|Custom Alert Dialog Validation|
There are two Dialog that much used, they are AlertDialog and Dialog. Both can used for display a message. You also able to modify the view inside AlertDialog or Dialog. For custom Dialog view, please read here : Android Custom Popup Using AlertDialog And Dialog
Cannot create a validation on EditText inside AlertDialog
My experience using custom alert Dialog is i can't create a validation form and use setError() for EditText. It's because i wrote my validation inside alertDialog.setPositiveButton(). If we need to create a validation, it should outside of that area.
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Then how to do validation? Here it is, If you need to create a validation inside a custom AlertDialogBuilder, then please use the following code (at least works perfectly in my project):
Ok that's all a little explanation about how to do validation inside a custom Alert Dialog Builder. Hope it helps. Thank you.