以編程方式使用Android拍攝多張照片？

我需要使用沒有預覽的照相機並拍攝多張照片。以編程方式使用Android拍攝多張照片？

我寫了我的代碼，我能夠拍攝一張照片，它可以正常工作。

但我無法處理做多次。因爲Camera Service的邏輯我嘗試了一種方法CreateCameraTakeShot，仍然沒有成功。

你能幫我解決嗎？

這是我的代碼;

public class ContinuingCallActivity extends Activity implements SurfaceHolder.Callback{ 

Camera camera; 
SurfaceView surfaceView; 
SurfaceHolder surfaceHolder; 
    FileOutputStream outStream; 


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

     //getWindow().setFormat(PixelFormat.UNKNOWN); 
     surfaceView = (SurfaceView)findViewById(R.id.surfaceView1); 
     surfaceHolder = surfaceView.getHolder(); 
     surfaceHolder.addCallback(this); 
     surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 


     // for(int i=0;i<10;i++) 
     //{ 
      mHandler.postDelayed(mLaunchTask, 1000); 
     //} 
} 

    Handler mHandler = new Handler(); 


    private Runnable mLaunchTask = new Runnable() { 
     @Override 
     public void run() { 


      camera.takePicture(null,myPictureCallback_RAW, myPictureCallback_JPG); 
      //createCameraTakeShot(); 


     } 
    }; 


    ShutterCallback myShutterCallback = new ShutterCallback(){ 

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

}}; 

PictureCallback myPictureCallback_RAW = new PictureCallback(){ 

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

}}; 

PictureCallback myPictureCallback_JPG = new PictureCallback(){ 

@Override 
public void onPictureTaken(byte[] arg0, Camera arg1) { 
    // TODO Auto-generated method stub 
    Bitmap bitmapPicture 
    = BitmapFactory.decodeByteArray(arg0, 0, arg0.length); 

    ByteArrayOutputStream bytes = new ByteArrayOutputStream(); 
    bitmapPicture.compress(Bitmap.CompressFormat.JPEG, 40, bytes); 

final String dir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + "/MySight/"; 
    File newdir = new File(dir); 
    newdir.mkdirs(); 

Date d = new Date(); 
    CharSequence dateOfShot = DateFormat.format("dd-MM-yy hh:mm:ss", d.getTime()); 

    String file = dir+dateOfShot+".jpg"; 
    File newfile = new File(file); 

try { 
     newfile.createNewFile(); 
    } catch (IOException e1) { 
     // TODO Auto-generated catch block 
     e1.printStackTrace(); 
    } 

try { 
    outStream = new FileOutputStream(newfile); 
    outStream.write(bytes.toByteArray()); 
    outStream.close(); 
    Log.d("Log", "onPictureTaken - wrote bytes: " + arg0.length); 
} catch (FileNotFoundException e) { 
    e.printStackTrace(); 
} catch (IOException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
} 

}}; 


public void createCameraTakeShot() 
{ 
camera = Camera.open(); 

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

camera.takePicture(null,myPictureCallback_RAW, myPictureCallback_JPG); 

camera.stopPreview(); 


} 

@Override 
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 
    e.printStackTrace(); 
    } 
} 

} 

@Override 
public void surfaceCreated(SurfaceHolder holder) { 
// TODO Auto-generated method stub 
camera = Camera.open(); 
} 

@Override 
public void surfaceDestroyed(SurfaceHolder holder) { 
// TODO Auto-generated method stub 

camera.stopPreview(); 
//camera.release(); 
//camera = null; 
previewing = false; 
} 
}

來源

2013-11-03 erdemgc

您可以使用計時器任務insted的處理程序進行拍照prodically

public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     surfaceView = (SurfaceView)findViewById(R.id.surfaceView1); 
     surfaceHolder = surfaceView.getHolder(); 
     surfaceHolder.addCallback(this); 
     surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
     MyTimerTask myTask = new MyTimerTask(); 
     Timer myTimer = new Timer(); 

     myTimer.schedule(myTask, 1000, 1000);   

} 

class MyTimerTask extends TimerTask { 
     public void run() { 
      // ERROR 
     camera.takePicture(null,myPictureCallback_RAW, myPictureCallback_JPG); 
     } 
    } 



ShutterCallback myShutterCallback = new ShutterCallback(){ 

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

}}; 

PictureCallback myPictureCallback_RAW = new PictureCallback(){ 

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

}}; 

PictureCallback myPictureCallback_JPG = new PictureCallback(){ 

@Override 
public void onPictureTaken(byte[] arg0, Camera arg1) { 
    // TODO Auto-generated method stub 
    Bitmap bitmapPicture 
    = BitmapFactory.decodeByteArray(arg0, 0, arg0.length); 

    ByteArrayOutputStream bytes = new ByteArrayOutputStream(); 
    bitmapPicture.compress(Bitmap.CompressFormat.JPEG, 40, bytes); 

final String dir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + "/MySight/"; 
    File newdir = new File(dir); 
    newdir.mkdirs(); 

Date d = new Date(); 
    CharSequence dateOfShot = DateFormat.format("dd-MM-yy hh:mm:ss", d.getTime()); 

    String file = dir+dateOfShot+".jpg"; 
    File newfile = new File(file); 

try { 
     newfile.createNewFile(); 
    } catch (IOException e1) { 
     // TODO Auto-generated catch block 
     e1.printStackTrace(); 
    } 

try { 
    outStream = new FileOutputStream(newfile); 
    outStream.write(bytes.toByteArray()); 
    outStream.close(); 
    Log.d("Log", "onPictureTaken - wrote bytes: " + arg0.length); 
} catch (FileNotFoundException e) { 
    e.printStackTrace(); 
} catch (IOException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
} 

}}; 


public void createCameraTakeShot() 
{ 
camera = Camera.open(); 

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

camera.takePicture(null,myPictureCallback_RAW, myPictureCallback_JPG); 


} 

@Override 
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 
    e.printStackTrace(); 
    } 
} 

} 

@Override 
public void surfaceCreated(SurfaceHolder holder) { 
// TODO Auto-generated method stub 
camera = Camera.open(); 
} 

@Override 
public void surfaceDestroyed(SurfaceHolder holder) { 
// TODO Auto-generated method stub 

camera.stopPreview(); 
//camera.release(); 
//camera = null; 
previewing = false; 
} 
}

來源

2013-11-03 08:48:06 Hardik

我試過，但還是同樣的異常我正在11月11日至3日：32：15.476：E/AndroidRuntime（7728）：java.lang.RuntimeException：takePicture失敗 – erdemgc

我編輯我的答案見變化。我刪除了camera.stopPreview（）;現在嘗試 – Hardik

請確保您已在anroidmanifiest.xml中授予使用相機的所有權限 – Hardik

以編程方式使用Android拍攝多張照片？

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