Set EditText Digits Programmatically

Solution 1:

Try this:

<EditText
    android:inputType="number"
    android:digits="0123456789."
/>

From Code:

weightInput.setKeyListener(DigitsKeyListener.getInstance("0123456789."));

But, it allows the user to include several "." See JoeyRA's answer for real numbers.

Solution 2:

Try this:

weightInput.setInputType(InputType.TYPE_NUMBER_FLAG_DECIMAL);           
weightInput.setKeyListener(DigitsKeyListener.getInstance(false,true));

public static DigitsKeyListener getInstance (boolean sign, boolean decimal) 

Returns a DigitsKeyListener that accepts the digits 0 through 9, plus the minus sign (only at the beginning) and/or decimal point (only one per field) if specified.

This solve the problem about the many '.' in EditText

Solution 3:

Use InputType.TYPE_NUMBER_FLAG_DECIMAL.

Also see: Input Types.

Solution 4:

if anyone still finding proper way, note that its setRawInputType() not setInputType()

val digits = "ABCDabcd" // or any characters you want to allow
editText.keyListener = DigitsKeyListener.getInstance(digits) 
editText.setRawInputType(InputType.TYPE_TEXT_VARIATION_PERSON_NAME)