AlertDialog的样式修改

一:控制Dialog 的背景方法：
1.定义一个无背景主题主题

2.创建Dialog

dialog = new Dialog(this,R.style.dialog);  
dialog.setContentView(R.layout.dialog_loading);  
or:
dialog = new Dialog(this,R.style.NobackDialog);  
LayoutInflater mInflater = LayoutInflater.from(this);
View dialogProcessBar = mInflater.inflate(R.layout.dialog_loading,null);  
dialog.setView(dialogProcessBar,0, 0, 0, 0);

二:控制Dialog 以及内部控件的背景方法：

dialog = new Dialog(this,R.style.dialog);
WindowManager.LayoutParams lp=dialog.getWindow().getAttributes();
// 模糊度getWindow().setFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND, WindowManager.LayoutParams.FLAG_BLUR_BEHIND); dialog.getWindow().setAttributes(lp);
lp.alpha=0.5f;（0.0-1.0）//透明度，黑暗度为lp.dimAmount=1.0f;
 

三:去掉边框、title 等参数