Android Studio渲染问题-缺少样式? [英] Android Studio Rendering Problems - Missing styles?

问题描述

我在 Android Studio 的 Preview 窗口中收到以下错误:

I get following error in the Preview window of Android Studio:

渲染问题缺少样式.是否选择了正确的主题这种布局?使用布局上方的主题组合框选择一个不同的布局，或修复主题样式引用.找不到当前主题中的?attr/actionBarPopupTheme".(4)类似错误不显示)

Rendering Problems Missing styles. Is the correct theme chosen for this layout? Use the Theme combo box above the layout to choose a different layout, or fix the theme style references. Failed to find '?attr/actionBarPopupTheme' in current theme. (4 similar errors not shown)

我创建了一个自定义样式/主题.这是关于 styles.xml :

I have created a custom style/theme. This is the regarding styles.xml:

<resources xmlns:tools="http://schemas.android.com/tools" xmlns:android="http://schemas.android.com/apk/res/android">

    <style name="CustomActionBarTheme" parent="@style/Theme.AppCompat.Light">
        <item name="android:actionBarStyle"   tools:ignore="NewApi">@style/MyActionBar</item>
        <item name="actionBarStyle">@style/MyActionBar</item>
        <item name="actionBarTheme">@style/MyActionBarTheme</item>
    </style>

    <style name="MyActionBar" parent="@style/Widget.AppCompat.Light.ActionBar.Solid.Inverse">
        <item name="android:background"  tools:ignore="NewApi">@color/white</item>
        <item name="titleTextStyle">@style/MyActionBar.ActionBar.TitleTextStyle</item>
        <item name="background">@color/bg_common</item>
    </style>

    <style name="MyActionBarTheme" parent="@style/Widget.AppCompat.Light.ActionBar.Solid.Inverse">
        <item name="actionMenuTextColor">@color/title</item>
        <item name="colorControlNormal">@color/title</item>
    </style>

    <style name="MyActionBar.ActionBar.TitleTextStyle" parent="@style/TextAppearance.AppCompat.Widget.ActionBar.Title">
        <item name="android:textColor">@color/title</item>
    </style>
</resources>

我的布局文件标题如下:

My layout file header looks like this:

<android.support.v4.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    style="@style/CustomActionBarTheme"
    android:id="@+id/drawer_layout"
    android:background="@color/bg_common_2"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

...

在清单文件中，我添加了application标记:

And in my manifest file I have added in the application tag:

android:theme="@style/CustomActionBarTheme" 

为什么会出现错误?我还在预览窗口中选择了 CustomActionBarTheme 作为主题.我想念什么吗?感谢您提前提出任何建议！

Why do I get the error? I also choosed CustomActionBarTheme in my Preview windows as Theme. Am I missing something? Thanks for any advice in advance!

推荐答案

Android Studio使用已安装的最新SDK来预览布局文件.由于缺少样式，这可能会导致预览错误-切换到较旧的API级别(例如，从23更改为22)可以解决此问题.

Android Studio uses the latest SDK installed to preview layout files. This can lead to preview errors due to missing styles - switching to an older API level (e.g. from 23 to 22) can fix this.

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