滑动到删除和“更多”按钮(就像在iOS 7上的邮件应用程序中一样)

时间:2013-06-22 19:15:09

标签: ios uitableview user-interface cocoa-touch swipe-gesture

当用户在表格视图中滑动单元格时(如ios 7中的邮件应用程序),如何创建“更多”按钮

我一直在这里和Cocoa Touch论坛上寻找这些信息,但我似乎无法找到答案,我希望比我更聪明的人能给我一个解决方案。

我希望当用户滑动表格视图单元格时,显示多个编辑按钮(默认为删除按钮)。 在适用于iOS 7的邮件应用中,您可以滑动删除,但会显示一个“更多”按钮。

enter image description here

20 个答案:

答案 0 :(得分:125)

如何实施

看起来iOS 8打开了这个API。 Beta 2中提供了此类功能的提示。

要使某些工作正常,请在UITableView的委托上实现以下两种方法以获得所需的效果(请参阅gist以获取示例)。

- tableView:editActionsForRowAtIndexPath:
- tableView:commitEditingStyle:forRowAtIndexPath:


已知问题

文档说tableView:commitEditingStyle:forRowAtIndexPath是:

  

“未使用UITableViewRowAction调用编辑操作 - 将调用操作的处理程序。”

然而,没有它,滑动不起作用。即使方法存根是空白的,它现在仍然需要它。这显然是beta 2中的一个错误。


来源

https://twitter.com/marksands/status/481642991745265664 https://gist.github.com/marksands/76558707f583dbb8f870

原始答案:https://stackoverflow.com/a/24540538/870028


更新

使用此示例代码(在Swift中):http://dropbox.com/s/0fvxosft2mq2v5m/DeleteRowExampleSwift.zip

示例代码在MasterViewController.swift中包含这个易于理解的方法,只需使用此方法就可以获得OP屏幕截图中显示的行为:

override func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]? {

    var moreRowAction = UITableViewRowAction(style: UITableViewRowActionStyle.Default, title: "More", handler:{action, indexpath in
        println("MORE•ACTION");
    });
    moreRowAction.backgroundColor = UIColor(red: 0.298, green: 0.851, blue: 0.3922, alpha: 1.0);

    var deleteRowAction = UITableViewRowAction(style: UITableViewRowActionStyle.Default, title: "Delete", handler:{action, indexpath in
        println("DELETE•ACTION");
    });

    return [deleteRowAction, moreRowAction];
}

答案 1 :(得分:119)

我创建了一个新的库来实现可交换按钮,它支持各种转换和可扩展按钮,如iOS 8邮件应用程序。

https://github.com/MortimerGoro/MGSwipeTableCell

该库兼容所有不同的创建UITableViewCell的方法,并在iOS 5,iOS 6,iOS 7和iOS 8上进行测试。

这是一些过渡的样本:

边境过渡:

Border transition

剪辑转换

Clip transition

3D过渡:

enter image description here

答案 2 :(得分:68)

约翰尼的回答是正确的回答。我只是在objective-c中添加以下内容,以使初学者(以及那些拒绝学习Swift语法的人)更清楚:)

确保声明uitableviewdelegate并使用以下方法:

 -(NSArray *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath {
 UITableViewRowAction *button = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"Button 1" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath)
    {
        NSLog(@"Action to perform with Button 1");
    }];
    button.backgroundColor = [UIColor greenColor]; //arbitrary color
    UITableViewRowAction *button2 = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"Button 2" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath)
                                    {
                                        NSLog(@"Action to perform with Button2!");
                                    }];
    button2.backgroundColor = [UIColor blueColor]; //arbitrary color

    return @[button, button2]; //array with all the buttons you want. 1,2,3, etc...
}

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
// you need to implement this method too or nothing will work:

}
 - (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
    {
        return YES; //tableview must be editable or nothing will work...
    }

答案 3 :(得分:25)

这是(相当荒谬)私有API。

以下两种方法是私有的并发送到UITableView的委托:

-(NSString *)tableView:(UITableView *)tableView titleForSwipeAccessoryButtonForRowAtIndexPath:(NSIndexPath *)indexPath;
-(void)tableView:(UITableView *)tableView swipeAccessoryButtonPushedForRowAtIndexPath:(NSIndexPath *)indexPath;

他们非常自我解释。

答案 4 :(得分:23)

