- RelativeLayout relativeLayout= new RelativeLayout(this);
- RelativeLayout.LayoutParams rlp=new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,RelativeLayout.LayoutParams.WRAP_CONTENT);
- rlp.addRule(RelativeLayout.CENTER_IN_PARENT);
- relativeLayout.addView(progressBar,rlp);
Android 代码设置RelativeLayout元素居中
原文：https://www.cnblogs.com/Free-Thinker/p/8919733.html
