I got this error :
Caused by: java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter savedInstanceState
When i am trying to inflate a custom dialog in Kotlin , i got the error i wrote above on the super.onCreate line in the dialog.
the dialog code is :
class Custom_Dialog_Exit_App(var activity: Activity)// TODO Auto-generated constructor stub
: Dialog(activity, R.style.full_screen_dialog) {
override fun onCreate(savedInstanceState: Bundle) {
super.onCreate(savedInstanceState)
requestWindowFeature(Window.FEATURE_NO_TITLE)
setContentView(R.layout.custom_dialog_exit_app)
activity.window!!.setLayout(WindowManager.LayoutParams.MATCH_PARENT,
WindowManager.LayoutParams.MATCH_PARENT)
initView()
}
fun initView() {
initClicks()
}
fun initClicks() {
}
}
and the init is :
val omer = Custom_Dialog_Exit_App(this@MainActivity)
omer.show()
Please help
override fun onCreate(savedInstanceState: Bundle) {
Since savedInstanceState
can be null
the type has to be Bundle?
.
When you specify that a parameter is not null then kotlin generates a check in all cases. This includes when implementing a Java interface so you need to be careful about making nullable parameters non-null.
I also meet the error ,I changed the type Bundle
to "Bundle?"
.Then it workd for me. In Kotlin you have to specify if the variable/parameter is null or not.
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
init()
}
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