How can I change the EditText style programatically in Android?

Question

Hi I have a view with a form, and all button, labels, EditText, etc, are defined in a styles files, for example, for EditText I have app_edit_text and app_edit_text_error, my question is how can change in EditText the style from app_edit_text to app_edit_text_error?.

Thanks!

Answer 1

To be honest you can't change style programaticaly. You can only change text appearance using setTextAppearance(int resId) method: https://developer.android.com/reference/android/widget/TextView#setTextAppearance(int)

For your purpose you can use setError(String error) method of EditText or implement self states and handle it in EditText subclass. Here is good post about custom states: How to add a custom button state

Answer 2

You can't change styles programatically. You can either replace them with a new Instance (you can specify the styles in the constructor only) or you can use it with a new theme since theme can be changed programatically. Themes