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报错Do not request Window.FEATURE_SUPPORT_ACTION_BAR and set windowActionBar to false in your theme
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.
报错如图
解决方法：
打开AndroidManifest.xml,把 android：theme="@style/Theme.MyApplication" 里面的Theme.MyApplication换成Themes文件里的Theme.MyApplication.NoActionBar
android：theme="@style/Theme.MyApplication.NoActionBar"
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