Android API Demos 2.2 SetWallpaper, Translucent和TranslucentBlur

Xml代码

1. < style name="Theme.Translucent">

2. < item name="android:windowIsTranslucent">true< /item>

3. < item name="android:windowBackground">@drawable/translucent_background< /item>

4. < item name="android:windowNoTitle">true< /item>

5. < item name="android:colorForeground">#fff< /item>

6. < /style>

< style name="Theme.Translucent">

< item name="android:windowIsTranslucent">true< /item>

< item name="android:windowBackground">@drawable/translucent_background< /item>

< item name="android:windowNoTitle">true< /item>

< item name="android:colorForeground">#fff< /item>

< /style>

如果同时android:windowBackground为白色时，就是全透明的效果了。

TranslucentBlur

设置window背景为半透明状态并且被掩盖的Activity为模糊状。

主要相关代码：

先设置当前window的背景为半透明状态。然后设置底下的window为模糊状。在setContentView之前调用。

Java代码

1. // Have the system blur any windows behind this one.

2. getWindow().setFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND,

3. WindowManager.LayoutParams.FLAG_BLUR_BEHIND);

// Have the system blur any windows behind this one.

getWindow().setFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND,

WindowManager.LayoutParams.FLAG_BLUR_BEHIND);