UITableViewCell左滑时自定义编辑视图。使用Objective-C或Swift实现。

Question

UITableViewCell左滑时自定义编辑视图。使用Objective-C或Swift实现。

iosobjective-cswiftuitableviewswipe

81

如何在 iOS7 UITableView 中使用 Objective C 制作类似 Evernote 或 Apple Reminders 应用程序的自定义编辑视图，实现左滑功能。

我尝试设置自定义的 editingAccessoryView，但没有成功。

Evernote 编辑视图：

enter image description here Reminders 编辑视图：

enter image description here

我的当前代码是

- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
    return YES;
}

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        NSLog(@"delete");
    }
}

我已经尝试使用以下方式解决问题：(UITableViewController.h)

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    //make cell

    UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
    [view setBackgroundColor:[UIColor greenColor]];
    //add Buttons to view

    cell.editingAccessoryView = view;

    return cell;
}

同样适用于：(UITableViewCell)

- (void)willTransitionToState:(UITableViewCellStateMask)state;
- (void)setEditing:(BOOL)editing animated:(BOOL)animated;
- (UIView*)editingAccessoryView;

- ugoarangino

我们能否固定侧滑按钮的高度？例如：我的单元格高度为150，我只想显示50.0f的按钮。这可行吗？ - Suhas Arvind Patil

13个回答

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- Dmytro Onyshchuk · Answer 1

你应该使用MGSwipeTableCell来自定义滑动单元格。

- sudhakkar k · Answer 2

在表视图中的自定义单元格上创建一个视图，并将PanGestureRecognizer应用于单元格上的视图。将按钮添加到自定义单元格中，当您滑动自定义单元格上的视图时，自定义单元格上的按钮将可见。

 UIGestureRecognizer* recognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePan:)];
    recognizer.delegate = self;
    [YourView addGestureRecognizer:recognizer];

在该方法中处理视图上的平移

 if (recognizer.state == UIGestureRecognizerStateBegan) {
    // if the gesture has just started, record the current centre location
    _originalCenter = vwCell.center;
}

// 2
if (recognizer.state == UIGestureRecognizerStateChanged) {
    // translate the center
    CGPoint translation = [recognizer translationInView:self];
    vwCell.center = CGPointMake(_originalCenter.x + translation.x, _originalCenter.y);
    // determine whether the item has been dragged far enough to initiate  / complete
    _OnDragRelease = vwCell.frame.origin.x < -vwCell.frame.size.width / 2;

}

// 3
if (recognizer.state == UIGestureRecognizerStateEnded) {
    // the frame this cell would have had before being dragged
    CGPoint translation = [recognizer translationInView:self];

    if (_originalCenter.x+translation.x<22) {
          vwCell.center = CGPointMake(22, _originalCenter.y);
        IsvwRelease=YES;

    }
    CGRect originalFrame = CGRectMake(0, vwCell.frame.origin.y,
                                      vwCell.bounds.size.width, vwCell.bounds.size.height);
    if (!_deleteOnDragRelease) {
        // if the item is not being dragged far enough , snap back to the original location
        [UIView animateWithDuration:0.2
                         animations:^{
                             vwCell.frame = originalFrame;
                         }
         ];
    }
}

- Nikodem · Answer 3

- (UISwipeActionsConfiguration *)tableView:(UITableView *)tableView trailingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UIContextualAction *delete = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleNormal title:nil handler:^(UIContextualAction * _Nonnull action, __kindof UIView * _Nonnull sourceView, void (^ _Nonnull completionHandler)(BOOL)) {
        
        // your code...
        
    }];
    delete.image  = [UIImage systemImageNamed:@"trash"];
    
    UISwipeActionsConfiguration *actions = [UISwipeActionsConfiguration configurationWithActions:[[NSArray alloc] initWithObjects:delete, nil]];
    
    return actions;
}