您需要添加一個UITapGestureRecogniser并將其分配到視圖中，然后在UITextField上面是選擇器。

守則：

視圖DidLoad

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard)];[self.view addGestureRecognizer:tap];

解雇鍵盤：

-(void)dismissKeyboard 
{
    [aTextField resignFirstResponder];}

(在哪里aTextField是負責鍵盤的文本字段)

SWIFT 3版本看起來是這樣的

let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.dismissKeyboard (_:)))self.view.addGestureRecognizer(tapGesture)

解雇鍵盤

func dismissKeyboard (_ sender: UITapGestureRecognizer) {
    aTextField.resignFirstResponder()}

我想出了幾個答案。

使用在viewDidLoad:

UIGestureRecognizer *tapper;- (void)viewDidLoad{
    [super viewDidLoad];
    tapper = [[UITapGestureRecognizer alloc]
                initWithTarget:self action:@selector(handleSingleTap:)];
    tapper.cancelsTouchesInView = NO;
    [self.view addGestureRecognizer:tapper];}

刪除當前正在編輯的內容：

- (void)handleSingleTap:(UITapGestureRecognizer *) sender{
    [self.view endEditing:YES];}