如何设置让当前页面全透明

1.在AndroidManifest.xml中配置单独MyActivity2的页面样式

<activity
    android:name=".MyActivity2"
    android:theme="@android:style/Theme.Translucent.NoTitleBar.Fullscreen">
</activity>

如果报错

Unable to start activity ComponentInfo{com.example.test/com.example.test.MyActivity2}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2444)

修改MyActivity2的继承为Activity

class MyActivity2 extends Activity