我克隆了git项目https://github.com/fbsamples/f8app
我做了所有的指示。但是当我尝试运行项目（run-android）时会发生错误。
FAILURE: Build failed with an exception.
* What went wrong:
A problem occurred configuring project ':app'.
> A problem occurred configuring project ':react-native-fbsdk'.
> Could not resolve all dependencies for configuration ':react-native-fbsdk:_debugCompile'.
> Could not find com.android.support:appcompat-v7:25.0.0.
Searched in the following locations:
file:/Users/Mastermind/.m2/repository/com/android/support/appcompat-v7/25.0.0/appcompat-v7-25.0.0.pom
file:/Users/Mastermind/.m2/repository/com/android/support/appcompat-v7/25.0.0/appcompat-v7-25.0.0.jar
https://jcenter.bintray.com/com/android/support/appcompat-v7/25.0.0/appcompat-v7-25.0.0.pom
https://jcenter.bintray.com/com/android/support/appcompat-v7/25.0.0/appcompat-v7-25.0.0.jar
file:/Users/Mastermind/Desktop/ReactNative/f8app/node_modules/node_modules/react-native/android/com/android/support/appcompat-v7/25.0.0/appcompat-v7-25.0.0.pom
file:/Users/Mastermind/Desktop/ReactNative/f8app/node_modules/node_modules/react-native/android/com/android/support/appcompat-v7/25.0.0/appcompat-v7-25.0.0.jar
file:/Users/Mastermind/Library/Android/sdk/extras/android/m2repository/com/android/support/appcompat-v7/25.0.0/appcompat-v7-25.0.0.pom
file:/Users/Mastermind/Library/Android/sdk/extras/android/m2repository/com/android/support/appcompat-v7/25.0.0/appcompat-v7-25.0.0.jar
file:/Users/Mastermind/Library/Android/sdk/extras/google/m2repository/com/android/support/appcompat-v7/25.0.0/appcompat-v7-25.0.0.pom
file:/Users/Mastermind/Library/Android/sdk/extras/google/m2repository/com/android/support/appcompat-v7/25.0.0/appcompat-v7-25.0.0.jar
* 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: 1 mins 20.189 secs
Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/android-setup.html