无法运行Android应用程序，错误：检索项目的父项时出错错误

我最近安装了eclipse并为android开发设置了库，我刚刚从eclipse创建了一个新的android应用程序，配置如下 最低版本为2.2，目标版本为4.1.2，编译版本为4.1.2。当我在创建项目后清理它时，我在控制台中得到了很多错误，如下所示

[Date - SwipingTabs] /home/user/workspace/appcompat_v7/res/values-v21/themes_base.xml:117: error: Error: No resource found that matches the given name: attr 'android:colorPrimaryDark'.
[Date - SwipingTabs] 
[Date - SwipingTabs] /home/user/workspace/appcompat_v7/res/values-v21/themes_base.xml:155: error: Error: No resource found that matches the given name: attr 'android:colorAccent'.
[Date - SwipingTabs] 
[Date - SwipingTabs] /home/user/workspace/appcompat_v7/res/values-v21/themes_base.xml:157: error: Error: No resource found that matches the given name: attr 'android:colorControlActivated'.
[Date - SwipingTabs] 
[Date - SwipingTabs] /home/user/workspace/appcompat_v7/res/values-v21/themes_base.xml:158: error: Error: No resource found that matches the given name: attr 'android:colorControlHighlight'.
[Date - SwipingTabs] 
[Date - SwipingTabs] /home/user/workspace/appcompat_v7/res/values-v21/themes_base.xml:156: error: Error: No resource found that matches the given name: attr 'android:colorControlNormal'.
[Date - SwipingTabs] 
[Date - SwipingTabs] /home/user/workspace/appcompat_v7/res/values-v21/themes_base.xml:153: error: Error: No resource found that matches the given name: attr 'android:colorPrimary'.
[Date - SwipingTabs] 
[Date - SwipingTabs] /home/user/workspace/appcompat_v7/res/values-v21/themes_base.xml:154: error: Error: No resource found that matches the given name: attr 'android:colorPrimaryDark'.
[Date - SwipingTabs] 
[Date - SwipingTabs] /home/user/workspace/appcompat_v7/res/values-v21/themes_base.xml:192: error: Error: No resource found that matches the given name: attr 'android:colorAccent'.
[Date - SwipingTabs] 
[Date - SwipingTabs] /home/user/workspace/appcompat_v7/res/values-v21/themes_base.xml:194: error: Error: No resource found that matches the given name: attr 'android:colorControlActivated'.
[Date - SwipingTabs] 
[Date - SwipingTabs] /home/user/workspace/appcompat_v7/res/values-v21/themes_base.xml:195: error: Error: No resource found that matches the given name: attr 'android:colorControlHighlight'.
[Date - SwipingTabs] 
[Date - SwipingTabs] /home/user/workspace/appcompat_v7/res/values-v21/themes_base.xml:193: error: Error: No resource found that matches the given name: attr 'android:colorControlNormal'.
[Date - SwipingTabs] 
[Date - SwipingTabs] /home/user/workspace/appcompat_v7/res/values-v21/themes_base.xml:190: error: Error: No resource found that matches the given name: attr 'android:colorPrimary'.
[Date - SwipingTabs] 
[Date - SwipingTabs] /home/user/workspace/appcompat_v7/res/values-v21/themes_base.xml:191: error: Error: No resource found that matches the given name: attr 'android:colorPrimaryDark'.
[Date - SwipingTabs] 

我不知道为什么会出现这些错误，我也无法运行该项目

我的项目属性是

此外，我还注意到，当我创建项目时，在我的工作区中创建了一个新文件夹appcompat_7，但它有错误

另外，当我打开

MainActivity.java

时，在

R

处出现一个错误，指出

R不能解析为变量

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有人知道如何解决这些错误吗？

您正在使用上一个appcompat v21

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您必须使用API21编译您的项目。

在清理过程中，您是否也检查了菜单项“自动生成”？