react Native 运行程序报错解决笔记

1. 命令行执行 react-native run-android

报如下错误：

Exception in thread "main" java.net.UnkNownHostException: services.gradle.org

解决方案：

修改hosts文件,增加如下

127.0.0.1 主机名 ps:127.0.0.1 Administrator

2.错误信息：

Failed to notify ProjectEvaluationListener.afterEvaluate(),but primary configur
ation failure takes precedence.
java.lang.RuntimeException: SDK location not found. Define location with sdk.dir
in the local.properties file or with an ANDROID_HOME environment variable.

解决：提示SDK 没有找到，环境变量添加 ANDROID_HOME 值：SDK路径