Gradle already installs the necessary build tools when they are not present, and builds with build tools 26.0.2 have already worked. I have fully documented the information in the following post: Accept the Android SDK license via Android Studio thanks for the quick response, although note that this may not be the solution. The number 30 is arbitrary, should be enough to cover the number of license assumptions, but can be increased if necessary From July 2019, the simplest method is to be used: flutter doctor –android-licenses in the command prompt. – Run: Yes| sdkmanager –Licenses – Run: Yes | sdkmanager –Update || Output 0 This is much more flexible and does not require manual intervention. These licenses must have already been downloaded to the android-sdk-home/licenses directory. What I suspect is that Google may have updated something in the SDK manager – maybe changed the license text? (Accepted licenses are saved as a SHA1 summary of the license text.) There is a small delay between the jases, so the command may remain blocked for a while when the license is displayed, but it does not require human intervention.

Sdkmanager accept license