#### 修改flutterSKD中的flutter.gradle文件
```
//文件路径在FlutterSDK中的\packages\flutter_tools\gradle文件夹中
修改repositories为
repositories {
// google()
// jcenter()
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' }
}
```
#### 修改android项目的build.gradle文件
```
repositories {
// google()
// center()
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' }
}
```
重新编译

解决Flutter无法下载依赖