更改背景颜色时显示弹出 [英] Change background color when a Popup is shown

问题描述

我要让背景暗的一个 PopupWindow 显示时。就像海豚浏览器确实喜欢 -

I want to make the background darker when a PopupWindow is shown. Just like Dolphin Browser does like-

的PopupWindow之前

后PopupWindow

背景颜色比它是什么颜色较深。那么，我们怎样才能做到这一点？

The background color is darker than what it was. So, how can we do this?

推荐答案

在你的XML文件中添加这样的事情宽度和高度为match_parent。

In your xml file add something like this with width and height as 'match_parent'.

<RelativeLayout
        android:id="@+id/bac_dim_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#C0000000"
        android:visibility="gone" >
</RelativeLayout>

在您的活动的OnCreate

In your activity oncreate

//setting background dim when showing popup
back_dim_layout = (RelativeLayout) findViewById(R.id.bac_dim_layout);

最后使人们看到，当你展示你popupwindow并使其可见走了，当你退出popupwindow。

Finally make visible when you show your popupwindow and make its visible gone when you exit popupwindow.

back_dim_layout.setVisibility(View.Visible);
back_dim_layout.setVisibility(View.GONE);

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