android - 找不到 com.android.support :support-v4:21. 0.2

Question

我正在使用 Android Studio v0.8.6

我有一个使用 google-play-service 的 Android 应用程序，当我尝试构建时出现此错误:

Executing tasks: [clean, :libraries:BaseGameUtils:generateDebugSources, :app:generateDebugSources]

Configuration on demand is an incubating feature.
Relying on packaging to define the extension of the main artifact has been deprecated and is scheduled to be removed in Gradle 2.0

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':app'.
> Could not resolve all dependencies for configuration ':app:_debugCompile'.
   > Could not find com.android.support:support-v4:21.0.2.
     Required by:
         RIGHTER-android:app:unspecified
         RIGHTER-android:app:unspecified > com.google.android.gms:play-services:6.1.11
         RIGHTER-android:app:unspecified > RIGHTER-android.libraries:BaseGameUtils:unspecified > com.android.support:appcompat-v7:20.0.0
   > Could not find com.android.support:support-v4:21.0.2.
     Required by:
         RIGHTER-android:app:unspecified > RIGHTER-android.libraries:BaseGameUtils:unspecified
   > Could not find com.android.support:support-v4:21.0.2.
     Required by:
         RIGHTER-android:app:unspecified > com.github.filippudak.progresspieview:library:1.0.4

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 3.405 secs

这个错误是最近才发生的，我没有更新任何东西。

任何帮助将不胜感激，提前致谢!

Answer 1

不要忘记偶尔更新 Android SDK Manager :-}