無法找到Google Play版本

Question

我以前一直在使用Google Play，但在一個新項目中遇到了一個奇怪的問題。我使用SDK Manager下載了GP，並通過Project Structure/Dependencies添加了它，它自動在build.gradle依賴項中添加了一行。 但是當我做重建項目，它失敗：

Error:A problem occurred configuring project ':app'. 
> Could not resolve all dependencies for configuration ':app:_debugCompile'. 
    > Could not find any version that matches com.google.android.gms:play-services:+. 
Searched in the following locations: 
    https://jcenter.bintray.com/com/google/android/gms/play-services/maven-metadata.xml 
    https://jcenter.bintray.com/com/google/android/gms/play-services/ 
    https://repo1.maven.org/maven2/com/google/android/gms/play-services/maven-metadata.xml 
    https://repo1.maven.org/maven2/com/google/android/gms/play-services/ 
    http://jzaccone.github.io/SlidingMenu-aar/com/google/android/gms/play-services/maven-metadata.xml 
    http://jzaccone.github.io/SlidingMenu-aar/com/google/android/gms/play-services/ 
    https://oss.sonatype.org/content/repositories/snapshots/com/google/android/gms/play-services/maven-metadata.xml 
    https://oss.sonatype.org/content/repositories/snapshots/com/google/android/gms/play-services/ 
    file:/Users/thatsme/android-sdks/extras/android/m2repository/com/google/android/gms/play-services/maven-metadata.xml 
    file:/Users/thatsme/android-sdks/extras/android/m2repository/com/google/android/gms/play-services/ 
    file:/Users/thatsme/android-sdks/extras/google/m2repository/com/google/android/gms/play-services/maven-metadata.xml 
    file:/Users/thatsme/android-sdks/extras/google/m2repository/com/google/android/gms/play-services/ 
Required by: 
    GA:app:unspecified 

Answer 1

添加此體現

<application> 
     ... 
    <meta-data 
     android:name="com.google.android.gms.version" 
     android:value="@integer/google_play_services_version" /> 
</application> 

Answer 2

打開SDK管理器，檢查是否有所有必需的包：

To develop with Google APIs, you need the Google Play services package: Open the Extras directory and select:

• Google Repository
• Google Play services

參考http://developer.android.com/sdk/installing/adding-packages.html

Then：

To make the Google Play services APIs available to your app:

1. Open the build.gradle file inside your application module directory.

2. Add a new build rule under dependencies for the latest version of play-services. For example:

   dependencies { 
       compile 'com.google.android.gms:play-services:7.3.0' 
   } 
   

3. Save the changes and click Sync Project with Gradle Files in the toolbar.

參考：http://developer.android.com/google/play-services/setup.html#Setup