CODEWITHSUNDEEP
androidregexkotlin
Antonio Labra
Antonio Labra

Reputation: 2000

Regex in android-digits

today I have a doubt about regex and android:digits property

Is there a way to set a regex in my layout?

something like

android:digits="^[A-Z0-9]+$"

This should allow only UPPERCASE LETTERS and NUMBERS but is not working like that

Thank you so much!

Upvotes: 0

Views: 431

Answers (1)

Darkman
Darkman

Reputation: 2981

That property is to specify allowed characters. Surprisingly, it even allows alphabets, symbols, etc...

<EditText
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:inputType="number"
    android:digits="0123abc"
    android:ems="10"/>

This will limit the input to just 0, 1, 2, 3, a, b and c.

Is there a way to set a regex in my layout?

You're probably could but it is limited to EditTexts by using a custom attribute and implementing InputFilter. It is not just adding extra works but making everything far more complicated and I'm pretty sure this is not something that you want to hear.

This should allow only UPPERCASE LETTERS and NUMBERS

android:digits="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"

Upvotes: 2

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