... checked element of the group and check the new one; Remove android:checkableBehavior from the xml and add android:checkable="true" for each MenuItem. ... <看更多>

<?xml version="1.0" encoding="utf-8"?> <menu xmlns:android="http://schemas.android.com/apk/res/android">. <group android:checkableBehavior="single">. ... <看更多>

<menu xmlns:android="http://schemas.android.com/apk/res/android"> <group android:checkableBehavior="single"> <item android:id="@+id/nav_camera" ... ... <看更多>

With the release of Android 5.0 Lollipop, the new material design style navigation ... items"> <menu> <group android:checkableBehavior="single"> <item ... ... <看更多>