react-native之android环境搭建走过的坑

直接从现有的项目中react-native run-android报错信息如下

Building and installing the app on the device (cd android && ./gradlew installDebug)...
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/getting-started.html

解决思路：

• 首先考虑到的应该是build的配置跟提交人的配置不一致导致的
• 确保android环境已经配置好，官方的react-native init AwesomeProject可以运行
• 删掉android/local.properties别人的配置文件
• 参照AwesomeProject的例子修改以下文件如图1，项目目录下手动执行cd android && ./gradlew installDebug试一试，如果有权限问题：chmod +x gradlew，正常的会如下图2所示
  
  图1
  
  
  图2