視頻錄製只適用於我的設備，但不適用於其他設備

Question

我將我的應用上傳到谷歌播放，我注意到視頻錄製在其他設備上無法正常工作，在我的設備上工作正常。 所以我做了一個調試，我發現我得到一個錯誤信息「無法創建目錄」，我意識到這是因爲設備沒有包含SD卡。 我把我的SD卡移動到其他設備，似乎相機開始記錄，但是當我點擊停止應用程序崩潰。

我的設備的Android 4.0.3 LG OPTIMUS（工作）

上HTC 4.0.3（不行）

i find this , this could be helpful

here my project

Which is based on Google's training

主要活動：

import java.io.File; 
import java.io.IOException; 
import java.text.SimpleDateFormat; 
import java.util.Date; 
import android.media.CamcorderProfile; 
import android.media.MediaRecorder; 
import android.net.Uri; 
import android.os.Bundle; 
import android.os.Debug; 
import android.os.Environment; 
import android.app.Activity; 
import android.content.Context; 
import android.content.Intent; 
import android.content.pm.PackageManager; 
import android.hardware.Camera; 
import android.util.Log; 
import android.view.Menu; 
import android.view.SurfaceHolder.Callback; 
import android.view.SurfaceView; 
import android.view.View; 
import android.widget.Button; 
import android.widget.FrameLayout; 
import android.widget.MediaController; 
import android.widget.TextView; 
import android.widget.Toast; 
import android.widget.VideoView; 

public class MainActivity extends Activity { 



    private Button initBtn = null ; 
    private Button startBtn = null ; 
    private Button stopBtn = null ; 
    private Button playBtn = null ; 
    private Button stopPlayBtn = null ; 
    private TextView recordingMSG = null ; 
    private VideoView videoView = null ; 


    static String TAG = "MainActivity" ; 
    private String outputFileName ; 
    private Camera mCamera; 
    private SurfaceView mPreview; 
    private MediaRecorder mMediaRecorder; 
    public static final int MEDIA_TYPE_VIDEO = 2; 
    public static final int MEDIA_TYPE_IMAGE = 1; 
    private boolean isRecording = false; 
    private FrameLayout preview = null ; 



    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 



     initBtn = (Button) findViewById(R.id.initBtn) ; 
     startBtn = (Button) findViewById(R.id.startBtn) ; 
     stopBtn = (Button) findViewById(R.id.stopBtn) ; 
     playBtn = (Button) findViewById(R.id.playBtn) ; 
     stopPlayBtn = (Button) findViewById(R.id.stopPlayBtn) ; 
     recordingMSG = (TextView) findViewById(R.id.recordingMSG) ; 



     if (!checkCameraHardware(this)){ 
     Toast.makeText(MainActivity.this, "not recognize device camera", Toast.LENGTH_SHORT).show(); //chack syntax 
     } 

     //play button can not play in the begin 
     playBtn.setEnabled(false); 



     Log.d(TAG,"end creat"); 

    } 



    //if clicked on one of the button 
    public void ButtonTapped(View view){ 
     int id = view.getId(); 
     if (id == R.id.initBtn) { 
      Log.d(TAG, "idan initialize button") ; 
      initRecorder(); 
     } else if (id == R.id.startBtn) { 
      beginRecording(); 
     } else if (id == R.id.stopBtn) { 
      stopRecording(); 
     } else if (id == R.id.playBtn) { 
      playRecording(); 
     } else if (id == R.id.stopPlayBtn) { 
      stopPlayback(); 
     }} 





    private void stopPlayback() { 


    } 



    private void playRecording() {  

    PuseAndRelease(); //try  
    Intent intent = new Intent(this, StartPlay.class); 
    intent.putExtra("outputFileName",outputFileName); 
    startActivity(intent); 
    finish(); 


    StartAndContinuCamera(); //try 


    } 



    private void stopRecording() { 
     // TODO Auto-generated method stub 

    } 



    private void beginRecording() { 


     if (isRecording) { 
      // stop recording and release camera 
      mMediaRecorder.stop(); // stop the recording 
      releaseMediaRecorder(); // release the MediaRecorder object 
      mCamera.lock();   // take camera access back from MediaRecorder 

