Nikolas Bozic questions

• Attempt to invoke virtual method 'void android.arch.lifecycle.MutableLiveData.setValue(java.lang.Object)' on a null object reference
• Why is onCreateView in Fragment called twice after device rotation in Android?
• What is Chain object in OkHttp interceptors Retrofit
• How does LiveData know when data is changed in Room Database?
• ViewModel onchange gets called multiple times when back from Fragment

Nikolas Bozic answers