how prevent changing keyboard numbers to alphabets by pressing ABC key

Question

I place some textfields in my app,those textfield allows only numbers 0,1..9 and .symbol.

For that my code is

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {

    static NSCharacterSet *charSet = nil;
    if(!charSet) {
        charSet = [[[NSCharacterSet characterSetWithCharactersInString:@"0123456789."] invertedSet] retain];
    }
    NSRange location = [string rangeOfCharacterFromSet:charSet];
    return (location.location == NSNotFound);
}

It works fine,

But when ever i press ABC & #+= buttons keypad changes to another type.

I need to prevent that,user can use numbers and .,X keys only.

Rest of them not active ,if they are visible that not the problem

How can i done this.

can any one ple help me.

Thank u in advance.

Answer 1

There is a keyboard designed for this: UIKeyboardTypeDecimalPad