为了改进Johnny的答案,现在可以使用公共API完成此操作,如下所示:

func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? {

    let moreRowAction = UITableViewRowAction(style: UITableViewRowActionStyle.default, title: "More", handler:{action, indexpath in
        print("MORE•ACTION");
    });
    moreRowAction.backgroundColor = UIColor(red: 0.298, green: 0.851, blue: 0.3922, alpha: 1.0);

    let deleteRowAction = UITableViewRowAction(style: UITableViewRowActionStyle.default, title: "Delete", handler:{action, indexpath in
        print("DELETE•ACTION");
    });

    return [deleteRowAction, moreRowAction];
}

答案 5 :(得分:17)

我希望你不能等到苹果给你什么,你需要什么?所以这是我的选择。

创建自定义单元格。有两个uiviews

1. upper
2. lower

在下方视图中,添加您需要的按钮。只是处理它的行为     像任何其他IBActions一样。你可以决定动画的时间,风格等等。

现在在上方视图中添加一个uiswipegesture,并在滑动手势上显示您的下方视图。我以前做过这个,就我而言,它是最简单的选择。

希望有所帮助。

答案 6 :(得分:7)

使用标准SDK无法做到这一点。但是,有各种第三方解决方案或多或少地模仿Mail.app中的行为。其中一些(例如MCSwipeTableViewCellDAContextMenuTableViewControllerRMSwipeTableViewCell)使用手势识别器检测滑动,其中一些(例如SWTableViewCell)将第二个UISScrollView置于标准{{1}以下(UITableViewCellScrollView的私有子视图),其中一些修改了UITableViewCell的行为。

我喜欢最后一种方法,因为触摸处理感觉最自然。具体来说,MSCMoreOptionTableViewCell是好的。您的选择可能会根据您的具体需求而有所不同(无论您是否需要从左到右的平底锅,是否需要iOS 6兼容性等)。另请注意,大多数这些方法都有负担:如果Apple在UITableViewCellScrollView子视图层次结构中进行更改,它们很容易在未来的iOS版本中中断。

答案 7 :(得分:7)

不使用任何库的Swift 3版本代码:

import UIKit

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

    @IBOutlet weak var tableView: UITableView!

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        tableView.tableFooterView = UIView(frame: CGRect.zero) //Hiding blank cells.
        tableView.separatorInset = UIEdgeInsets.zero
        tableView.dataSource = self
        tableView.delegate = self
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

        return 4
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        let cell: UITableViewCell = tableView.dequeueReusableCell(withIdentifier: "tableCell", for: indexPath)

        return cell
    }

    //Enable cell editing methods.
    func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {

        return true
    }

    func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {

    }

    func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {

        let more = UITableViewRowAction(style: .normal, title: "More") { action, index in
            //self.isEditing = false
            print("more button tapped")
        }
        more.backgroundColor = UIColor.lightGray

        let favorite = UITableViewRowAction(style: .normal, title: "Favorite") { action, index in
            //self.isEditing = false
            print("favorite button tapped")
        }
        favorite.backgroundColor = UIColor.orange

        let share = UITableViewRowAction(style: .normal, title: "Share") { action, index in
            //self.isEditing = false
            print("share button tapped")
        }
        share.backgroundColor = UIColor.blue

        return [share, favorite, more]
    }

}

答案 8 :(得分:6)

您需要子类UITableViewCell和子类方法willTransitionToState:(UITableViewCellStateMask)state,只要用户刷新单元格就会调用它。 state标志会告诉您是否显示删除按钮,并在那里显示/隐藏您的更多按钮。

不幸的是,此方法既不提供“删除”按钮的宽度也不提供动画时间。所以你需要观察者和将更多按钮的框架和动画时间硬编码到代码中(我个人认为Apple需要对此做些什么)。

答案 9 :(得分:4)

快速编程

func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
  if editingStyle == UITableViewCellEditingStyle.Delete {
    deleteModelAt(indexPath.row)
    self.tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Automatic)
  }
  else if editingStyle == UITableViewCellEditingStyle.Insert {
    println("insert editing action")
  }
}

func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]? {
  var archiveAction = UITableViewRowAction(style: .Default, title: "Archive",handler: { (action: UITableViewRowAction!, indexPath: NSIndexPath!) in
        // maybe show an action sheet with more options
        self.tableView.setEditing(false, animated: false)
      }
  )
  archiveAction.backgroundColor = UIColor.lightGrayColor()

  var deleteAction = UITableViewRowAction(style: .Normal, title: "Delete",
      handler: { (action: UITableViewRowAction!, indexPath: NSIndexPath!) in
        self.deleteModelAt(indexPath.row)
        self.tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Automatic);
      }
  );
  deleteAction.backgroundColor = UIColor.redColor()

  return [deleteAction, archiveAction]
}

func deleteModelAt(index: Int) {
  //... delete logic for model
}

答案 10 :(得分:3)

