ios - UIBarButton 的点击事件如何处理

Question

由于UIBarButton 不是继承自UIResponder/UIControl，UIBarButton 上的点击事件是如何工作的？

Answer 1

Just create the UIBarButtonItem's target and action properties directly.

UIBarButtonItem *barListBtn = [[UIBarButtonItem alloc] initWithTitle:@"yourTitle" 
                             style:UIBarButtonItemStylePlain 
                            target:self action:@selector(btnClicked:)];   
self.navigationItem.rightBarButtonItem = barListBtn;



-(void)btnClicked:(UIBarButtonItem*)btn 
{
NSLog(@"button tapped %@", btn.title);
}

选择 2

- (void) viewDidLoad
{
[super viewDidLoad];

// first we create a button and set it's properties
UIBarButtonItem *myButton = [[UIBarButtonItem alloc]init];
myButton.action = @selector(doTheThing);
myButton.title = @"Hello";
myButton.target = self;

// then we add the button to the navigation bar
self.navigationItem.rightBarButtonItem = myButton;


}


// method called via selector
- (void) doTheThing {

NSLog(@"Doing the thing");

}

一些额外的 Sample