ios - 通过 LongPress 更改 UITextField 背景颜色

Question

All Boxes 是 UITextField。我想在用户长按 UITextField 时更改背景颜色。
长按哪个TextField UITextField颜色变了，不是所有的UITextField

Answer 1

尝试这样使用...

- (void)viewDidLoad
{
    [super viewDidLoad];
    UILongPressGestureRecognizer *gs = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(changeBackground:)];
    [textFld addGestureRecognizer:gs];
}

- (void)changeBackground:(UIGestureRecognizer *)gs
{
     [self.view endEditing:YES]; // Edited 

     UITextField *txtFld = (UITextField *)gs.view;

     [txtFld setBackgroundColor:[UIColor redColor]];
}