Android Pass Argument/Data to DialogFragment
July 24, 2018and Pass Result from DialogFragment to Activity
class LocationPickerDialog : DialogFragment() {
companion object {
private const val EXTRA_LAT = "lat"
private const val EXTRA_LNG = "lng"
fun newInstance(lat: Double? = null, lng: Double? = null): LocationPickerDialog {
val dialog = LocationPickerDialog()
val args = Bundle().apply {
lat?.let { putDouble(EXTRA_LAT, it) }
lng?.let { putDouble(EXTRA_LNG, it) }
}
dialog.arguments = args
return dialog
}
}
var onResult: ((lat: Double, lng: Double) -> Unit)? = null
override fun onActivityCreated(savedInstanceState: Bundle?) {
super.onActivityCreated(savedInstanceState)
// receive arguments
val lat = arguments?.getDouble(EXTRA_LAT)
val lng = arguments?.getDouble(EXTRA_LNG)
// return result
onResult?.invoke(lat, lng)
}
}
Launch DialogFragment
from Activity
, passing arguments and receiving result.
val dialog = LocationPickerDialog.newInstance(lat, lng)
dialog.onResult = { lat, lng ->
// do something
}
dialog.show(supportFragmentManager, "editLocation")
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