Define a style
<style name="disable_background_dim_dialog" parent=
"@android:style/Theme.Dialog"> <item name="android:windowFrame">@null</item> <!
-- frame --> <item name="android:windowIsFloating">true</item> <!--
Does it appear in the activity above --> <item name="android:windowIsTranslucent">false</item> <!--
translucent --> <item name="android:windowNoTitle">true</item> <!-- Untitled --> <item name=
"android:backgroundDimEnabled">false</item> <!-- The background is vague --> </style>
Set it in the code :
It can be solved successfully

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