我有一个UITextField,希望可以“自动”调整其边界大小以便为添加到该字段的字符串腾出空间。但是,我希望它在宽度上达到一定的最大值。我应该如何做才能实现呢?
谢谢任何帮助。
编辑:
TestingView.h
谢谢任何帮助。
编辑:
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