1.给布局设置主题
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<style name="dialog" parent="@android:style/Theme.Dialog">
<item name="android:windowFrame">@null</item>
<item name="android:windowIsFloating">true</item>
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowNoTitle">true</item>
<item name="android:background">@android:color/transparent</item>
<item name="android:windowBackground">@android:color/transparent
<item name="android:backgroundDimEnabled">true</item>
<item name="android:backgroundDimAmount">0.4</item>
</style>
2,创建提示框
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此外延伸:
dialog.setCancelable(false);
dialog弹出后会点击屏幕或物理返回键,dialog不消失
dialog.setCanceledOnTouchOutside(false);
dialog弹出后会点击屏幕,dialog不消失;点击物理返回键dialog消失
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