//開啟照相機
    private void start_camera(){
    	//Specify the path of the captured image
    	String strImage = Environment.getExternalStorageDirectory()+"/DCIM/AMAS";
    	File myImage = new File(strImage, Calendar.getInstance().getTime()+".jpg");
    	Uri uriMyImage = Uri.fromFile(myImage);
    	Log.e("FILE_PATH", uriMyImage.toString());
    	Intent intent_camera = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
    	intent_camera.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, uriMyImage);
        startActivityForResult(intent_camera, OPEN_CAMREA);
    }