这可以帮助你。

-(NSArray *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath {
 UITableViewRowAction *button = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"Button 1" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath)
    {
        NSLog(@"Action to perform with Button 1");
    }];
    button.backgroundColor = [UIColor greenColor]; //arbitrary color
    UITableViewRowAction *button2 = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"Button 2" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath)
                                    {
                                        NSLog(@"Action to perform with Button2!");
                                    }];
    button2.backgroundColor = [UIColor blueColor]; //arbitrary color

    return @[button, button2]; //array with all the buttons you want. 1,2,3, etc...
}

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
// you need to implement this method too or nothing will work:

}
 - (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
    {
        return YES; //tableview must be editable or nothing will work...
    }

答案 11 :(得分:3)

斯威夫特4& iOs 11 +

@available(iOS 11.0, *)
override func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {

    let delete = UIContextualAction(style: .destructive, title: "Delete") { _, _, handler in

        handler(true)
        // handle deletion here
    }

    let more = UIContextualAction(style: .normal, title: "More") { _, _, handler in

        handler(true)
        // handle more here
    }

    return UISwipeActionsConfiguration(actions: [delete, more])
}

答案 12 :(得分:3)

从iOS 11开始,这在UITableViewDelegate公开发布。这是一些示例代码:

- (UISwipeActionsConfiguration *)tableView:(UITableView *)tableView trailingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath {
    UIContextualAction *delete = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleDestructive
                                                                         title:@"DELETE"
                                                                       handler:^(UIContextualAction * _Nonnull action, __kindof UIView * _Nonnull sourceView, void (^ _Nonnull completionHandler)(BOOL)) {
                                                                           NSLog(@"index path of delete: %@", indexPath);
                                                                           completionHandler(YES);
                                                                       }];

    UIContextualAction *rename = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleNormal
                                                                         title:@"RENAME"
                                                                       handler:^(UIContextualAction * _Nonnull action, __kindof UIView * _Nonnull sourceView, void (^ _Nonnull completionHandler)(BOOL)) {
                                                                           NSLog(@"index path of rename: %@", indexPath);
                                                                           completionHandler(YES);
                                                                       }];

    UISwipeActionsConfiguration *swipeActionConfig = [UISwipeActionsConfiguration configurationWithActions:@[rename, delete]];
    swipeActionConfig.performsFirstActionWithFullSwipe = NO;

    return swipeActionConfig;
}

同样可用:

- (UISwipeActionsConfiguration *)tableView:(UITableView *)tableView leadingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath;

文档:https://developer.apple.com/documentation/uikit/uitableviewdelegate/2902367-tableview?language=objc

答案 13 :(得分:3)

实际Swift 3回答

这是您需要的唯一功能。您不需要CanEdit或CommitEditingStyle函数来执行自定义操作。

func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
    let action1 = UITableViewRowAction(style: .default, title: "Action1", handler: {
        (action, indexPath) in
        print("Action1")
    })
    action1.backgroundColor = UIColor.lightGray
    let action2 = UITableViewRowAction(style: .default, title: "Action2", handler: {
        (action, indexPath) in
        print("Action2")
    })
    return [action1, action2]
}

答案 14 :(得分:3)

我希望在我的应用程序中添加相同的功能,经过这么多不同的教程(raywenderlich是最好的DIY解决方案)之后,我发现Apple有自己的override func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]? { // 1 var shareAction = UITableViewRowAction(style: UITableViewRowActionStyle.Default, title: "Share" , handler: { (action:UITableViewRowAction!, indexPath:NSIndexPath!) -> Void in // 2 let shareMenu = UIAlertController(title: nil, message: "Share using", preferredStyle: .ActionSheet) let twitterAction = UIAlertAction(title: "Twitter", style: UIAlertActionStyle.Default, handler: nil) let cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel, handler: nil) shareMenu.addAction(twitterAction) shareMenu.addAction(cancelAction) self.presentViewController(shareMenu, animated: true, completion: nil) }) // 3 var rateAction = UITableViewRowAction(style: UITableViewRowActionStyle.Default, title: "Rate" , handler: { (action:UITableViewRowAction!, indexPath:NSIndexPath!) -> Void in // 4 let rateMenu = UIAlertController(title: nil, message: "Rate this App", preferredStyle: .ActionSheet) let appRateAction = UIAlertAction(title: "Rate", style: UIAlertActionStyle.Default, handler: nil) let cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel, handler: nil) rateMenu.addAction(appRateAction) rateMenu.addAction(cancelAction) self.presentViewController(rateMenu, animated: true, completion: nil) }) // 5 return [shareAction,rateAction] } 类,这非常方便。

