Hi there, a similar question was asked and answered here, please check it out, let us know if this is helpful to resolve the issue above.
About using Microsoft graph to build Android apps, the class in the example was not found
**According to official documents（ https://learn.microsoft.com/zh-cn/graph/tutorials/android?context=outlook%2Fcontext ）Use Microsoft graph to build Android applications.
However, when I write code according to the examples in the document, I find that some classes cannot be found in the corresponding packages, such as com.microsoft.graph.authentication.baseauthenticationprovider, which cannot be found in packages that depend on Microsoft graph: 3.1.0, and com.microsoft.graph.options cannot be found.
Is there a problem with the document sample code? Or do I rely on the wrong package? (I checked other versions of packages on GitHub and found no relevant classes)**