首先需要生成一个LayoutParams对象@H_502_1@

然后执行一个重要的方法 addRule(属性,值);@H_502_1@

控件调用setLayoutParams，传入参数为这个LayoutParams对象@H_502_1@

示例：@H_502_1@

if(flag == TextView.VISIBLE){
			RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
			layoutParams.addRule(RelativeLayout.BELOW,R.id.labor3);
			returnBtn.setLayoutParams(layoutParams);
		}