您必须将Tableview的锅炉方法更改为:

+ (void)setupDeleteRowActionStyleForUserCell {

    UIFont *font = [UIFont fontWithName:@"AvenirNext-Regular" size:19];

    NSDictionary *attributes = @{NSFontAttributeName: font,
                      NSForegroundColorAttributeName: [UIColor whiteColor]};

    NSAttributedString *attributedTitle = [[NSAttributedString alloc] initWithString: @"DELETE"
                                                                          attributes: attributes];

    /*
     * We include UIView in the containment hierarchy because there is another button in UserCell that is a direct descendant of UserCell that we don't want this to affect.
     */
    [[UIButton appearanceWhenContainedIn:[UIView class], [UserCell class], nil] setAttributedTitle: attributedTitle
                                                                                          forState: UIControlStateNormal];
}

您可以在This Site上找到有关此内容的更多信息。 Apple的own documentation对于更改背景颜色非常有用:

  

操作按钮的背景颜色。

     

声明OBJECTIVE-C @property(非原子,复制)UIColor   * backgroundColor Discussion使用此属性指定按钮的背景颜色。如果没有为其指定值   这个属性,UIKit根据中的值分配默认颜色   风格属性。

     

可用性适用于iOS 8.0及更高版本。

如果你想改变按钮的字体,那就有点棘手了。我在SO上看过another post。为了提供代码和链接,这里是他们使用的代码。您必须更改按钮的外观。您必须对tableviewcell进行具体参考,否则您将在整个应用中更改按钮的外观(我不想这样,但您可能,我不会'知道:))

目标C:

    //create your attributes however you want to
    let attributes = [NSFontAttributeName: UIFont.systemFontOfSize(UIFont.systemFontSize())] as Dictionary!            

   //Add more view controller types in the []
    UIButton.appearanceWhenContainedInInstancesOfClasses([ViewController.self])

夫特:

func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
    var shareAction:UITableViewRowAction = UITableViewRowAction(style: .default, title: "Share", handler: {(action, cellIndexpath) -> Void in
        let shareMenu = UIAlertController(title: nil, message: "Share using", preferredStyle: .actionSheet)

        let twitterAction = UIAlertAction(title: "Twitter", style: .default, handler: nil)
        let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: nil)

        shareMenu.addAction(twitterAction)
        shareMenu.addAction(cancelAction)


        self.present(shareMenu,animated: true, completion: nil)
    })

    var rateAction:UITableViewRowAction = UITableViewRowAction(style: .default, title: "Rate" , handler: {(action, cellIndexpath) -> Void in
        // 4
        let rateMenu = UIAlertController(title: nil, message: "Rate this App", preferredStyle: .actionSheet)

        let appRateAction = UIAlertAction(title: "Rate", style: .default, handler: nil)
        let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: nil)

        rateMenu.addAction(appRateAction)
        rateMenu.addAction(cancelAction)


        self.present(rateMenu, animated: true, completion: nil)
    })
    // 5
    return [shareAction,rateAction]
}

这是最简单,最流线型的版本恕我直言。希望它有所帮助。

更新:这是Swift 3.0版本:

{{1}}

答案 15 :(得分:2)

我使用 tableViewCell 来显示多个数据,在单元格上从右向左滑动()后,它将显示两个按钮Approve and reject,有两种方法,第一种是ApproveFunc,它需要一个参数,另一个是RejectFunc,它也接受一个参数。

enter image description here

func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
        let Approve = UITableViewRowAction(style: .normal, title: "Approve") { action, index in

            self.ApproveFunc(indexPath: indexPath)
        }
        Approve.backgroundColor = .green

        let Reject = UITableViewRowAction(style: .normal, title: "Reject") { action, index in

            self.rejectFunc(indexPath: indexPath)
        }
        Reject.backgroundColor = .red



        return [Reject, Approve]
    }

    func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
        return true
    }

    func ApproveFunc(indexPath: IndexPath) {
        print(indexPath.row)
    }
    func rejectFunc(indexPath: IndexPath) {
        print(indexPath.row)
    }

答案 16 :(得分:1)

