android 支持 v7 util 丢失

Question

我已尝试在 Android Studio 上安装 Support7Demos 应用程序。如果我运行该项目，我会收到以下错误:

Error:(21, 31) error: package android.support.v7.util does not exist

我的 Gradle 文件包含以下库:

dependencies {
    compile "com.android.support:support-v4:22.2.0"
    compile "com.android.support:support-v13:21.0.2"
    compile "com.android.support:cardview-v7:21.0.2"
    compile 'com.android.support:appcompat-v7:22.2.0'
    compile 'com.android.support:gridlayout-v7:22.2.0'
    compile 'com.android.support:palette-v7:21.0.0'
    compile 'com.android.support:mediarouter-v7:21.0.0'
}

我正在使用以下构建工具:

    buildToolsVersion "22.0.1"

有没有人遇到同样的问题？

Answer 1

最后，我想通了:

解决方案是:添加正确的版本:

dependencies {
    compile 'com.android.support:appcompat-v7:22.2.0'
    compile 'com.android.support:cardview-v7:22.2.0'
    compile 'com.android.support:gridlayout-v7:22.2.0'
//        compile 'com.android.support:leanback-v17:22.2.0'
    compile 'com.android.support:mediarouter-v7:22.2.0'
    compile 'com.android.support:palette-v7:22.2.0'
    compile 'com.android.support:recyclerview-v7:22.2.0'
    compile 'com.android.support:support-annotations:22.2.0'
    compile 'com.android.support:support-v13:22.2.0'
    compile 'com.android.support:support-v4:22.2.0'
}