如何以编程方式选择UITextField进行编辑 [英] How to programmatically select a UITextField for editing

问题描述

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。

I have a UITextField that I need to select programmatically so when the user taps on a date in a UIDatePicker, it will be sent to that UITextField.

这是我有的代码，没有选择UITextField;我已经尝试了所有可能的 UIControlEvent 组合，但它们都不起作用。还有其他想法吗？

This is the code I have, which does not select the UITextField; I have tried all possible combinations of UIControlEvent, but none of them work. Any other ideas?

    //  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];
}

推荐答案

查看UIResponder实例方法< a href =http://developer.apple.com/library/ios/documentation/UIKit/Reference/UIResponder_Class/Reference/Reference.html#//apple_ref/occ/instm/UIResponder/becomeFirstResponder =noreferrer>成为第一个响应者。

See the UIResponder instance method becomeFirstResponder.

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