将 UITapGestureRecognizer 添加到 UITextView 而不阻止 textView 触摸

Question

如何将 UITapGestureRecognizer 添加到 UITextView，但仍然可以像 normal 那样接触到 UITextView？

目前，只要我向我的 textView 添加自定义手势，它就会阻止点击 UITextView 默认操作，例如定位光标。

var tapTerm:UITapGestureRecognizer = UITapGestureRecognizer()

override func viewDidLoad() {
    tapTerm = UITapGestureRecognizer(target: self, action: "tapTextView:")
    textView.addGestureRecognizer(tapTerm)
}

func tapTextView(sender:UITapGestureRecognizer) {
    println("tapped term – but blocking the tap for textView :-/")
…
}

我如何处理点击但保持任何 textView 行为（如光标定位）不变？

Answer 1

要做到这一点，让您的视图控制器采用 UIGestureRecognizerDelegate 并覆盖应该同时识别手势识别方法，例如：

override func viewDidLoad() {
    tapTerm = UITapGestureRecognizer(target: self, action: "tapTextView:")
    tapTerm.delegate = self
    textView.addGestureRecognizer(tapTerm)
}

func gestureRecognizer(gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWithGestureRecognizer otherGestureRecognizer: UIGestureRecognizer) -> Bool {

    return true
}

Answer 2

如果有人来这里寻找@Zell B. 在 Objective C 中的答案，代码如下：

- (void)viewDidLoad {
    [super viewDidLoad];

    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(textViewTapped:)];
    tap.delegate = self; 
    tap.numberOfTapsRequired = 1; 
   [self.textView addGestureRecognizer:tap];
}   

- (void)textViewTapped:(UITapGestureRecognizer *)tap {
    //DO SOMTHING 
}

#pragma mark - Gesture recognizer delegate

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
    return YES; 
}

PS: 别忘了

Answer 3

Swift 4.2
以下步骤允许我通过点击退出全屏 UITextView，同时允许滚动 UITextView 的内容：

已断开 UIGestureRecognizer 与 UITableView 的连接。
制作了一个 CustomTextView：UITextView。
向带有 CustomTextView 的特定 UIViewController 添加了一个 'sender' 变量。
'Touches Ended...'
在发送者 UIViewController 中调用 excape 函数。

class CustomTextView: UITextView {
    var sender: DocViewController?

    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        if let controller = sender {
            controller.handleSwipeGesture()
        }
    }
}

我可以滚动 UITextView 的内容，也可以点击退出。
'sender' 在创建时从宿主 UIViewController 设置。

将 UITapGestureRecognizer 添加到 UITextView 而不阻止 textView 触摸

Add UITapGestureRecognizer to UITextView without blocking textView touches

uitextview

ios

uitapgesturerecognizer

swift