我的可拖动按钮使用这些事件进行拖动:[buttonaddTarget:selfaction:@selector(beganDragging:)forControlEvents:UIControlEventTouchDown];[buttonaddTarget:selfaction:@selector(wasDragged:withEvent:)forControlEvents:UIControlEventTouchDragOutside|UIControlEventTouchDragInside];[buttonaddTarget:selfaction:@selector(exitDr

我有一个UIButton，我想在上面添加一个存储到NSArray中的目标操作。我想要这样的东西，-(IBAction)myAction{//DoSomething}//AddmyActiontomyArray[myArrayaddObject:myAction];//AddtargetonmyButton[myButtonaddTarget:selfaction:@selector([myArrayobjectAtIndex:0])forControlEvents:UIControlEventTouchUpInside];我正在尝试，但它显示错误消息，例如ExpectedIdentif

在我的简单程序中，按钮有问题。按钮是View的subview，View是myViewController.view的subview。此按钮是动态创建的，但它的操作不起作用。如何发送事件？这是我的代码。//ViewController-(id)initWithNibName:(NSString*)nibNameOrNilbundle:(NSBundle*)nibBundleOrNil{bookCount=0;self=[superinitWithNibName:nibNameOrNilbundle:nibBundleOrNil];if(self){UIView*subview=[[UIV

我正在实现UIButton并且我的UIControlEventTouchUpInside事件没有触发，即使UIControlEventTouchDown确实触发了。UIButton*btnClose=[UIButtonbuttonWithType:UIButtonTypeCustom];NSString*filePathImage=@"img.png";NSString*filePathImageTap=@"img-tap.png";UIImage*buttonImage=[UIImageimageWithContentsOfFile:filePathImage];UIImage*bu