      // inform the user that recording has stopped 
      //setCaptureButtonText("Capture"); 
      startBtn.setText("start"); 
      isRecording = false; 
      playBtn.setEnabled(true); 
     } else { 
      // initialize video camera 
      if (prepareVideoRecorder()) { 
       // Camera is available and unlocked, MediaRecorder is prepared, 
       // now you can start recording 
       mMediaRecorder.start(); 
       Log.d(TAG,"MEDIA RECORDER START"); 

       // inform the user that recording has started 
       //setCaptureButtonText("Stop"); 
       startBtn.setText("stop"); 
       isRecording = true; 
      } else { 
       // prepare didn't work, release the camera 
       releaseMediaRecorder(); 
       // inform user 
      } 
     } 



    } 



    private void initRecorder() { 


    } 











    private boolean prepareVideoRecorder(){ 

     //mCamera = getCameraInstance(); 
     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) 
     mMediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH)); 




     // Step 4: Set output file 
     mMediaRecorder.setOutputFile(getOutputMediaFile(MEDIA_TYPE_VIDEO).toString()); 
     outputFileName = getOutputMediaFile(MEDIA_TYPE_VIDEO).toString() ; 


     // Step 5: Set the preview output 
     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 static Uri getOutputMediaFileUri(int type){ 
      return Uri.fromFile(getOutputMediaFile(type)); 
    } 

    /** Create a File for saving an image or video */ 
    private static File getOutputMediaFile(int type){ 
     // To be safe, you should check that the SDCard is mounted 
     // using Environment.getExternalStorageState() before doing this. 

     File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
        Environment.DIRECTORY_PICTURES), "MyCameraApp"); 
     // This location works best if you want the created images to be shared 
     // between applications and persist after your app has been uninstalled. 

     // Create the storage directory if it does not exist 
     if (! mediaStorageDir.exists()){ 
      if (! mediaStorageDir.mkdirs()){ 
       Log.d("MyCameraApp", "failed to create directory"); 
       return null; 
      } 
     } 

     // Create a media file name 
     String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date()); 
     File mediaFile; 
     if (type == MEDIA_TYPE_IMAGE){ 
      mediaFile = new File(mediaStorageDir.getPath() + File.separator + 
      "IMG_"+ timeStamp + ".jpg"); 
     } else if(type == MEDIA_TYPE_VIDEO) { 
      mediaFile = new File(mediaStorageDir.getPath() + File.separator + 
      "VID_"+ timeStamp + ".mp4"); 
     } else { 
      return null; 
     } 

     return mediaFile; 
    } 








    @Override 
     protected void onPause() { 
     super.onPause(); 
     PuseAndRelease(); 
     } 

     @Override 
    protected void onResume() { 
     // TODO Auto-generated method stub 
     super.onResume(); 

     StartAndContinuCamera(); 

    } 




     @Override 
     protected void onDestroy() { 
      // TODO Auto-generated method stub 
      super.onDestroy(); 



     } 




     public void StartAndContinuCamera(){ 


      // Create an instance of Camera 
      mCamera = getCameraInstance(); 
      Log.d(TAG,"camera on resume"+ " " + mCamera); 
      // Create our Preview view and set it as the content of our activity. 
      mPreview = new CameraPreview(this, mCamera); 
      FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview); 
      preview.addView(mPreview); 

      Log.d(TAG,"camera on resume"+ " " + mCamera); 

     } 
















     public void PuseAndRelease(){ 

      releaseMediaRecorder();  // if you are using MediaRecorder, release it first 
      releaseCamera(); // release the camera immediately on pause event 
      Log.d(TAG,"camera onpause" + mCamera); 

