<java.lang.RuntimeException: Unable to start activ...
# stackoverflow
u
java.lang.RuntimeException: Unable to start activity ComponentInfo : java.lang.NullPointerException: null cannot be cast to non-null type I have an error when I click the item; an error appears like this : java.lang.RuntimeException: Unable to start activity ComponentInfo{com.dicoding.bfaa_1/com.dicoding.bfaa_1.UserDetail}: java.lang.NullPointerException: null cannot be cast to non-null type com.dicoding.bfaa_1.User. Here's my code UserDetail.kt package com.dicoding.bfaa_1 import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import kotlinx.android.synthetic.main.activity_user_detail.* class UserDetail :...