凡在本Theme.Light.NoTitleBar顶部边框是从哪里来的？ [英] Where is this top border in Theme.Light.NoTitleBar coming from?

问题描述

我有以下的application.xml

I have the following application.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.currency.mobile.android">
    <uses-permission android:name="android.permission.INTERNET"/>
    <application android:icon="@drawable/icon" android:label="@string/app_name"
                 android:theme="@android:style/Theme.Light.NoTitleBar">

        <activity android:name=".MainActivity" android:noHistory="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>

        <activity android:name=".LoginActivity"/>
        <activity android:name=".HomeActivity" />
        <activity android:name=".FriendsActivity"/>
        <activity android:name=".PlacesActivity"/>
        <activity android:name=".ProfileActivity"/>
        <activity android:name=".PurchasesActivity"/>
    </application>
</manifest>

这是我的选项卡视图：

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
         android:id="@android:id/tabhost"
         android:layout_width="fill_parent"
         android:layout_height="fill_parent">
    <LinearLayout
            android:orientation="vertical"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:padding="5dp">
        <TabWidget
                android:id="@android:id/tabs"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"/>
        <FrameLayout
                android:id="@android:id/tabcontent"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:padding="5dp"/>
    </LinearLayout>
</TabHost>

在使用Theme.Light.NoTitleBar我得到中间这个丑陋的行：

When using Theme.Light.NoTitleBar I get this ugly line in the middle:

但是当我使用它Theme.Black没有这样一个奇怪的线。有办法解决它，这样我可以使用光主题？

But when I use Theme.Black it doesn't have such a weird line. Any way to fix it so that I can use light theme?

推荐答案

这实际上是主题的框架（或可能的叠加，我永远记得其中一个专门）的Andr​​oid它适用于，即使他们嵌套在活动，标签。关键是要设定一个主题（在 RES /价值/ theme.xml ）的窗框和 windowContentOverlay 设置为 @null 在容器的活动，像这样的属性：

That's actually the theme's frame (or possibly the overlay, i can never remember which one specifically), and Android applies it to activities even when they're nested inside tabs. The trick is to set a Theme (in res/value/theme.xml) with the windowFrame and windowContentOverlay properties set to @null on the container activity, like this one:

<style
    name="Theme.Light.NoFrame"
    parent="android:Theme.Light">
    <item
        name="android:windowFrame">@null</item>
    <item
        name="android:windowContentOverlay">@null</item>
</style>

我还建议通过在AOSP style.xml和theme.xml挖掘找出更多;主题和样式受到严重underdocumented但pretty容易，只需读取源理解。

I also recommend digging through style.xml and theme.xml in the AOSP to find out more; themes and styles are severely underdocumented but pretty easy to understand by just reading the source.

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