Error: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.os.Handler.post(java.lang.Runnable)' on a null object reference
at com.tiper.MaterialSpinner$4$1.onFocusChange(MaterialSpinner.kt:281)
I have used the design library and android.enableJetifier and android.useAndroidX=true. My Implementation is in Java.
Error: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.os.Handler.post(java.lang.Runnable)' on a null object reference at com.tiper.MaterialSpinner$4$1.onFocusChange(MaterialSpinner.kt:281) I have used the design library and android.enableJetifier and android.useAndroidX=true. My Implementation is in Java.