如何以编程方式选择UITextField进行编辑

Question

我有一个UITextField,我需要以编程方式选择,所以当用户点击UIDatePicker中的日期时,它将被发送到该UITextField.

这是我的代码,它没有选择UITextField; 我已经尝试了UIControlEvent的所有可能组合,但它们都不起作用.还有其他想法吗？

    //  set textField parameters
if([whichTextField isEqualToString:@"oStartTime"]) {
    oStartTime.backgroundColor = [UIColor colorWithRed:252.0/255.0 green:255.0/255.0 blue:197.0/255.0 alpha:1.0];
    [oStartTime sendActionsForControlEvents: UIControlEventTouchUpInside];

}
else if([whichTextField isEqualToString:@"oFinishTime"]) {
    oFinishTime.backgroundColor = [UIColor colorWithRed:252.0/255.0 green:255.0/255.0 blue:197.0/255.0 alpha:1.0];
    [oFinishTime sendActionsForControlEvents: UIControlEventTouchUpInside];
}

Answer 1

请参阅UIResponder实例方法becomeFirstResponder.