In Android development, Kotlin becomes the first choice for Android also because it is becoming more popular with developers. Certain features and addition added now for Kotlin.
Android developers who still use Java should probably get used to dealing with the language Kotlin as quickly as possible because the “Android development will have more favor Kotlin,” as Google writes in his Android Developers blog. The fact Kotlin can be used as an official language for Android Development.
After google blog, you should focus on Kotlin as Kotlin become the first choice for Android. Meanwhile, even more than 50 percent of professional Android programmers rely on Kotlin.
Google the company is serious about the use of Kotlin in Android. For example, many new Jetpack APIs and features will be offered to Kotlin in the future. “If you start a new project, you should write it in Kotlin,” Google also gives the Android developers as a clear message.