How to create EditText accepts Alphabets only in android

Question

How can I enter only alphabets in EditText in android

User · Answer

Allow only Alphabets in EditText android   InputFilter letterFilter   new InputFilter             public CharSequence filter CharSequence source  int start  int end  Spanned dest  int dstart  int dend                String filtered                   for  int i   start  i  lt  end  i                      char character   source charAt i                   if   Character isWhitespace character  amp  amp Character isLetter character                         filtered    character                                               return filtered                    editText setFilters new InputFilter   letterFilter

User · Answer

Try This   lt EditText   android id    id EditText1    android text      android inputType  text textNoSuggestions    android textSize  18sp    android layout width  80dp    android layout height  43dp  gt   lt  EditText gt    Other inputType can be found   Here

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If anybody still wants this  Java regex for support Unicode  is a good one  It s for when you want ONLY letters  no matter what encoding - japaneese  sweedish  iside an EditText  Later  you can check it using Matcher and Pattern compile

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edittext setFilters new InputFilter         new InputFilter             public CharSequence filter CharSequence src  int start                  int end  Spanned dst  int dstart  int dend                if src equals          for backspace                 return src                            if src toString   matches   a-zA-Z                        return src                            return edittext getText   toString                          please test thoroughly though

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Through Xml you can do easily as type following code in xml  editText      android digits  abcdefghijklmnopqrstuvwxyz    only characters will be accepted

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Put code edittext xml file      android digits  abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ

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For spaces  you can add single space in the digits  If you need any special characters like the dot  a comma also you can add to this list     android digits  abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ

User · Answer

For those who want that their editText should accept only alphabets and space  neither numerics nor any special characters   then one can use this InputFilter  Here I have created a method named getEditTextFilter   and written the InputFilter inside it   public static InputFilter getEditTextFilter             return new InputFilter                   Override             public CharSequence filter CharSequence source  int start  int end  Spanned dest  int dstart  int dend                     boolean keepOriginal   true                  StringBuilder sb   new StringBuilder end - start                   for  int i   start  i  lt  end  i                          char c   source charAt i                       if  isCharAllowed c      put your condition here                         sb append c                       else                         keepOriginal   false                                    if  keepOriginal                      return null                  else                       if  source instanceof Spanned                            SpannableString sp   new SpannableString sb                           TextUtils copySpansFrom  Spanned  source  start  sb length    null  sp  0                           return sp                        else                           return sb                                                                     private boolean isCharAllowed char c                    Pattern ps   Pattern compile    a-zA-Z                        Matcher ms   ps matcher String valueOf c                    return ms matches                                     Attach this inputFilter to your editText after finding it  like this    mEditText setFilters new InputFilter   getEditTextFilter        The original credit goes to  UMAR who gave the idea of validating using regular expression and  KamilSeweryn

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Add this line with your EditText tag   android digits  abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ    Your EditText tag should look like    lt EditText         android id    id editText1          android digits  abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ          android layout width  fill parent          android layout height  wrap content    gt

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EditText state    EditText  findViewById R id txtState                     Pattern ps   Pattern compile    a-zA-Z                        Matcher ms   ps matcher state getText   toString                     boolean bs   ms matches                    if  bs    false                        if  ErrorMessage contains  invalid                            ErrorMessage   ErrorMessage    state                        else                         ErrorMessage   ErrorMessage    invalid state

User · Answer

Try This Method For Java   EditText yourEditText    EditText  findViewById R id yourEditText   yourEditText setFilters new InputFilter     new InputFilter          Override     public CharSequence filter CharSequence cs  int start                  int end  Spanned spanned  int dStart  int dEnd               TODO Auto-generated method stub         if cs equals  quot  quot        for backspace              return cs                    if cs toString   matches  quot  a-zA-Z    quot                  return cs                    return  quot  quot               For Kotlin    val yourEditText   findViewById lt View gt  android R id yourEditText  as EditText     val reges   Regex  quot   0-9a-zA-Z     quot         this will allow user to only write letter and white space     yourEditText filters   arrayOf lt InputFilter gt           object   InputFilter               override fun filter                  cs  CharSequence  start  Int                  end  Int  spanned  Spanned   dStart  Int  dEnd  Int                 CharSequence                    if  cs     quot  quot        for backspace                     return cs                                   return if  cs toString   matches reges                         cs                   else  quot  quot

[android] How to create EditText accepts Alphabets only in android?

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