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Input masks restrict data input and allow you to guide users to enter correct values. Apply formatting to your text fields, see examples. Filter out nonessential symbols (e.g. extract 0123456 from +1 (999) 012-34-56) For international phone numbers. Apply number/currency formatting. Be careful when specifying the field's android:inputType.
Format text fields without being affected by input filters
A simple way to format text fields without getting affected by input filters. Used to define how to format the text. Value is used to define the format string. There's no limitation here. You can use any type of character with any type of input filters. maskCharacter is used to define which characters in the format string user can edit. It's not mandatory to define this explicitly.