アンドロイドデバイスの動きを検出する方法

アンドロイドusingCamera.PreviewCallbackでモーションディテクタを作成し、2つの画像を比較したいと思います。お願いします。もしaccound配向に取るhaevためIsengActivityアクティビティがSurfaceHolder.Callback、Camera.PreviewCallback、PictureCallback {アンドロイドデバイスの動きを検出する方法

Camera kamera; 
SurfaceHolder surface; 
SurfaceView kameraview; 

public byte dataOld[]; 


public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); 
    kameraview =(SurfaceView) findViewById(R.id. kameraku); 
    surface = kameraview.getHolder(); 
    surface.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
    surface.addCallback(this); 



} 


@Override 
public void onPreviewFrame(byte[] data, Camera kamera) { 

    if(data.length ==0) return; 

    if(dataOld.length==0) 
     data=dataOld; 

    int Isdiferent=0; 

    int treshold =50; 
    for (int x=0; x<data.length; x=+5) 
    { 
     if(Math.abs(data[x] - dataOld[x]) <= treshold) 
     { 
      Isdiferent +=1; 
     } 

     float precentage = Isdiferent/data.length; 
     if (precentage > 20) 
     { 

     kamera.takePicture(null,null,this); 
     } 

    } 
} 


@Override 
public void surfaceChanged(SurfaceHolder holder, int format, int h, int w) { 
    kamera.startPreview(); 
} 


@Override 
public void surfaceCreated(SurfaceHolder holder) { 
    kamera=Camera.open(); 

    try 

    { 
     Camera.Parameters parameter = kamera.getParameters(); 
     if(this.getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE) 
     { 
      parameter.set("orientation","portrait"); 
      kamera.setDisplayOrientation(90); 
     } 

     else 
     { 
      parameter.set("orientation","landscape"); 
      kamera.setDisplayOrientation(0); 
     } 

     kamera.setParameters(parameter); 
     kamera.setPreviewDisplay(holder); 
    } 

    catch(IOException e) 
    { 
    kamera.release(); 

    } 
    kamera.startPreview(); 
} 


@Override 
public void surfaceDestroyed(SurfaceHolder holder) { 
    kamera.stopPreview(); 
    kamera.release(); 

} 


@Override 
public void onPictureTaken(byte[] data, Camera kamera) { 

    // TODO Auto-generated method stub 
      Uri imageFileUri = getContentResolver().insert(Media.EXTERNAL_CONTENT_URI,new ContentValues()); 
      try 

      { 
       /*String sdcardStorage = Environment.getExternalStorageDirectory().toString(); 
       imageFileUri=Uri.parse(sdcardStorage + "/HeryMD/Test.jpg");*/ 

       String sdcardStorage = Environment.getExternalStorageDirectory().toString(); 
       File f = new File(sdcardStorage + "/HeryMD/Test.jpg"); 
       OutputStream os = new FileOutputStream(f); 
       os.write(data); 
       os.flush(); 
       os.close(); 
      } catch(FileNotFoundException e) 
      { 
       Toast t = Toast.makeText(this,e.getMessage(), Toast.LENGTH_SHORT); 
       t.show(); 
      } 


      catch(IOException e) 
      { 
       Toast t = Toast.makeText(this,e.getMessage(), Toast.LENGTH_SHORT); 
       t.show(); 
      } 

      kamera.startPreview(); 
}

}

出典

2012-03-22 Hery Irawan