How to Dialogfragment disable click outside on android?

For your requirement, you should use setCancelable(true).

Dialog dialog = super.onCreateDialog(savedInstanceState);
dialog.setCancelable(true);
dialog.setCanceledOnTouchOutside(true);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);

Kotlin overide onCreateDialog in your DialogFragment

override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
    val dialog = super.onCreateDialog(savedInstanceState)
    dialog.setCancelable(false)
    dialog.setCanceledOnTouchOutside(false)
    return dialog
}