检测UITextField失去焦点 [英] Detect UITextField Lost Focus

问题描述

我搜索了很多谷歌搜索和heree，但没有任何用处。

i searched a lot googling and heree, but nothing useful.

我有两个文本区域，我无法识别哪一个失去了焦点。

我尝试了所有选项，但没有。

I have two textfields and i don't able to recognize which one lost the focus.
I tried all options, but nothing.

这里 textFieldDidEndEditing ：

- (void) textFieldDidEndEditing:(UITextField *)textField {  
  NSLog(@"%@", [textField state]);
  NSLog(@"%d", [textField isSelected]);
  NSLog(@"%d", [textField isFirstResponder]);
  NSLog(@"%d", [textField isHighlighted]);
  NSLog(@"%d", [textField isTouchInside]);

  if ( ![textField isFirstResponder] || ![textField isSelected] ) {
  //if ( [textField state] != UIControlStateSelected) {
    NSLog(@"not selected!");
    [...]
    // remove view / etc...
  }
}

所有NSLog都返回0！为什么？！？

All NSLog returns 0! Why?!?

如何检测丢失的焦点？每次按键盘按钮时都会调用此方法，不仅仅是在最后！

还有其他选择吗？

How can i detect lost focus? This method has called every time that i press a keyboard button, non only at the end!
Is there any alternatives?

编辑：

我不想从文本切换但我想在屏幕上单击时检测丢失的焦点。 （键盘将关闭或不关闭，插入符号不在文本字段中）！

EDIT:
I don't want to switch from texts but i want to detect lost focus when i click anyways on screen. (the keyboard will dismiss or not and the caret is not present on textfield)!

谢谢。

推荐答案

要处理外部文本字段，您可以在视图控制器中覆盖 touchesBegan ：

To handle tapping outside text fields you can override touchesBegan in your view controller:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *) event
{
    UITouch *touch = [[event allTouches] anyObject];
    if ([textField1 isFirstResponder] && (textField1 != touch.view))
    {
        // textField1 lost focus
    }

    if ([textField2 isFirstResponder] && (textField2 != touch.view))
    {
        // textField2 lost focus
    }

    ...
}

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