我有两个文本字段和一个按钮。首先我输入文本。一秒钟后我就得到了修改后的文本。
#import "tcViewController.h"
@interface tcViewController ()
@end
@implementation tcViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.textField.delegate = self;
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder];
return NO;
}
- (IBAction)changeText:(id)sender {
_textField2.text = _textField.text;
}
@end
如何在按下按钮时将文本从"text"更改为"text"?
您只需要制作:
[_textField2 setText:[_textField.text uppercaseString]];
- (IBAction)changeText:(id)sender {
_textField2.text = [_textField.text uppercaseString];
}