每次删除后，有错误的滑动以删除显示在另一行

Question

自 iOS 11 以来，我在 UITableView 删除操作上遇到了一个奇怪的问题。

这是相关的 TableView 代码：

@implementation ChatMessageListViewController(TableView)

#pragma mark - table view datasource/delegate
- (NSArray<UITableViewRowAction *> *) tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(nonnull NSIndexPath *)indexPath{
    NSMutableArray *rowActions = [NSMutableArray array];

    UITableViewRowAction *delete = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDestructive title:@"Delete" handler:^(UITableViewRowAction * _Nonnull action, NSIndexPath * _Nonnull indexPath) {
        [self deleteMessageAtIndexPath:indexPath];
    }];
    delete.backgroundColor = [UIColor redColor];
    [rowActions addObject:delete];
    return [rowActions copy];
}

- (void) deleteMessageAtIndexPath:(NSIndexPath *)indexPath {
    NSString *threadID = [[self.messageArray objectAtIndex:indexPath.row] objectForKey:@"threadID"];
    [self.tableView beginUpdates];
    [self.messageArray removeObjectAtIndex:indexPath.row];
    [self.tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
    [self.tableView endUpdates];

    @weakify(self);
    [UIUtil showLoadingHudWithText:WELocalString(@"message_remove_thread_loading_text", @"Deleting...", @"删除中...")];
    [[AsyncUtil sharedInstance] dispatch_background_network:^{
        DBManager *db = [[DBManager alloc] init];
        [db deletetableData:[NSString stringWithFormat:@"singleChat WHERE threadID = '%@' ",threadID] ];
        [[MemChatThreadMessages sharedInstance] removeThread:threadID];
        NSDictionary * result = [Network deleteChatThread:threadID forEmail:[WEUtil getEmail]];
        [[AsyncUtil sharedInstance] dispatch_main:^{
            [UIUtil hideLoadingHuds];
            @strongify(self);
            if(self == nil) return ;

            if([result[@"result"] isEqualToString:@"success"]){
            }else{
                [UIUtil showErrorMessage:WELocalString(@"message_remove_thread_error", @"Cannot delete this thread", @"不能删除该会话！")];
            }
            [self.tableView reloadData];
        }];
    }];
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return [self.messageArray count];
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    NSDictionary *messageInfo = [self.messageArray objectAtIndex:indexPath.row];
    if ([(NSString *)[messageInfo objectForKey:@"isAnnouncement"] isEqualToString:@"1"]) {
        return 80;
    }else if ([[messageInfo objectForKey:@"chatTag"] isValidString]){
        return 80;
    }else if([self isSpecialMessage:messageInfo]){
        return 80;
    }else{
        return 67;
    }
}

- (UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    static NSString *CellIdentifier = @"message";
    if(self.events == nil){
        NSDictionary * d = [WEUtil getMyEventListCache];
        self.events = [[NSMutableDictionary alloc] init];
        for(NSDictionary * eventSummary in d[@"events"]){
            NSString * eventID = eventSummary[@"eventid"];
            [self.events setObject:eventSummary forKey:eventID];
        }
    }
    UserMessageTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil){
        cell = [[UserMessageTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
                                               reuseIdentifier:CellIdentifier];
    }
    if(indexPath.row >= [self.messageArray count]){
        TERMINATE_WITH_NIL_CELL;
    }

    NSDictionary *messageInfo = [self.messageArray objectAtIndex:indexPath.row];

    if(![self isSpecialMessage:messageInfo]){
        [cell configureCellWithMessageDict:messageInfo];
    }else{
        [cell configureCellWithNewMessageDict:messageInfo withEvents:self.events];
    }

    return cell;
}

#pragma mark - Navigation

-(void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    [tableView deselectRowAtIndexPath:indexPath animated:YES];
    NSDictionary *msgThreadDict = [self.messageArray objectAtIndex:indexPath.row];
    if(![self isSpecialMessage:msgThreadDict]){
        [self tableView:tableView didSelectNormalRowAtIndexPath:indexPath];
    }else{
        NSString * event = msgThreadDict[@"event"];
        if([event isValidString]){
            if([event isEqualToString:@"no_event_messages"]){
                [UIUtil showErrorMessage:@"no event id"];
            }else{
                [BackendTracking trackingWithAction:@"open_special" withLabel:@"threads_list"];
                SpecialTopicListViewController * special = [[SpecialTopicListViewController alloc] init];
                special.tracking_src = @"tab";
                [self.navigationController pushViewController:special animated:YES];
            }
        }
    }
}

-(void) tableView:(UITableView *)tableView didSelectNormalRowAtIndexPath:(NSIndexPath *)indexPath{
    NSDictionary *msgThreadDict = [self.messageArray objectAtIndex:indexPath.row];
    NSString *threadID = [msgThreadDict objectForKey:@"threadID"];
    NSString *jid = [msgThreadDict objectForKey:@"jid"];
    [GATracking trackCategory:@"message" withAction:@"thread_list_item_click" withLabel:threadID];
    [[MemChatThreadMessages sharedInstance] setCurrentThreadID:threadID];
    PrivateMessageViewController * chatVC = [[PrivateMessageViewController alloc] init];
    chatVC.threadID = threadID;
    chatVC.targetJID = jid;
    chatVC.targetName = [msgThreadDict objectForKey:@"name"];
    chatVC.unreadMsgNumber = [[self.messageArray objectAtIndex:indexPath.row][@"unreadCnt"] integerValue];

    if ([(NSString *)[msgThreadDict objectForKey:@"isGroup"] isEqualToString:@"1"]) {
        chatVC.isGroup = YES;
    }else{
        chatVC.isGroup = NO;
    }
    chatVC.src = @"list";
    WELogInfo(@"click message");
    [self.navigationController pushViewController:chatVC animated:YES];
}
@end

随着更新和使用这些尾随滑动操作的更改，每次我删除条目之前都会附加另一个视图（直到它不再起作用）。我试过禁用完整路径或实施 iOS 11 trailingSwipeActionsConfigurationForRowAtIndexPath 但到目前为止我无法解决此问题。

你看到代码有什么问题了吗？主控制器代码在另一个文件中。

Answer 1

删除后尝试重新加载，在这一行之后 [self.tableView 结束更新]; 我认为您从 messageArray 中删除了数据，但是因为您没有在那之后重新加载所以 table 视图计数仍然是 2 并且您正在块内重新加载这可能需要时间。

还有一件事你已经从 messageArray 中删除数据，然后从数据库中删除，所以如果你无法从数据库中删除它，你将显示它没有被删除，但对于用户来说它将被删除，因为它不再在消息数组

每次删除后，有错误的滑动以删除显示在另一行

Buggy swipe to delete display on one more row after each delete

xcode

uitableview

ios

ios11

每次删除后，有错误的滑动​​以删除显示在另一行

Buggy swipe to delete display on one more row after each delete

xcode

uitableview

ios

ios11

每次删除后，有错误的滑动以删除显示在另一行