在UITextView上失去焦点时隐藏键盘

Question

所以我有一个UITextView,我用它来允许用户提交一些文本.

我的问题是,我似乎无法弄清楚如何通过点击UITextView来允许用户"取消".

Answer 1

简化tuzzolotron的答案:在xib中正确连接以下插座

    IBOutlet UITextView *myTextView;

在视图控制器中使用它:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    UITouch *touch = [[event allTouches] anyObject];
    if ([myTextView isFirstResponder] && [touch view] != myTextView) {
        [myTextView resignFirstResponder];
    }
    [super touchesBegan:touches withEvent:event];
}

在文本视图外部点击视图控制器的视图,将关闭第一个响应者,关闭键盘.

Answer 2

使用UITableViews,Searchbar和键盘时我经常使用的另一种方法是,我认为你可以将它应用到文本字段

UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hideKeyboard)];
[self.tableView addGestureRecognizer:gestureRecognizer];
gestureRecognizer.cancelsTouchesInView = NO;  // this prevents the gesture recognizers to 'block' touches
[gestureRecognizer release];

然后,这是简单的回调函数

- (void)hideKeyboard {
    [myTextField resignFirstResponder];
}

希望能帮助到你

Answer 3

在我看来:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [touches anyObject];

    // pass touches up to viewController
    [self.nextResponder touchesBegan:touches withEvent:event];
}

在我的viewcontroller中:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    UITouch *touch = [[event allTouches] anyObject];
    if (keyboardShown && [touch view] != self.TextView) 
    {
         [self.TextView resignFirstResponder];
    }
    [super touchesBegan:touches withEvent:event];
}

- (void)keyboardWasShown:(NSNotification*)aNotification
{    
        keyboardShown = YES;
}