Failed to install the following Android SDK packages as some licences have not been accepted. platforms;android-26 Android SDK Platform 26 build-tools;28.0.3 Android SDK Build-Tools 28.0.3 To build this project, accept the SDK license agreements and install the missing components using the Android Studio SDK Manager.
解决办法：
Windows:%ANDROID_HOME%/tools/bin/sdkmanager --licenses
选Y
或者
%ANDROID_HOME%/tools/bin/sdkmanager platforms;android-26
出现协议内容，选Y