当用户在表格视图中滑动单元格时,如何创建一个“更多”按钮(就像ios 7中的邮件应用程序)

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

我希望当用户滑动一个表格视图单元格时,显示多个编辑按钮(默认是删除按钮)。 在iOS 7的邮件应用程序中,你可以滑动删除,但会出现一个“更多”按钮。


当前回答

这里有一个简单的解决办法。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。米

#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扩展您的表视图单元格。

接下来, 在UIViewController中,它实现了UITableViewDelegate,创建了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];
}

然后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,你可以创建自定义UIView并将它附加到dequeuedcell中。

-(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的方式只适用于这个例子。按照您的意愿管理它。

其他回答

有一个很棒的库叫做SwipeCellKit,它应该得到更多的认可。在我看来,它比MGSwipeTableCell更酷。后者不能完全复制邮件应用程序单元格的行为,而SwipeCellKit可以。看一看

如何实施

看起来iOS 8打开了这个API。在Beta 2中有这样的功能提示。

为了让某些东西工作,在你的UITableView的委托上实现以下两个方法以获得所需的效果(参见示例的要点)。

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

已知的问题

文档说tableView:commitEditingStyle:forRowAtIndexPath是:

使用uitableviewwroaction的编辑操作不会被调用——操作的处理程序将被调用。

然而,没有它,滑动就不能工作。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bug。

来源

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

原答案:https://stackoverflow.com/a/24540538/870028

更新:

示例代码与此工作(在Swift中):http://dropbox.com/s/0fvxosft2mq2v5m/DeleteRowExampleSwift.zip

示例代码在MasterViewController.swift中包含了这个易于遵循的方法,通过这个方法你可以得到OP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];
}

这里有一个简单的解决办法。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。米

#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扩展您的表视图单元格。

接下来, 在UIViewController中,它实现了UITableViewDelegate,创建了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];
}

然后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,你可以创建自定义UIView并将它附加到dequeuedcell中。

-(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的方式只适用于这个例子。按照您的意愿管理它。

我正在寻找添加相同的功能到我的应用程序,经过这么多不同的教程(raywenderlich是最好的DIY解决方案),我发现苹果有自己的UITableViewRowActionclass,这是非常方便的。

你必须把Tableview的boilerpoint方法改成这样:

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]
  }

你可以在这个网站上找到更多信息。苹果自己的文档对于改变背景颜色非常有用:

操作按钮的背景色。 声明OBJECTIVE-C @property(nonatomic, copy) UIColor 使用此属性指定按钮的背景色。如果没有指定值 属性中的值为UIKit分配一个默认颜色 样式属性。 可用性iOS 8.0及以上版本支持。

如果你想改变按钮的字体,这就有点棘手了。我看过另一个关于SO的帖子。为了提供代码和链接,这里是他们在那里使用的代码。你必须改变按钮的外观。你必须对tableviewcell做一个特定的引用,否则你会在整个应用程序中改变按钮的外观(我不想那样,但你可能会,我不知道:))

Objective - C:

+ (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];
}

迅速:

    //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])

恕我直言,这是最简单、最流畅的版本。希望能有所帮助。

更新:这是Swift 3.0版本:

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]
}

我使用tableViewCell来显示多个数据,在一个单元格上从右向左滑动()后,它将显示两个按钮批准和拒绝,有两个方法,第一个是ApproveFunc,它需要一个参数,另一个是RejectFunc,它也需要一个参数。

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)
    }