【android】代码改变ImageButton的位置

public static void setLayout(View view,int x,int y)
{
    ViewGroup.MarginLayoutParams margin=new ViewGroup.MarginLayoutParams(view.getLayoutParams());
    //margin.setMargins(x,y, x+margin.width, y+margin.height);
 Log.d("xy",""+margin.width+" "+margin.height);
 margin.setMargins(x,y, 0, 0);
 RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(margin);
 view.setLayoutParams(layoutParams);
}