android Activity 透明，半透明效果的设置transparent

转载地址：点击打开链接

res/values/styles.xml

<resources>
<style name="Transparent
">
<item name="android:windowBackground">@color/transparent_background</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowAnimationStyle">@+android:style/Animation.Translucent</item>
</style>
</resources>

res/values/color.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="transparent_background">#50000000</color>
</resources>

注意：color.xml的#5000000前两位是透明的效果参数从00--99（透明--不怎么透明），后6位是颜色的设置

manifest.xml

<activity android:name=".TransparentActivity" android:theme="@style/Transparent">
</activity>

java代码

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTheme(R.style.Transparent);
setContentView(R.layout.transparent);
}