学步园

<style name="FullScreenDialog" parent="android:style/Theme.Dialog">
    <item name="android:backgroundDimAmount">0.8</item>
    <item name="android:backgroundDimEnabled">true</item>
    <item name="android:windowFrame">@null</item>
    <item name="android:windowFullscreen">true</item>
    <item name="android:windowNoTitle">true</item>
    <item name="android:background">@android:color/transparent</item>
    <item name="android:windowBackground">@android:color/transparent</item>
    <item name="android:layout_width">fill_parent</item>
    <item name="android:layout_height">fill_parent</item>
</style>

通过style来设置全屏、背景透明、且自定义界面的dialog。

显示一个自定义内容的对话框：

new AlertDialog.Builder(this)
		.setTitle("提示")
		.setView(
				LayoutInflater.from(getApplicationContext())
						.inflate(R.layout.login_dialog_view,
								null))
		.setCancelable(false)
		.show();

Dialog透明度调整：

WindowManager.LayoutParams lp = dialog.getWindow()  
                    .getAttributes();  
  
lp.dimAmount  = 0.7f;//设置对话框外部区域透明度  
lp.alpha = 0.7f;//设置对话框本体背景透明度  
              
dialog.getWindow().setAttributes(lp); 

Dialog点击周围，touch事件传到盖住的界面上。

Window window = getWindow();  
        WindowManager.LayoutParams wl = window.getAttributes();
        wl.flags = wl.flags | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL;
        window.setAttributes(wl);

调整Dialog周围的透明度：

Window window = getWindow();  
        WindowManager.LayoutParams wl = window.getAttributes();
        wl.dimAmount = 0.2f;
        wl.flags = wl.flags | WindowManager.LayoutParams.FLAG_DIM_BEHIND;
        window.setAttributes(wl);