CODEWITHSUNDEEP
androidandroid-edittexttextwatcher
Dev
Dev

Reputation: 505

Android-Change Edittext after each change

how can i add Char such as this dash '-' after each change in edtitext for example if the user enter A then the text in edittext will be A- then the user will complete and enter Char B then the edittext will be A-B How to implement this ? thanks 

name = (EditText)findViewById(R.id.editText1);
        name.addTextChangedListener(new TextWatcher(){
             public void afterTextChanged(Editable s) {

                 name.setText("-");
                }
     public void beforeTextChanged(CharSequence s, int start, int count, int after){}
       public void onTextChanged(CharSequence s, int start, int before, int count){


               }

Upvotes: 3

Views: 4759

Answers (4)

PH7
PH7

Reputation: 3916

You are having infinite loop as described in Android Doc

but be careful not to get yourself into an infinite loop, because any changes you make will cause this method to be called again recursively.

So all you have to do is just imposing a condition to avoid infinite loop. For example,

name.addTextChangedListener(new TextWatcher() {
        public void afterTextChanged(Editable s) {
            if(s.charAt(s.length()-1)!='-'){
                s.append("-");
            }

        }

        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
        }

        public void onTextChanged(CharSequence s, int start, int before,
                int count) {
        }

    });

Upvotes: 4

Ron
Ron

Reputation: 24235

Append the - char in beforeTextChagned

  name = (EditText)findViewById(R.id.editText1);
  name.addTextChangedListener(new TextWatcher() {
         public void beforeTextChanged(CharSequence s, int start, int count, int after) {
             name.setText(s+"-");
         }
         public void afterTextChanged(Editable s){}
         public void onTextChanged(CharSequence s, int start, int before, int count){}
  }

Upvotes: 1

Mohammed Azharuddin Shaikh
Mohammed Azharuddin Shaikh

Reputation: 42016

    name = (EditText)findViewById(R.id.editText1);
            name.addTextChangedListener(new TextWatcher(){
                 public void afterTextChanged(Editable s) {
               try{    
                     name.setText(s.toString()+"-");
               }catch(exception e)
              {
               e.printStackTrace();
              } 
                    }
         public void beforeTextChanged(CharSequence s, int start, int count, int after){}
           public void onTextChanged(CharSequence s, int start, int before, int count){

               }

Upvotes: 0

MByD
MByD

Reputation: 137322

Add a TextWatcher, using addTextChangedListener().

Upvotes: 1

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