flutter gradle环境配置
环境变量
1.变量名：
FLUTTER_STORAGE_BASE_URL
变量
https://storage.flutter-io.cn
2.环境名
PUB_HOSTED_URL
变量
https://pub.flutter-io.cn
配置build.gradle文件
该文件中：
maven { url ‘https://maven.aliyun.com/repository/google’ }
maven { url ‘https://maven.aliyun.com/repository/jcenter’ }
maven { url ‘http://maven.aliyun.com/nexus/content/groups/public’ }
maven { url ‘https://maven.aliyun.com/repository/google’ }
maven { url ‘https://maven.aliyun.com/repository/jcenter’ }
maven { url ‘http://maven.aliyun.com/nexus/content/groups/public’ }
maven { url “https://storage.googleapis.com/download.flutter.io” }