Androidカメラを正しく閉じる

Question

これは数週間にわたって私に数回起こっていて、私はそれを修正する方法を理解できません。基本的に私のアプリはカメラを使用していますが、アプリでカメラを使っていくつかのことをすると、強制的に閉じてしまい、他のアプリや携帯電話のデフォルトカメラでも使用できなくなります。

これを修正する唯一の方法は、電話を再起動することだとわかりました。

私は私が

camera.release();

camera = null;

を呼び出す必要があります。しかし、私はまだ近い力の誤差は時々、ちょうど取るために誰かのためにそれが可能である取得理解し、これまでに読んだものから、おそらく私はどこかでcamera.release();が足りなくなっています。

public class AndroidCamera extends Activity implements SurfaceHolder.Callback{ 

Camera camera; 
SurfaceView surfaceView; 
SurfaceHolder surfaceHolder; 
boolean previewing = false; 
LayoutInflater controlInflater = null; 

final int RESULT_SAVEIMAGE = 0; 

/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 



    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); 

    getWindow().setFormat(PixelFormat.UNKNOWN); 
    surfaceView = (SurfaceView)findViewById(R.id.camerapreview); 
    surfaceHolder = surfaceView.getHolder(); 
    surfaceHolder.addCallback(this); 
    surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 

    controlInflater = LayoutInflater.from(getBaseContext()); 
    View viewControl = controlInflater.inflate(R.layout.control, null); 
    LayoutParams layoutParamsControl 
     = new LayoutParams(LayoutParams.FILL_PARENT, 
     LayoutParams.FILL_PARENT); 
    this.addContentView(viewControl, layoutParamsControl); 

    Button buttonTakePicture = (Button)findViewById(R.id.takepicture); 
    buttonTakePicture.setOnClickListener(new Button.OnClickListener(){ 

     public void onClick(View arg0) { 
      // TODO Auto-generated method stub 
      camera.takePicture(myShutterCallback, 
        myPictureCallback_RAW, myPictureCallback_JPG); 


     }}); 

} 

ShutterCallback myShutterCallback = new ShutterCallback(){ 

    public void onShutter() { 
     // TODO Auto-generated method stub 

    }}; 

PictureCallback myPictureCallback_RAW = new PictureCallback(){ 

    public void onPictureTaken(byte[] arg0, Camera arg1) { 
     // TODO Auto-generated method stub 

    }}; 

PictureCallback myPictureCallback_JPG = new PictureCallback(){ 

    public void onPictureTaken(byte[] arg0, Camera arg1) { 
     // TODO Auto-generated method stub 
     /*Bitmap bitmapPicture 
      = BitmapFactory.decodeByteArray(arg0, 0, arg0.length); */ 
     int imageNum = 0; 
     Intent imageIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 
     File imagesFolder = new File(Environment.getExternalStorageDirectory(), "Punch"); 
     imagesFolder.mkdirs(); // <---- 
     String fileName = "image_" + String.valueOf(imageNum) + ".jpg"; 
     File output = new File(imagesFolder, fileName); 
     while (output.exists()){ 
      imageNum++; 
      fileName = "image_" + String.valueOf(imageNum) + ".jpg"; 
      output = new File(imagesFolder, fileName); 
     } 

     Uri uriSavedImage = Uri.fromFile(output); 
     imageIntent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage); 


     OutputStream imageFileOS; 
     try { 
      imageFileOS = getContentResolver().openOutputStream(uriSavedImage); 
      imageFileOS.write(arg0); 
      imageFileOS.flush(); 
      imageFileOS.close(); 

      Toast.makeText(AndroidCamera.this, 
        "Image saved", 
        Toast.LENGTH_LONG).show(); 

     } catch (FileNotFoundException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     Intent intent = new Intent(getBaseContext(), Punch.class); 
     intent.putExtra("filepath",uriSavedImage.toString()); 
     //just using a request code of zero 
     int request=0; 
     startActivityForResult(intent,request); 
    }}; 

public void surfaceChanged(SurfaceHolder holder, int format, int width, 
     int height) { 
    // TODO Auto-generated method stub 
    if(previewing){ 
     camera.stopPreview(); 
     previewing = false; 
    } 

    if (camera != null){ 
     try { 
      camera.setPreviewDisplay(surfaceHolder); 
      camera.startPreview(); 
      previewing = true; 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      camera.release(); 
      e.printStackTrace(); 
     } 
    } 
} 

public void surfaceCreated(SurfaceHolder holder) { 
    // TODO Auto-generated method stub 

    camera = Camera.open(); 
    try { 
      Camera.Parameters parameters = camera.getParameters(); 
      if (this.getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE) { 
       // This is an undocumented although widely known feature 
       parameters.set("orientation", "portrait"); 
       // For Android 2.2 and above 
       camera.setDisplayOrientation(90); 
       // Uncomment for Android 2.0 and above 
       parameters.setRotation(90); 
      } else { 
       // This is an undocumented although widely known feature 
       parameters.set("orientation", "landscape"); 
       // For Android 2.2 and above 
       camera.setDisplayOrientation(0); 
       // Uncomment for Android 2.0 and above 
       parameters.setRotation(0); 
      } 
      camera.setParameters(parameters); 
      camera.setPreviewDisplay(holder); 
     } catch (IOException exception) { 
     camera.release(); 


     } 
     camera.startPreview(); 

    } 


public void surfaceDestroyed(SurfaceHolder holder) { 
    // TODO Auto-generated method stub 
    if(previewing && camera != null) { 
     if(camera!=null) { 
      camera.stopPreview(); 
      camera.release(); 
      camera = null; 
     } 
     previewing = false; 
    } 
} 
} 

logcatが多いが、私はアプリの残りの部分が実行されないようにカメラの力が私に閉じているためだと思う（私を与えた。

01-03 14:59:17.835: D/AndroidRuntime(16531): Shutting down VM

01-03 14:59:17.835: W/dalvikvm(16531): threadid=1: thread exiting with uncaught exception (group=0x4001d5a0)

01-03 14:59:17.845: E/AndroidRuntime(16531): FATAL EXCEPTION: main

01-03 14:59:17.845: E/AndroidRuntime(16531): java.lang.RuntimeException: Fail to connect to camera service

Answer 1

私は今何がカメラを使用することはできません、私は書いているアプリは、カメラを解放するために取得する前にクラッシュした非常に同様の問題が生じていますonPause（）イベント

@Override 
protected void onPause() 
{ 
    super.onPause(); 
    if (camera != null) { 
     camera.stopPreview(); 
     camera.release(); 
     camera = null; 
    } 
}