Increase UITextField to Certain Length

cocoa-touch, iphone, uitextfield, width

Solution

In the delegate method textField:shouldChangeCharactersInRange:replacementString: you should measure your `UITextField`'s text size by using sizeWithFont:constrainedToSize: and use the returning `CGSize`'s width parameter to set your `UITextField`'s bounds width.

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    float width = [yourTextField.text sizeWithFont:
           [UIFont systemFontOfSize: 14]  
                                      constrainedToSize:
           CGSizeMake(yourMaxWidth, yourTextField.bounds.size.height)].width;

    yourTextField.bounds = CGRectMake(yourTextField.bounds.origin.x,
                                      yourTextField.bounds.origin.y,
                                      width, 
                                      yourTextField.bounds.size.height);
}

Problem

I have a UITextField that I would like to "automatically" adjust its bounds size in order to make space for the string added in the field. However, I would like it to max-out in terms of width at a certain amount. What is the best way that I can go about doing this? Thanks for any help. EDIT: TestingView.h ``` #import <UIKit/UIKit.h> @interface TestingView : UIView <UITextFieldDelegate> { } @end ``` TestingView.m ``` #import "TestingView.h" @implementation TestingView - (void)awakeFromNib { CGRect testingBounds = self.bounds; testingBounds.size.width = testingBounds.size.width - 20; testingBounds.size.height = 30; CGPoint testingCenter = self.center; testingCenter.y = testingCenter.y - 75; UITextField *testingField = [[UITextField alloc] initWithFrame:testingBounds]; testingField.center = testingCenter; testingField.delegate = self; testingField.placeholder = @"Testing"; [self addSubview:testingField]; } - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string { int yourMaxWidth = 150; float width = [textField.text sizeWithFont: [UIFont systemFontOfSize: 14] constrainedToSize: CGSizeMake(yourMaxWidth, textField.bounds.size.height)].width; textField.bounds = CGRectMake(textField.bounds.origin.x, textField.bounds.origin.y, width, textField.bounds.size.height); return YES; } @end ```

Original source