Android Dialog 全屏

一、在style中定义样式：

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="Transparent"> 
    <item name="android:windowBackground">@color/transparent_background</item> 
    <item name="android:windowNoTitle">true</item> 
    <item name="android:windowFullscreen">true</item>
    <item name="android:windowIsTranslucent">true</item>   
    <item name="android:windowAnimationStyle">@+android:style/Animation.Translucent</item> 
  </style>
</resources>

其中transparent_background为颜色值：#50000000，透明度为50

二、代码中定义Dialog时添加样式：

final Dialog dialog = new Dialog(this,R.style.Transparent);

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全屏显示Dialog的设置

下面是Dialog的style:

<!-- 全屏dialog样式 左右插入 -->
    <style name="mydialog" parent="@android:style/Theme.Dialog">
        <item name="android:windowFrame">@null</item>
        <item name="android:windowIsFloating">true</item>
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:backgroundDimEnabled">false</item>
        <item name="android:windowBackground">#FFFFFF</item>
    </style>

下面是创建Dialog的代码：

Dialog dialog = new Dialog(Activity.this, R.style.mydialog);
 dialog.setContentView(R.layout.layout);
 LayoutParams lay = dialog.getWindow().getAttributes();
 setParams(lay);
 dialog.show();

private void setParams(LayoutParams lay) {
  DisplayMetrics dm = new DisplayMetrics();
  getWindowManager().getDefaultDisplay().getMetrics(dm);
  Rect rect = new Rect();
  View view = getWindow().getDecorView();
  view.getWindowVisibleDisplayFrame(rect);
  lay.height = dm.heightPixels - rect.top;
  lay.width = dm.widthPixels;
 }