ios - 调用 Selector 到 DismissViewController

Question

如何使用选择器调用 self.dismissViewControllerAnimated(true, completion: nil);

    //MARK - closeBarButtonItem
    closeBarButtonItem = UIBarButtonItem();
    closeBarButtonItem.image = UIImage(named: "closeIcon");
    closeBarButtonItem.target = self;

我已经尝试了下面的选择器，但它一直崩溃说找不到选择器

    //NO SELECTOR FOUND CRASH
    closeBarButtonItem.action = "dismissViewControllerAnimated::";

    //NO SELECTOR FOUND CRASH
    closeBarButtonItem.action = "dismissViewControllerAnimated:true:";

    //NO SELECTOR FOUND CRASH
    closeBarButtonItem.action = "dismissViewControllerAnimated:completion:";

    //NO SELECTOR FOUND CRASH
    closeBarButtonItem.action = Selector("dismissViewControllerAnimated::");

    //NO SELECTOR FOUND CRASH
    closeBarButtonItem.action = Selector("dismissViewControllerAnimated:true:)";

    //NO SELECTOR FOUND CRASH
    closeBarButtonItem.action = Selector("dismissViewControllerAnimated:completion:)";

Answer 1

没有直接的方法来做到这一点，因为如果你使用 @selector(dismissViewControllerAnimated:completion:)，它会被 sender 调用而不是动画BOOL 和 event 而不是 completion handler block 。这些不是有效的论点。

如果你想缩短你的代码，你应该使用JTTargetActionBlock库，它允许你直接添加事件处理程序来控制。这是一个 Objective-C 库，所以用户可以通过 Voice-Bridging-Header

使用它

示例(尚未测试):

closeBarButtonItem.addEventHandler({(sender, event) in
    self.dismissViewControllerAnimated(true, completion: nil)

}, forControlEvent: UIControlEventTouchUpInside)