android 动态设置布局

1.动态设置RelativeLayout的布局
  // 根据不同的分辨率图片的大小
public android.widget.RelativeLayout.LayoutParams getParams(int screenWidth, Button btnRight) {
android.widget.RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) btnRight.getLayoutParams();
params.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
if(screenWidth > 1000 ) {
params.width = 78;
params.height = 64;
} else if(screenWidth > 480){
params.width = 60;
params.height = 49;
}else {
params.width = 40;
params.height = 33;
}
              //  Scrollparams.topMargin = 0;
              //[size=medium][/size]  Scrollparams.bottomMargin = 0;
return params;
}