取消标题栏。当requestWindowFeature(Window.FEATURE

当requestWindowFeature(Window.FEATURE_NO_TITLE);没有效果时； 把样式AppTheme改一下： <!-- Base application theme. -->     <style name="AppTheme" parent="AppTheme.Base">         <!-- Customize your theme here. -->     </style>     <style name="AppTheme.Base" parent="Theme.AppCompat.Light.NoActionBar">         <item name="colorPrimary">@color/colorPrimary</item>         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>         <item name="colorAccent">@color/colorAccent</item>         <item name="android:windowBackground">@android:color/white</item>     </style> //OK！原创地址忘记了，网上一搜一大堆