how to set only numeric value for EditTextPreference in android?

Question

how to set only numeric value for EditTextPreference in android. I want a user to enter a port number not sure how can I put the limitation there

I am using this co

Answer 1

Kotlin Code which worked for me:

Here "editTextPrefSleepTime" is a key of EditTextPreference, which I set on xml file.

    private var editTextPrefSleepTime: EditTextPreference? = null

     override fun onStart() {
         super.onStart()
         editTextPrefSleepTime = preferenceManager.findPreference("editTextPrefSleepTime")
         editTextPrefSleepTime?.setOnBindEditTextListener {
             it.inputType = InputType.TYPE_CLASS_NUMBER
         }
     }