有一个名为SwipeCellKit的神奇图书馆,它应该获得更多的认可。在我看来,它比MGSwipeTableCell更酷。后者并没有完全复制Mail应用程序单元格的行为,而SwipeCellKit则完成。 Have a look

答案 17 :(得分:1)

Swift 4

func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
    let delete = UIContextualAction(style: .destructive, title: "Delete") { (action, sourceView, completionHandler) in
        print("index path of delete: \(indexPath)")
        completionHandler(true)
    }
    let rename = UIContextualAction(style: .normal, title: "Edit") { (action, sourceView, completionHandler) in
        print("index path of edit: \(indexPath)")
        completionHandler(true)
    }
    let swipeActionConfig = UISwipeActionsConfiguration(actions: [rename, delete])
    swipeActionConfig.performsFirstActionWithFullSwipe = false
    return swipeActionConfig
}

答案 18 :(得分:1)

这是一种有点脆弱的做法,不涉及私有API或构建自己的系统。你正在对冲苹果公司没有打破这一点的赌注,希望他们能够发布一个API,你可以用这几行替换代码。

  1. KVO self.contentView.superview.layer.sublayer。在init中执行此操作。这是UIScrollView的图层。您不能使用KVO'子视图'。
  2. 当子视图更改时,在scrollview.subviews中找到删除确认视图。这在observe回调中完成。
  3. 将该视图的大小加倍,并在其唯一的子视图的左侧添加UIButton。这也在observe回调中完成。删除确认视图的唯一子视图是删除按钮。
  4. (可选)UIButton事件应查找self.superview,直到找到UITableView,然后调用您创建的数据源或委托方法,例如tableView:commitCustomEditingStyle:forRowAtIndexPath:。您可以使用[tableView indexPathForCell:self]。
  5. 找到单元格的indexPath

    这还要求您实现标准表视图编辑委托回调。

    static char kObserveContext = 0;
    
    @implementation KZTableViewCell {
        UIScrollView *_contentScrollView;
        UIView *_confirmationView;
        UIButton *_editButton;
        UIButton *_deleteButton;
    }
    
    - (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
        self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
        if (self) {
            _contentScrollView = (id)self.contentView.superview;
    
            [_contentScrollView.layer addObserver:self
                 forKeyPath:@"sublayers"
                    options:0
                    context:&kObserveContext];
    
            _editButton = [UIButton new];
            _editButton.backgroundColor = [UIColor lightGrayColor];
            [_editButton setTitle:@"Edit" forState:UIControlStateNormal];
            [_editButton addTarget:self
                            action:@selector(_editTap)
                  forControlEvents:UIControlEventTouchUpInside];
    
        }
        return self;
    }
    
    -(void)dealloc {
        [_contentScrollView.layer removeObserver:self forKeyPath:@"sublayers" context:&kObserveContext];
    }
    
    -(void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
        if(context != &kObserveContext) {
            [super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
            return;
        }
        if(object == _contentScrollView.layer) {
            for(UIView * view in _contentScrollView.subviews) {
                if([NSStringFromClass(view.class) hasSuffix:@"ConfirmationView"]) {
                    _confirmationView = view;
                    _deleteButton = [view.subviews objectAtIndex:0];
                    CGRect frame = _confirmationView.frame;
                    CGRect frame2 = frame;
                    frame.origin.x -= frame.size.width;
                    frame.size.width *= 2;
                    _confirmationView.frame = frame;
    
                    frame2.origin = CGPointZero;
                    _editButton.frame = frame2;
                    frame2.origin.x += frame2.size.width;
                    _deleteButton.frame = frame2;
                    [_confirmationView addSubview:_editButton];
                    break;
                }
            }
            return;
        }
    }
    
    -(void)_editTap {
        UITableView *tv = (id)self.superview;
        while(tv && ![tv isKindOfClass:[UITableView class]]) {
            tv = (id)tv.superview;
        }
        id<UITableViewDelegate> delegate = tv.delegate;
        if([delegate respondsToSelector:@selector(tableView:editTappedForRowWithIndexPath:)]) {
            NSIndexPath *ip = [tv indexPathForCell:self];
            // define this in your own protocol
            [delegate tableView:tv editTappedForRowWithIndexPath:ip];
        }
    }
    @end
    

答案 19 :(得分:0)

这是一个简单的解决方案。它能够在UITableViewCell中显示和隐藏自定义UIView。 显示逻辑包含在从UITableViewCell,BaseTableViewCell扩展的类中。

BaseTableViewCell.h

#import <UIKit/UIKit.h>

@interface BaseTableViewCell : UITableViewCell

@property(nonatomic,strong)UIView* customView;

