在Android中持续移动图片框

Question

我被困了，任何人都可以帮助我。我希望在Android开发中使图像按钮随时间不断移动。 每当我尝试运行它时，我的应用程序都会崩溃

这是我的代码：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    Timer timer=new Timer();
    class UpdatePosition extends TimerTask{
        ImageButton move=(ImageButton) findViewById(R.id.car);
        public void run(){
            RelativeLayout.LayoutParams mParams=(RelativeLayout.LayoutParams) move.getLayoutParams();
            mParams.leftMargin += 1;
            move.setLayoutParams(mParams);
        }
    }
    TimerTask UpdateImage =new UpdatePosition();
    timer.scheduleAtFixedRate(UpdateImage,0,1000);


}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

}

提前谢谢