[MaterialDatePicker] API to disable dialog auto dismiss

Is your feature request related to a problem? Please describe. I use a MaterialDatePicker.Builder.dateRangePicker(). When the user clicks the save button, the dialog is automatically dismissed. I don’t want that, in my use case I need the dialog to be dismissed by the user with the back button or programatically.

Describe the solution you’d like I request an official API to disable auto dismiss when save button is clicked. Something similar to this. On AlertDialog, we can get the positive button and set the on click listener on it, thus preventing the default behavior.

Describe alternatives you’ve considered I made a hack:

val picker=MaterialDatePicker.Builder.dateRangePicker()
    .build()

Handler().postDelayed({
    //hack - disable dismiss on confirm button click
    val confirmButton=picker::class.java.declaredFields
        .find { field -> field.name=="confirmButton" }
        ?.let { field ->
            field.isAccessible=true
            field.get(picker) as? Button
        }

    confirmButton?.setOnClickListener {
        val interval=picker.selection as Pair<Long?, Long?>
        doSomething(interval)
    }
}, 1000)

[drchen]

I think the recommended practice here will be overriding the dismiss() method and decide if you want to dismiss the picker by setting a flag in button listeners.

Another option is you can use findViewById(R.id.confirm_button) instead of reflection, which is less prone to the internal change of the library.

I’ll close the request for now since it’s an intended behavior and there is a reliable way to bypass it. : )

[andob]

I always used that hack with reflection as a workaround. regarding your issue, I guess you could use the same hack:

• grab confirmButton using reflection
• when date is selected: set confirmButton.isEnabled to true/false