android - 检索项目 : No resource found that matches the given name 'android:Theme.Material.Light' 的父项时出错

Question

我在 styles.xml 中收到此错误:

Error retrieving parent for item: No resource found that matches the given name 'android:Theme.Material.Light'.

在 list 中:

<uses-sdk
    android:minSdkVersion="16"
    android:targetSdkVersion="21" />

Android SDK 管理器:

我更新了所有 api 21 和附加功能。

订购和导出:

values-v21/styles.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="AppTheme" parent="android:Theme.Material.Light">

        <item name="android:colorPrimary">@color/primary</item>
        <item name="android:colorPrimaryDark">@color/primary_dark</item>
        <item name="android:colorAccent">@color/accent</item>
        <item name="android:textColorPrimary">@color/text_primary</item>
        <item name="android:textColor">@color/text_secondary</item>
        <item name="android:navigationBarColor">@color/primary_dark</item>

    </style>
</resources>  

控制台:

E:\workspace\WelcomeToL\app\src\main\res\values-v21\styles.xml:3: error: Error retrieving parent for item: No resource found that matches the given name 'android:Theme.Material.Light'.

E:\workspace\WelcomeToL\app\src\main\res\values-v21\styles.xml:7: error: Error: No resource found that matches the given name: attr 'android:colorAccent'.
 
E:\workspace\WelcomeToL\app\src\main\res\values-v21\styles.xml:5: error: Error: No resource found that matches the given name: attr 'android:colorPrimary'.
 
E:\workspace\WelcomeToL\app\src\main\res\values-v21\styles.xml:6: error: Error: No resource found that matches the given name: attr 'android:colorPrimaryDark'.

E:\workspace\WelcomeToL\app\src\main\res\values-v21\styles.xml:10: error: Error: No resource found that matches the given name: attr 'android:navigationBarColor'.

我不知道为什么仍然会出现此错误。任何人都可以帮助我解决这个问题。谢谢。

Answer 1

Error retrieving parent for item: No resource found that matches the given name 'android:Theme.Material.Light'.

Material.Light 主题需要项目的 API 级别 21。将项目的 Project Build Target 从 Properties->Android->Project Build Target 设置为 API 21。