Juan Rodríguez

Since [JCenter annouced](https://jfrog.com/blog/into-the-sunset-bintray-jcenter-gocenter-and-chartcenter/) that it will close February 1st 2022, I deleted all jcenter references from my project and now I cannot compile because this error is occurring: ``` A...

When you call the method "Contact obtain(String md5)", you return null if the cache is invalid. This will throw an exception if you wait a while to navigate the MainActivity...