我如何识别 self.editButtonItem 按钮的单击事件？

Question

我使用代码将 UINavigationController 的左栏按钮设置为编辑按钮，

leftBarButton = self.editButtonItem;

我想更改其他按钮相对于编辑按钮的单击操作的一些禁用/启用属性。

如何判断编辑按钮是否被按下？

Answer 1

编辑按钮的操作会向您的视图控制器发送 setEditing:animated 消息。在您的子类中重写此设置，以便在进入或离开编辑模式时执行其他操作。

请务必在最后调用 super 实现来管理到编辑视图的其余转换。

Answer 2

所以最后我得到了解决方案......

-(void)setEditing:(BOOL)editing animated:(BOOL)animated {

    [super setEditing:editing animated:animated];

    if(editing) {
        //Do something for edit mode
    }

    else {
        //Do something for non-edit mode
    }

}

这个方法将被调用，而不改变 self.editButtonItem 按钮的原始行为。

Answer 3

在斯威夫特中：

@IBOutlet weak var tableView: UITableView!

override func viewDidLoad() {
    super.viewDidLoad()

   ....
    self.navigationItem.leftBarButtonItem = self.editButtonItem()
}

override func setEditing(editing: Bool, animated: Bool) {
    // Toggles the edit button state
    super.setEditing(editing, animated: animated)
    // Toggles the actual editing actions appearing on a table view
    tableView.setEditing(editing, animated: true)
}

Answer 4

在 Swift 中，您可以按照以下方法操作：

  @IBOutlet weak var tableView: UITableView!

    override func viewDidLoad() {
        super.viewDidLoad()
        navigationItem.rightBarButtonItem = editButtonItem()
    }

   override func setEditing(editing: Bool, animated: Bool){

        super.setEditing(editing, animated: animated)
        tableView.setEditing(editing, animated: true)


    }

Answer 5

UIBarButtonItem *barBut=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemEdit target:self action:@selector(doSomething)];


self.navigationItem.leftBarButtonItem=barBut;

[barBut release];


.h
-(void)doSomething;

.m 

-(void)doSomething{

    NSLog(@"dooooooooooooo");
        //ur stuff
}

更新：

 - (void)setEditing:(BOOL)editing animated:(BOOL)animated 

将被称为

editButtonItem

Returns a bar button item that toggles its title and associated state between Edit and Done.

- (UIBarButtonItem *)editButtonItem

Discussion
If one of the custom views of the navigationItem property is set to the returned object, the associated navigation bar displays an Edit button if editing is NO and a Done button if editing is YES. The default button action invokes the setEditing:animated: method.

    Availability
    Available in iOS 2.0 and later.

    See Also
    @property editing

    – setEditing:animated:


    Declared In
    UIViewController.h

http://developer .apple.com/library/ios/#DOCUMENTATION/UIKit/Reference/UIViewController_Class/Reference/Reference.html