CODEWITHSUNDEEP
android
anonymous
anonymous

Reputation: 341

how to clear edit text one by one character...including special characters?

i have an edit text and it has numbers and special character like 1234-11222 how can i delete the numbers and the - ?

i have a code and it works fine for alphabets and numbers but it does not work for special characters.

public void onClick(View v) {
     aadrclear.setVisibility(View.INVISIBLE);
     String textaddress=addr.getText().toString();
     //txtUserName.setText("");
     if (textaddress.length() != 0) {
         textaddress = textaddress.substring(0, textaddress.length() - 1);
         addr.setText(textaddress);
         addr.setSelection(textaddress.length());
     }
}

i have an edit text...if i enter numbers a - (hyphen) is placed between 4 numbers.. now if i want to clear using the above code it is not working.. please help

Upvotes: 0

Views: 2946

Answers (2)

ImMathan
ImMathan

Reputation: 4971

For adding - every 4 digits use this code snipper

int offset = 0;
textaddress.addTextChangedListener(new TextWatcher() {

    @Override
    public void onTextChanged(CharSequence s, int start, int before,
            int count) {
        // TODO Auto-generated method stub
        }
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
            int after) {
            // TODO Auto-generated method stub

        }

        @Override
        public void afterTextChanged(Editable s) {
            // TODO Auto-generated method stub
            offset++;
            if (textaddress.getText().toString().trim().length() > 0) {
                if (offset == 4) {
                    String result = text_address.getText().toString()
                            .concat("-");
                    textaddress.setText(result);
                    textaddress.setSelection(result.length());
                    offset = 0;
                }

            }
        }
    });

Upvotes: 0

ImMathan
ImMathan

Reputation: 4971

This will be the solution for my understanding over your question. 

if(textaddress.getText().toString().trim().length() > 0) {
     if(textaddress.getText().toString().charAt(textaddress.getText().toString().trim().length() - 1) != '-') {
            String result = textaddress.getText().toString().substring(0,textaddress.getText().toString().length() - 1);
            textaddress.setText(result);
            textaddress.setSelection(result.length());
    }
}

Notify me if it was wrong

EDIT

If u also interested in deleting - also. Remove the if condition.

Now the code will be like. 

if(textaddress.getText().toString().trim().length() > 0) {
      String result = textaddress.getText().toString().substring(0,textaddress.getText().toString().length() - 1);
      textaddress.setText(result);
      textaddress.setSelection(result.length());
}

Upvotes: 1

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