如何回收UITextField的键盘

一.使用OC
1.首先, 要添加代理 UITextFieldDelegate
2.设置代理 textField.delegate = self;
3.实现协议中的方法

//点击return收回键盘
- (BOOL)textFieldShouldReturn:(UITextField *)textField

{

     //回收键盘,取消第一响应者

     [textField resignFirstResponder];

    return YES;

}

//点击空白处收回键盘
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {

     [textField resignFirstResponder];

}

二.使用Swift
步骤1, 2和OC中无差别, 具体实现方法稍有差别
1.点击return回收键盘
func textFieldShouldReturn(textField: UITextField!) -> Bool{
       textField.resignFirstResponder()
return true
 

  }
2.点击空白回收键盘
        var firstTextField : UITextField?
        var secondTextField : UITextField?
        var thirdTextField : UITextField?

override func touchesEnded(touches: Set, withEvent event: UIEvent) {
        thirdTextField?.resignFirstResponder()
        firstTextField?.resignFirstResponder()
        secondTextField?.resignFirstResponder()
    }