Android给View设置margin值

1.如果该View的父控件为RelativeLayout，设置margin如下：

ImageView image = (ImageView) findViewById(.main_image);
 lp = new (());
(50, 100, 0, 0);
(lp);

如果父控件为LinearLayout同上，将RelativeLayout换成LinearLayout即可

2.如果该View就为最外层的LinearLayout，设置margin如下：

 params = new (.MATCH_PARENT, .MATCH_PARENT);
(4, 0, 4, 0);
LinearLayout ll = (.ll_item);
(params);