     } 










     private void releaseMediaRecorder(){ 
      if (mMediaRecorder != null) { 
       mMediaRecorder.reset(); // clear recorder configuration 
       mMediaRecorder.release(); // release the recorder object 
       Log.d(TAG,"release the recorder") ; 
       mMediaRecorder = null; 
       mCamera.lock();   // lock camera for later use 
       Log.d(TAG," CAMERA lock") ; 
      } 
     } 

     private void releaseCamera(){ 
      if (mCamera != null){ 
       mCamera.setPreviewCallback(null); 

       mPreview.getHolder().removeCallback((Callback) mPreview);//try 
       mCamera.release();  // release the camera for other applications 

       Log.d(TAG,"camera release"); 
       mCamera = null; 
      } 
     } 








     /** A safe way to get an instance of the Camera object. */ 
     public static Camera getCameraInstance(){ 
      Camera c = null; 
      try { 
       c = Camera.open(); // attempt to get a Camera instance 
      } 
      catch (Exception e){ 
       // Camera is not available (in use or does not exist) 
      } 
      return c; // returns null if camera is unavailable 
     } 







    private boolean checkCameraHardware(Context context) { 
     Log.d(TAG,"test") ; 
     if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA)){ 
      // this device has a camera 
      return true; 
     } else { 
      // no camera on this device 
      return false; 
     } 
    } 

















} 

的logcat：

05-31 13:34:04.449: V/MediaRecorderJNI(19487): stop 
05-31 13:34:04.449: V/MediaRecorderJNI(19487): getMediaRecorder E 
05-31 13:34:04.499: V/MediaRecorderJNI(19487): JNIMediaRecorderListener::notify 
05-31 13:34:04.499: V/MediaRecorderJNI(19487): notify msgType 0x65, ext1 0x100003E8 
05-31 13:34:04.659: E/MediaRecorder(19487): stop failed: -1007 
05-31 13:34:04.659: V/MediaRecorderJNI(19487): process_media_recorder_call 
05-31 13:34:04.659: D/AndroidRuntime(19487): Shutting down VM 
05-31 13:34:04.659: W/dalvikvm(19487): threadid=1: thread exiting with uncaught exception (group=0x40af7228) 
05-31 13:34:04.669: E/AndroidRuntime(19487): FATAL EXCEPTION: main 
05-31 13:34:04.669: E/AndroidRuntime(19487): java.lang.IllegalStateException: Could not execute method of the activity 
05-31 13:34:04.669: E/AndroidRuntime(19487): at android.view.View$1.onClick(View.java:3071) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at android.view.View.performClick(View.java:3538) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at android.view.View$PerformClick.run(View.java:14330) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at android.os.Handler.handleCallback(Handler.java:608) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at android.os.Handler.dispatchMessage(Handler.java:92) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at android.os.Looper.loop(Looper.java:156) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at android.app.ActivityThread.main(ActivityThread.java:4987) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at java.lang.reflect.Method.invokeNative(Native Method) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at java.lang.reflect.Method.invoke(Method.java:511) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at dalvik.system.NativeStart.main(Native Method) 
05-31 13:34:04.669: E/AndroidRuntime(19487): Caused by: java.lang.reflect.InvocationTargetException 
05-31 13:34:04.669: E/AndroidRuntime(19487): at java.lang.reflect.Method.invokeNative(Native Method) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at java.lang.reflect.Method.invoke(Method.java:511) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at android.view.View$1.onClick(View.java:3066) 
05-31 13:34:04.669: E/AndroidRuntime(19487): ... 11 more 
05-31 13:34:04.669: E/AndroidRuntime(19487): Caused by: java.lang.RuntimeException: stop failed. 
05-31 13:34:04.669: E/AndroidRuntime(19487): at android.media.MediaRecorder.stop(Native Method) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at com.example.your_voice.MainActivity.beginRecording(MainActivity.java:141) 
05-31 13:34:04.669: E/AndroidRuntime(19487): at com.example.your_voice.MainActivity.ButtonTapped(MainActivity.java:93) 
05-31 13:34:04.669: E/AndroidRuntime(19487): ... 14 more 

Answer 1

您必須預覽的大小是一樣的相機輪廓 在CameraPreview.surfaceCreated改成這樣：

Log.d(TAG, "surfaceCreated camera id" + mCamera); 

try { 
    CamcorderProfile profile = CamcorderProfile.get(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()); 
}