我正在尝试运行mapsfage示例android项目，但它给了我这个：
SDK location not found. Define a location by setting the ANDROID_SDK_ROOT environment variable or by setting the sdk.dir path in your project's local.properties file.
Set sdk.dir in local.properties and sync project
Affected Modules: mapsforge-map-android, mapsforge-poi-android, mapsforge-samples-android, seamap, sqlite-android, test
我已经定义了环境变量并设置了sdk.dir。这只会给这个项目带来这个错误。
对于MacOS，将此命令输入终端
export ANDROID_SDK_ROOT=/Users/USER_NAME/Library/Android/sdk
其中USER_NAME是您在mac 上的用户名