how to set a default value to EditField when it is cleared?

Question

I am using an EditText field in my application. also i had added addTextChangedListener for that. On the onTextChanged method, i had called my squareFunction. The code is like..

value = (EditText)findViewById(R.id.amount);
value.addTextChangedListener(new TextWatcher() {
    public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) 
            {
                squareFunction();

            }

            public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,int arg3) {
                // TODO Auto-generated method stub

            }

            public void afterTextChanged(Editable arg0) {
                // TODO Auto-generated method stub

            }
        });

Now my problem:= i am getting the value of input numbers correctly. But when i clear the EditField, an error comes and ask me to "Force Close". I want to make my editField value to 0 if all the characters in it are cleared. Is it possible? If yes, how it can be done. Plz explain with code if possible...

score 2 · Answer 1 · answered Dec 06 '11 at 06:10

2

You should try adding condition like

if(value.getText().toString().equalsIgnoreCase(""))
{
 Log.i(TAG,"EditText Clear");
//set value to 0
}
else
{
 squareFunction(); 
}

also use this in afterTextChanged

answered Dec 06 '11 at 06:10

MKJParekh

34,073
11
87
98

score 2 · Accepted Answer · answered Dec 06 '11 at 06:10

2

inside onTextChanged()

if( arg0.length()==0)
{
value.setText("");
}

i hope you tried this basic thing , so what errorlog says at the time of force close ??

answered Dec 06 '11 at 06:10

Shailendra Singh Rajawat

8,172
3
35
40

sorry dear. i am new to android. im just studying the basics. i had tried that logic. but instead of that arg0.length()==0, i had checked with arg0.length()==1. thank u dear for ur timely help... – Dil Se... Dec 06 '11 at 06:25

score 0 · Answer 3 · answered Dec 06 '11 at 06:11

0

The error is due to the function trying to perform square when you r clearing the values. Move the square function to afterTextChanged, and in onTextChange, check the length of the edittext, if it is zero, set text to 0.

answered Dec 06 '11 at 06:11

Mal

373
4
15

how to set a default value to EditField when it is cleared?

3 Answers3