Видео ютуба по тегу Android Studio - Java - Telephonymanager - Error: Non-Static Method

Behebung von non-static Methodenfehlern in Android Studio mit TelephonyManager
Behebung von non-static Methodenfehlern in Android Studio mit TelephonyManager
Resolving non-static Method Errors in Android Studio with TelephonyManager
Resolving non-static Method Errors in Android Studio with TelephonyManager