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

Swift 3实际回答

这是你唯一需要的功能。对于自定义操作,您不需要CanEdit或CommitEditingStyle函数。

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]
}

其他回答

在iOS 11中,这在UITableViewDelegate中是公开的。下面是一些示例代码:

斯威夫特

func tableView(_ tableView: UITableView, leadingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {

    let action = UIContextualAction(style: .normal, title: nil) { (_, _, _) in
        print("Swipe action tapped")
    }

    action.image = UIImage(systemName: "plus.slash.minus")
    action.backgroundColor = .green

    return UISwipeActionsConfiguration(actions: [action])
}

Objective - C

- (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;
}

也可用:

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

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

Swift 3实际回答

这是你唯一需要的功能。对于自定义操作,您不需要CanEdit或CommitEditingStyle函数。

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]
}

约翰尼的答案是正确的。我只是在objective-c中添加了下面的代码,以便初学者(以及那些拒绝学习Swift语法的人:)

确保你声明了uitableviewdelegate并拥有以下方法:

 -(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...
    }

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

Swift 4和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])
}