ios - 从 inputView 获取 UItextField

Question

我有 UITextField。我将 UIDatePicker 设置为此 UITextField

的 inputView

UITextField *dateField = [[UITextField alloc] init];
        dateField.frame = CGRectMake(30, 180, 260, 30);
        dateField.delegate = self;
        [self addSubview:dateField];

        UIDatePicker *datePicker = [[UIDatePicker alloc]init];
        [datePicker setDate:[NSDate date]];
        datePicker.frame = CGRectMake(0, 568 - 100, 320, 100);
        [datePicker addTarget:self action:@selector(updateTextField:) forControlEvents:UIControlEventValueChanged];
        [dateField setInputView:datePicker];

-(void)updateTextField:(id)sender
{
    NSLog(@"SENDER = %@", sender);
}

有没有办法在 updateTextField 方法中获取 UITextField

Answer 1

是的，您可以像这样获取对 textView 的引用:

-(void)updateTextField:(id)sender
{
    UIDatePicker *datePicker = (UIDatePicker*) sender;
    UITextField *dateField = (UITextField*)datePicker.inputView;
}

//扩展

抱歉我的错误，我认为您将文本字段作为输入 View 添加到数据选择器。另一种你可以做你想做的事情的方法是将标签分配给你设置它的 TextView :

UITextField *dateField = [[UITextField alloc] init];
dateField.frame = CGRectMake(30, 180, 260, 30);
dateField.tag = 10;
dateField.delegate = self;
[self addSubview:dateField];

在您的方法 updateTextField 中:您可以像这样访问它:

UITextField *dateField = (UITextField*)[self viewWithTag:10];