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，但它一直在崩溃，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

closeBarButtonItem.action = "close:"

func close(sender: UIButton!) {
    self.dismissViewControllerAnimated(true, completion: nil)
}

Answer 2

没有直接的方法可以做到这一点，因为如果您使用@selector(dismissViewControllerAnimated:completion:)，则会使用sender而不是动画BOOL和event而不是{{}调用它1}}阻止。这些都不是有效的参数。

如果你想缩短你的代码，你应该使用completion handler库，这将允许你添加事件处理程序直接控制。这是一个Objective-C库，因此可以通过JTTargetActionBlock

使用它

示例（尚未测试）：

Voice-Bridging-Header

将Selector调用到DismissViewController

2 个答案: