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iOS

martin chibwe
martin chibwe
3,901 Points
Posted by martin chibwe
martin chibwe
3,901 Points

I am trying to limit the number of text the user can enter

Use the UITextViewDelegate protocol to limit the number of characters in an entry’s body to two hundred. Also use the protocol to implement a counter to let the user know how many characters have been used so far.

  • (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text{

    if (textView.text.length + text.length <= 200) { NSLog(@"you have reached the max word allowd"); }else if (textView.text.length + text.length <= 0) { NSLog(@"enter somthing please"); return NO; } return YES;

2 Answers

kerdeseverin
kerdeseverin
9,688 Points

Hope this helps ( saw your other post)

To limit the characters to any number try this

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

    if ([self.theTextField.text length] >= 200) {
        return NO;
    }
    else {
        return YES;
    }
}

Make sure that you set the delegate of the UITextfield to self and conform to the delegate. 

yourTextfield.delegate = self;

and to conform

@interface YourClassViewController ()<UITextFieldDelegate>

If you want to show the user the number of characters left you can use the same [self.theTextField.text length] and update a label or something, elsewhere.