How do I restrict my EditText input to numerical possibly decimal and signed input

Question

I have read Android  Limiting EditText to numbers and How do I show the number keyboard on an EditText in android   Unfortunately  none of them seems to fit my needs   I want to restrict my EditText input to only numbers  However  I also want to allow signed and or decimal input   Here is my current code  I need to do this programmatically    EditText edit   new EditText this    edit setHorizontallyScrolling true   edit setInputType InputType TYPE CLASS NUMBER     With this  my EditText merrily restricts all input to numerical digits  Unfortunately  it doesn t allow anything else  like the decimal point   If I change that line to edit setInputType InputType TYPE NUMBER FLAG DECIMAL   the EditText accepts all input  which isn t what I want       I ve tried combining flags  in desperation to see if it would work    edit setInputType InputType TYPE CLASS NUMBER   edit setInputType InputType TYPE NUMBER FLAG DECIMAL  edit setInputType InputType TYPE NUMBER FLAG SIGNED    That didn t work either  the EditText accepted all input as usual    So  how do I do this

User · Accepted Answer

Try using TextView setRawInputType   it corresponds to the android inputType attribute

User · Answer

Hi All I also had this problem  I use C  with Xamarin  Just a slight note that I hope someone else as well   I have tried multiple of the methods mentioned here   edittext1 SetRawInputType Android Text InputTypes ClassNumber   Android Text InputTypes NumberFlagDecimal     was the closest but still did not work  As Ralf mentioned  you could use     edit setInputType InputType TYPE CLASS NUMBER     InputType TYPE NUMBER FLAG DECIMAL     InputType TYPE NUMBER FLAG SIGNED     However in my C  I did not have this  instead you do it as follow   edittext1 InputType   Android Text InputTypes ClassNumber   Android Text InputTypes NumberFlagDecimal    Please note that the ORDER of these is important  If you put Decimal first  it will still allow you to type any Characters  where If Numer is first it is only numeric  but allows a decimal seperator

User · Answer

put this line in xml   android inputType  number numberDecimal

User · Answer

There s no reason to use setRawInputType    just use setInputType    However  you have to combine the class and flags with the OR operator   edit setInputType InputType TYPE CLASS NUMBER   InputType TYPE NUMBER FLAG DECIMAL   InputType TYPE NUMBER FLAG SIGNED

User · Answer

my solution       public void onTextChanged CharSequence s  int start  int before  int count       char ch s charAt start   count - 1      if  Character isLetter ch            s s subSequence start  count-1          edittext setText s

User · Answer

TO set the input type of EditText as decimal use this code   EditText edit   new EditText this   edit SetRawInputType Android Text InputTypes NumberFlagDecimal   Android Text InputTypes ClassNumber

User · Answer

Use this  Works fine  input setInputType InputType TYPE CLASS NUMBER   InputType TYPE NUMBER FLAG DECIMAL   InputType TYPE NUMBER FLAG SIGNED   input setKeyListener DigitsKeyListener getInstance  0123456789       EDIT  kotlin version  fun EditText onlyNumbers         inputType   InputType TYPE CLASS NUMBER or InputType TYPE NUMBER FLAG DECIMAL or         InputType TYPE NUMBER FLAG SIGNED     keyListener   DigitsKeyListener getInstance  0123456789

User · Answer

Try having this in your xml of Edit Text   android inputType  numberDecimal

User · Answer

EditText edit   new EditText this    edit setHorizontallyScrolling true   edit setInputType EditorInfo TYPE NUMBER FLAG SIGNED EditorInfo TYPE CLASS NUMBER

User · Answer

The best way to do that programmatically is using the next method   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  editText setKeyListener DigitsKeyListener getInstance true true       decimals and positive negative numbers    editText setKeyListener DigitsKeyListener getInstance false true       positive decimals numbers    editText setKeyListener DigitsKeyListener getInstance false false       positive integer numbers   editText setKeyListener DigitsKeyListener getInstance true false       positive negative integer numbers

User · Answer

use setRawInputType and setKeyListener  editTextNumberPicker setRawInputType InputType TYPE CLASS NUMBER                       InputType TYPE NUMBER FLAG DECIMAL InputType TYPE NUMBER FLAG SIGNED    editTextNumberPicker setKeyListener DigitsKeyListener getInstance false true     set decimals and positive numbers

[android] How do I restrict my EditText input to numerical (possibly decimal and signed) input?

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