CODEWITHSUNDEEP
iphoneobjective-cxcodeipaduitextfield
rinku yadav
rinku yadav

Reputation: 121

return keyboard on entering one character in textfield

I am developing an iphone application in which i have to return keyboard as soon as i type only one character in textfield. How to achieve this please suggest some solution.

Thanks.

Upvotes: 0

Views: 2307

Answers (5)

hchouhan02
hchouhan02

Reputation: 946

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
   if([textField.text length] == 1){
       [textField resignFirstResponder];
}

- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
   if([textField.text length]==1)
   {
       // here perform the action you want to do
   }

}

Upvotes: 0

Hiren
Hiren

Reputation: 12780

you have to write your code in text delegate method of

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
   if([textField.text length] == 1){
    [textField resignFirstResponder];
}

and then check your length of string in textFieldDidBeginEditing

- (void)textFieldDidBeginEditing:(UITextField *)textField{

    if([textField.text length] == 1){
    [textField resignFirstResponder];
}

}

Upvotes: 1

Evan Wu
Evan Wu

Reputation: 236

Step 1: Create a class implementing the protocol UITextFieldDelegate

@interface TheDelegateClass : NSObject <UITextFieldDelegate>

Step 2: In your implementation, override the method - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    // newString is what the user is trying to input.
    NSString *newString = [textField.text stringByReplacingCharactersInRange:range withString:string];
    if ([newString length] < 1) {
        // If newString is blank we will just ingore it.
        return YES;
    } else
    {
        // Otherwise we cut the length of newString to 1 (if needed) and set it to the textField.
        textField.text = [newString length] > 1 ? [newString substringToIndex:1] : newString;
        // And make the keyboard disappear.
        [textField resignFirstResponder];
        // Return NO to not change text again as we've already changed it.
        return NO;
    }
}

Step 3: Set an instance of the delegate class as the delegate of the UITextField.

TheDelegateClass *theDelegate = [[TheDelegateClass alloc] init];
[theTextField setDelegate:theDelegate];

Upvotes: 4

Sharanya K M
Sharanya K M

Reputation: 1805

I guess this is want you are looking for? 

- (BOOL)textFieldShouldReturn:(UITextField *)textField 
{
   [textField resignFirstResponder];
   [add your method here];
    return YES;

}

Or if you want it to resign as soon as it starts to edit you can put this code in textFieldDidBeginEditing: delegate method

[textField resignFirstResponder];

check this link

https://developer.apple.com/library/ios/#documentation/uikit/reference/UITextFieldDelegate_Protocol/UITextFieldDelegate/UITextFieldDelegate.html

Upvotes: 0

Padavan
Padavan

Reputation: 1074

add notification in textField creating code

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(changeText:) name:UITextFieldTextDidChangeNotification object:textField];

and implement

- (void) changeText: (id) sender;
{
    if ([textField.text length] == 1) 
    {
        [textField resignFirstResponder];
    }        
}

Upvotes: 0

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