Caused by: java.lang.IllegalStateException: This Activity already has an action bar supplied by the

 Caused by: java.lang.IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_SUPPORT_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.


看下报错的如下图:

Caused by: java.lang.IllegalStateException: This Activity already has an action bar supplied by the


这个意思是已经存在了actionBar,在mainfast里面添加一句代码就行了

<activity android:name=".popuwindow.PopuMenuActivity"
    android:theme="@style/AppTheme.NoActionBar"
    ></activity>
在style语句里面添加一下

<style name="AppTheme.NoActionBar">
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
</style>