UITextField编辑后关闭虚拟键盘

IOS

使用ViewController的全局触摸方法touch

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
    [self.roomField resignFirstResponder];
    [self.buildField resignFirstResponder];
}

实现UITextFieldDelegate代理方法

self.roomField.delegate = self;
- (BOOL)textFieldShouldReturn:(UITextField *)textField{
    // called when 'return' key pressed. return NO to ignore.
    NSLog(@"按下了return键");
    [textField resignFirstResponder]; 
    return YES;
}

通过点击return按钮关闭键盘

当用户按下Return按钮时，将触发“did end on exit”事件，此时我们需要让文本字段取消控件，以关闭键盘。

[self.roomField addTarget:self action:@selector(closeTextFieldKeyBorad:) forControlEvents:UIControlEventEditingDidEndOnExit];
# 或者在Interface Builder中按command+2 选择Did End on Exit旁边的圆圈拖到File’s Owner图标，并将它连接到closeTextFieldKeyBorad操作。
- (void)closeTextFieldKeyBorad: (id)sender{
    [sender resignFirstResponder];
    NSLog(@"关闭键盘%@",sender);
}

在主界面上新建一个UIControl控件，监听触摸事件

UIControl *control = [[UIControl alloc] initWithFrame:[UIScreen mainScreen].bounds];
    [control addTarget:self action:@selector(closeTextFieldKeyBorad:) forControlEvents:UIControlEventTouchDown];
    [self.view addSubview:control];
- (void)closeTextFieldKeyBorad: (id)sender{
    NSLog(@"开始关闭键盘");
    [self.roomField resignFirstResponder];
    NSLog(@"关闭键盘%@",sender);
}