Android甜警报对话框依赖项

我阅读了教程，并通过以下方式向我的项目添加了依赖项：

选择Build.Gradle（模块：app）并打开

转到这一行：

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
}

并改为：

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'cn.pedant.sweetalert:library:1.3'
}

运行“我的应用”。但我收到以下错误：

Error:A problem occurred configuring project ':app'.
> Could not resolve all dependencies for configuration ':app:_debugCompile'.
   > Could not find com.android.support:appcompat-v7:21.0.0.
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/support/appcompat-v7/21.0.0/appcompat-v7-21.0.0.pom
         https://jcenter.bintray.com/com/android/support/appcompat-v7/21.0.0/appcompat-v7-21.0.0.jar
         file:/D:/sdk/ADT-Bundle-Windows-x86-20140702.Full_p30download.com/sdk/extras/android/m2repository/com/android/support/appcompat-v7/21.0.0/appcompat-v7-21.0.0.pom
         file:/D:/sdk/ADT-Bundle-Windows-x86-20140702.Full_p30download.com/sdk/extras/android/m2repository/com/android/support/appcompat-v7/21.0.0/appcompat-v7-21.0.0.jar
         file:/D:/sdk/ADT-Bundle-Windows-x86-20140702.Full_p30download.com/sdk/extras/google/m2repository/com/android/support/appcompat-v7/21.0.0/appcompat-v7-21.0.0.pom
         file:/D:/sdk/ADT-Bundle-Windows-x86-20140702.Full_p30download.com/sdk/extras/google/m2repository/com/android/support/appcompat-v7/21.0.0/appcompat-v7-21.0.0.jar
     Required by:
         MyApplication:app:unspecified > cn.pedant.sweetalert:library:1.3 > com.pnikosis:materialish-progress:1.0

Error:Failed to find: com.android.support:appcompat-v7:21.0.0
<a href="openFile">Open File</a><br><a href="open.dependency.in.project.structure">Open in Project Structure dialog</a>

当我添加

appcompat-v7-21.0.0.jar

时，我得到以下错误：

Error:A problem occurred configuring project ':app'.
> Could not resolve all dependencies for configuration ':app:_debugCompile'.
   > Could not find com.android.support:appcompat-v7:21.0.0.
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/support/appcompat-v7/21.0.0/appcompat-v7-21.0.0.pom
         https://jcenter.bintray.com/com/android/support/appcompat-v7/21.0.0/appcompat-v7-21.0.0.jar
         file:/D:/sdk/ADT-Bundle-Windows-x86-20140702.Full_p30download.com/sdk/extras/android/m2repository/com/android/support/appcompat-v7/21.0.0/appcompat-v7-21.0.0.pom
         file:/D:/sdk/ADT-Bundle-Windows-x86-20140702.Full_p30download.com/sdk/extras/android/m2repository/com/android/support/appcompat-v7/21.0.0/appcompat-v7-21.0.0.jar
         file:/D:/sdk/ADT-Bundle-Windows-x86-20140702.Full_p30download.com/sdk/extras/google/m2repository/com/android/support/appcompat-v7/21.0.0/appcompat-v7-21.0.0.pom
         file:/D:/sdk/ADT-Bundle-Windows-x86-20140702.Full_p30download.com/sdk/extras/google/m2repository/com/android/support/appcompat-v7/21.0.0/appcompat-v7-21.0.0.jar
     Required by:
         MyApplication:app:unspecified > cn.pedant.sweetalert:library:1.3 > com.pnikosis:materialish-progress:1.0

Error:Failed to find: com.android.support:appcompat-v7:21.0.0
<a href="openFile">Open File</a><br><a href="open.dependency.in.project.structure">Open in Project Structure dialog</a>

错误：未能找到：com.android.support:appcompat-v7:21.0.0

首先删除appcompat-v7-21.0.0.jar，然后尝试用以下内容替换依赖项：

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:21.0.3'
    compile 'cn.pedant.sweetalert:library:1.3'
}

---

如果是缺少支持库的情况，我认为您需要从

---

Android SDK管理器->SDK工具->支持存储库->Android支持存储库。

编写代码后，我发现以下错误：错误：配置项目时出现问题：应用程序''>无法解析配置“”的所有依赖项：应用：_debugCompile'>无法解析com.android。支持：appcompat-v7:21.0.3。>repo.jfrog.org>无法解析com.android.support:appcompat-v7:21.0.3。需要者：MyApplication:app:unspecified>cn.pedant.sweetalert:library:1.3>com.pnikosis:materialish progress:1.0>无法获取“”。>repo.jfrog.orgI也犯了同样的错误。我不知道如何修理。为什么Android如此复杂：/