[问与答] android 打开 popupwindow 时，如何使用屏幕暗

Sharer: V2EX January 12, 2020 at 4:43 am

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我尝试过使用以下代码

Window window=getWindow();
        WindowManager.LayoutParams wl = window.getAttributes();
        wl.alpha=0.6f;   //这句就是设置窗口里崆件的透明度的．０.０全透明．１.０不透明．
        window.setAttributes(wl);

但不是变暗是我的 activity 变透明，和上个 Activity 叠加在一起了。

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