTC Acoustic(12204): (Pop,/system/etc/soundimage/Sound_Pop.txt)
06-30 21:11:30.990: ERROR/HTC Acoustic(12204): (R&B,/system/etc/soundimage/Sound_R_B.txt)
06-30 21:11:30.990: ERROR/HTC Acoustic(12204): (Rock,/system/etc/soundimage/Sound_Rock.txt)
06-30 21:11:31.000: ERROR/HTC Acoustic(12204): (Treble Booster,/system/etc/soundimage/Sound_Treble_Booster.txt)
06-30 21:11:31.010: ERROR/HTC Acoustic(12204): (Vocal Booster,/system/etc/soundimage/Sound_Vocal_Booster.txt)
06-30 21:11:31.020: ERROR/AudioPolicyManagerBase(12204): mSupportBacMic = 0
06-30 21:11:31.020: ERROR/TDAS Acoustic(12204): Fail to open /data/dolby/DM2_TDAS_CONFIG.csv
06-30 21:11:32.039: ERROR/AudioService(1321): Media server started.
真的不了解这个MediaRecorder。在我看来非常敏感。任何人都可以帮忙吗？拜托，我要疯了。