具有透明背景的活动

问题描述

我想要实现的是具有类似对话框的透明性且具有100％的RelativeLayout内容可见性的活动.这是活动的xml:

what I want to achieve is activity with dialog-like transparency with 100% visibility of RelativeLayout content. This is activity's xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginBottom="50dip"
        android:layout_marginLeft="8dip"
        android:layout_marginRight="8dip"
        android:layout_marginTop="50dip">
        (...)
    </RelativeLayout>
</LinearLayout>

这很明显:

<activity
        android:name="com.acentic.rcontrol.activities.MyActivity"
        android:theme="@android:style/Theme.Translucent.NoTitleBar" >
</activity>

现在背景仍然可见，我在做什么错了?

Right now background is still visible, what am I doing wrong?

---我加了

android:background="#c0000000"

到LinearLayout.现在背景如我所愿是透明的，但是RelativeLayout中的TextViews也是透明的..如何更改它?

to LinearLayout. Now background is transparent as I wanted to, but also TextViews inside RelativeLayout are also transparent.. how to change it?

推荐答案

设置LinearLayout透明度后，尝试将其子透明度设置为所需的值.这应该使它们具有与LinearLayout不同的透明度.试试吧.

After setting LinearLayout transparency try to set it's child transparency to the value that you want.This should make them have different transparency than LinearLayout. Try it.

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