ios - 为什么我的程序总是说 "unrecognised selector sent to instance"？

Question

这是我的主要代码:

     @IBOutlet weak var avatar: UIImageView!
     @IBOutlet weak var nickname: UIButton!

    var tapGesture :UITapGestureRecognizer?

    self.tapGesture = UITapGestureRecognizer(target: self, action: "dealTap:")
    self.avatar.addGestureRecognizer(tapGesture!)

    nickname.addTarget(self, action: "dealModifyNickname:", forControlEvents: UIControlEvents.TouchUpInside)


    self.tapGesture = UITapGestureRecognizer(target: self, action: "dealTap:")
    //tapGesture?.numberOfTapsRequired = 1
    self.avatar.addGestureRecognizer(tapGesture!)

    nickname.addTarget(self, action: "dealModifyNickname:", forControlEvents: UIControlEvents.TouchUpInside)



//modify avatar
func dealTap(sender:AnyObject){
    println("dealTap,dealTap!!!")
    println("i am %x",self)
    Alterview.showMessage("a", delegate: self)
}

//modify nickname
func dealModifyNickname(sender:AnyObject){
    Alterview.showmessage("a", subtitle: "a", cancelbutton: "a", delegate:self)
}

我可以随时修改我的头像和昵称，它不会崩溃，但是一旦我点击其他空间(空白区域)，它就会崩溃。并且它说“-[__NSCFType dealTap:]:发送了无法识别的选择器到实例 0x15e72160"

Answer 1

您确实需要发布确切的消息，但我打赌这是因为您在 dealTap 中有 showMessage(大写 M)，在 dealModifyNickname 中有 showmessage(小写 m)。