CODEWITHSUNDEEP
androidstringandroid-edittextintegerzero
roshanpeter
roshanpeter

Reputation: 1364

Android Edittext having only zero entry

In my edittext I need to check whether it is entered zero only. For example I have an edittext for entering the IFSc code for Bank. It accepts only letters and digits. So if suppose user is entering zero only for 14 characters. I need to check, One solution I found is Covert the string into integer and add together, whether it is zero means user entered zer only for that I wrote code, but it wont working. Can anybody help me from this problem.

int ifno = Integer.parseInt(ifsc);
int sum = 0;

while (ifno == 0)
{
    sum = sum + ifno % 10;
    ifno = ifno / 10;
}

if(sum == 0)
{
    Toast.makeText(Neft_Details.this, "Not a valid IFSC Code", Toast.LENGTH_LONG).show();
}

Upvotes: 1

Views: 133

Answers (4)

buddhee
buddhee

Reputation: 11

Well another way to do this is, you can try to define a test function like this in your code.

public static boolean isAllZeros(String text) {
    char zero = '0';
    for (int i=0; i<text.length()-1; i++) {
        if (!(text.charAt(i) == zero)) {
            return false;
        }
    }
    return true;
}

Then test your string entered in the EditText by passing to this function. This way you can avoid parsing it into an integer and you can directly check the entered string.

if(Test.isAllzeros(editextString)) {
    Toast.makeText(Neft_Details.this, "Not a valid IFSC Code",
    Toast.LENGTH_LONG).show();    
} else {
    // Do whatever you want in here.
}

Upvotes: 0

Iamat8
Iamat8

Reputation: 3906

I think you need to change your while loop try this..

String ifsc = "00000000000000";
int ifno = Integer.parseInt(ifsc);
int sum  = 0;              
   while (ifno != 0){
            ifno = ifno / 10;
            sum = sum + ifno;
   }
   if(sum == 0){
        Toast.makeText(Neft_Details.this, "Not a valid IFSC Code", Toast.LENGTH_LONG).show();
       // System.out.println("Invalid value");
   }

Upvotes: 1

Raghu Mudem
Raghu Mudem

Reputation: 6973

Try to use valueOf() method of Integer. Following is the example to findout the exact value of the given string.

    String value = "000000";
    value = Integer.valueOf(value).toString();
    System.out.println("result for check: "+value);

Output:
0

Hope this will help for you

Upvotes: 0

omidDev
omidDev

Reputation: 23

i make a very simple example for you and it works:

EditText info;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_test);

    info = (EditText)findViewById(R.id.infoNum);

    Button okButton = (Button)findViewById(R.id.okBtn);
    okButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

            int infoINt = Integer.parseInt(info.getText().toString());
            if(infoINt == 0){
                Toast.makeText(getBaseContext(),"Not a valid IFSC Code",Toast.LENGTH_LONG).show();
            }else{
                // do your true logic here
            }

        }
    });

}

Maybe error was in your logic area .

using ValidationExpression also works fine

Upvotes: 0

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