使用意图在Android中使用Camera

我使用以下代码使用相机使用意图.
在意图的参数我通过 android.provider.MediaStore.ACTION_IMAGE_CAPTURE.
可以打开相机.
但问题是它意外停止.
问题是它给OnActivityResults带来空指针异常.
我使用了以下代码：

public class demo extends Activity {

Button ButtonClick;
int CAMERA_PIC_REQUEST = 2; 
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    ButtonClick =(Button) findViewById(R.id.Camera);
    ButtonClick.setonClickListener(new OnClickListener (){
        @Override
        public void onClick(View view)
        {
            Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            // request code

            startActivityForResult(cameraIntent,CAMERA_PIC_REQUEST);

        }
    });

}

@Override
protected void onActivityResult(int requestCode,int resultCode,Intent data) 
{
    if( requestCode == CAMERA_PIC_REQUEST)
    {
    //  data.getExtras()
        Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
        ImageView image =(ImageView) findViewById(R.id.PhotoCaptured);
        image.setimageBitmap(thumbnail);
    }
    else 
    {
        Toast.makeText(demo.this,"Picture NOt taken",Toast.LENGTH_LONG);
    }
    super.onActivityResult(requestCode,resultCode,data);
}
}

任何人都可以帮我解决这个问题吗？

解决方法

尝试请求代码1337.

startActivityForResult(cameraIntent,1337);