【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);
}