代码中设置控件的centerInParent

//转载一个布局文件，要向这个布局汇总动态添加一个buttonRelativeLayout relativeLayout（RelativeLayout）getLayoutInflater().inflate(R.layout.main,null);//装载要动态添加的按钮布局Button button = (Button)getLayoutInflater().inflate(R.layout.button,null);//创建一个LayoutParams对象RelativeLayoutLayoutParamslayoutParams= new RelativeLayout。LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,ViewGroup.LayoutParams.WRAP_CONTENT);layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT,RelativeLayout.TRUE);button.setLayoutParams(layoutParams);relativeLayout.addView(button);