摘要：
[java]viewplaincopyRelativeLayoutrelativeLaylay=newRelativeLlayout（此）；[java]viewplaincopyRelativeLayout.LayoutParamsrlp=newRelativeLlayout.Layout参数（RelativeLLayout.LayoutParams.WRAP_CONTENT，关系
[java]view plaincopy
- RelativeLayout relativeLayout= new RelativeLayout(this);
[java]view plaincopy
- RelativeLayout.LayoutParams rlp=new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,RelativeLayout.LayoutParams.WRAP_CONTENT);
- rlp.addRule(RelativeLayout.CENTER_IN_PARENT);//addRule参数对应RelativeLayout XML布局的属性
- relativeLayout.addView(progressBar,rlp);