-(void)showCustomView;

-(void)hideCustomView;

@end

BaseTableViewCell.M

#import "BaseTableViewCell.h"

@interface BaseTableViewCell()
{
    BOOL _isCustomViewVisible;
}

@end

@implementation BaseTableViewCell

- (void)awakeFromNib {
    // Initialization code
}

-(void)prepareForReuse
{
    self.customView = nil;
    _isCustomViewVisible = NO;
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];

    // Configure the view for the selected state
}

-(void)showCustomView
{
    if(nil != self.customView)
    {
        if(!_isCustomViewVisible)
        {
            _isCustomViewVisible = YES;

            if(!self.customView.superview)
            {
                CGRect frame = self.customView.frame;
                frame.origin.x = self.contentView.frame.size.width;
                self.customView.frame = frame;
                [self.customView willMoveToSuperview:self.contentView];
                [self.contentView addSubview:self.customView];
                [self.customView didMoveToSuperview];
            }

            __weak BaseTableViewCell* blockSelf = self;
            [UIView animateWithDuration:.5 animations:^(){

                for(UIView* view in blockSelf.contentView.subviews)
                {
                    CGRect frame = view.frame;
                    frame.origin.x = frame.origin.x - blockSelf.customView.frame.size.width;
                    view.frame = frame;
                }
            }];
        }
    }
}

-(void)hideCustomView
{
    if(nil != self.customView)
    {
        if(_isCustomViewVisible)
        {
            __weak BaseTableViewCell* blockSelf = self;
            _isCustomViewVisible = NO;
            [UIView animateWithDuration:.5 animations:^(){
                for(UIView* view in blockSelf.contentView.subviews)
                {
                    CGRect frame = view.frame;
                    frame.origin.x = frame.origin.x + blockSelf.customView.frame.size.width;
                    view.frame = frame;
                }
            }];
        }
    }
}

@end

要获得此功能,只需从BaseTableViewCell扩展表视图单元格。

接着, 在实现UITableViewDelegate的UIViewController内部,创建两个手势识别器来处理左右滑动。

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    [self.tableView registerNib:[UINib nibWithNibName:CUSTOM_CELL_NIB_NAME bundle:nil] forCellReuseIdentifier:CUSTOM_CELL_ID];

    UISwipeGestureRecognizer* leftSwipeRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleLeftSwipe:)];
    leftSwipeRecognizer.direction = UISwipeGestureRecognizerDirectionLeft;
    [self.tableView addGestureRecognizer:leftSwipeRecognizer];

    UISwipeGestureRecognizer* rightSwipeRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleRightSwipe:)];
    rightSwipeRecognizer.direction = UISwipeGestureRecognizerDirectionRight;
    [self.tableView addGestureRecognizer:rightSwipeRecognizer];
}

添加两个滑动处理程序

- (void)handleLeftSwipe:(UISwipeGestureRecognizer*)recognizer
{
    CGPoint point = [recognizer locationInView:self.tableView];
    NSIndexPath* index = [self.tableView indexPathForRowAtPoint:point];

    UITableViewCell* cell = [self.tableView cellForRowAtIndexPath:index];

    if([cell respondsToSelector:@selector(showCustomView)])
    {
        [cell performSelector:@selector(showCustomView)];
    }
}

- (void)handleRightSwipe:(UISwipeGestureRecognizer*)recognizer
{
    CGPoint point = [recognizer locationInView:self.tableView];
    NSIndexPath* index = [self.tableView indexPathForRowAtPoint:point];

    UITableViewCell* cell = [self.tableView cellForRowAtIndexPath:index];

    if([cell respondsToSelector:@selector(hideCustomView)])
    {
        [cell performSelector:@selector(hideCustomView)];
    }
}

现在,在UITableViewDelegate的cellForRowAtIndexPath中,您可以创建自定义UIView并将其附加到出列单元格。

-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    CustomCellTableViewCell* cell = (CustomCellTableViewCell*)[tableView dequeueReusableCellWithIdentifier:@"CustomCellTableViewCell" forIndexPath:indexPath];

    NSArray* nibViews = [[NSBundle mainBundle] loadNibNamed:@"CellCustomView"
                                                      owner:nil
                                                    options:nil];

    CellCustomView* customView = (CellCustomView*)[ nibViews objectAtIndex: 0];

    cell.customView = customView;

    return cell;
}

当然,这种加载自定义UIView的方式仅适用于此示例。根据需要进行管理。