TableView无法使用AFNetworking响应对象中的新数据重新加载

下面我有一个朋友列表tableview的代码，它有自定义的tableview单元格，可以向右滑动以显示3个按钮。 其中一个按钮是removeFriend按钮。

该按钮应该从朋友列表中删除该朋友。 然后应该使用已删除朋友的更新的tableview重新加载表。
在我离开视图然后返回视图之前，已删除的朋友不会从tableview中消失。

服务器正在发送更新的JSON好友列表数据，删除已删除的好友。 我究竟能做错什么？

使用的代码如下：

-(void) deleteAction:(id) sender { UIButton * btn = (UIButton *) sender; // delete friend NSLog(@"%d", btn.tag); self.dic = [friendsList objectAtIndex:btn.tag]; NSString * friendID = [self.dic objectForKey:@"id"]; NSLog(@"rejected ID : %@", friendID); deleteAlert=[[UIAlertView alloc]initWithTitle:@"Friend Removal Confirmation" message:@"\n\nAre you sure you want to remove this friend\n\n\n\n" delegate:self cancelButtonTitle:@"NO" otherButtonTitles:@"YES", nil]; [deleteAlert show]; } -(void) deleteAction2 { NSString * friendID = [self.dic objectForKey:@"id"]; [self removeFriend:friendID]; } -(void) removeFriend:(NSString *) friendId { NSString * userID = [[NSUserDefaults standardUserDefaults] objectForKey:USERID]; NSMutableDictionary* params =[NSMutableDictionary dictionaryWithObjectsAndKeys:@"removeFriend", @"command", friendId,@"Requesterid", userID/*friendId*/, @"userid", nil]; NSLog( @"%@", params); [SVProgressHUD showWithStatus:@"Loading..." maskType:SVProgressHUDMaskTypeBlack]; AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; [manager POST:BaseURLString parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) { NSLog(@"JSON: %@", responseObject); [SVProgressHUD dismiss]; NSString * error = [responseObject objectForKey:@"error"]; if(error) [[[UIAlertView alloc] initWithTitle:@"Error" message:error delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil] show]; else { friendsList = [NSMutableArray arrayWithArray:[(NSDictionary *)responseObject objectForKey:@"result"]]; } // else // [[[UIAlertView alloc] initWithTitle:@"Alert" message:@"You sent request." delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil] show]; } failure:^(AFHTTPRequestOperation *operation, NSError *error) { [SVProgressHUD dismiss]; NSLog(@"Error: %@", error); }]; [friendsTableView reloadData]; } #pragma alertview delegate - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex; { NSString *title = [alertView buttonTitleAtIndex:buttonIndex]; if(alertView == addFriendAlert) { if(buttonIndex == 1) { addFriendId = [addFriendAlert textFieldAtIndex:0].text; if([addFriendId isEqualToString:@""]) return; NSLog(@"%@", addFriendId); [self sendingFriendAddRequest:addFriendId]; } } if(alertView == deleteAlert){ if([title isEqualToString:@"NO"]) { NSLog(@"Nothing to do here"); } else if([title isEqualToString:@"YES"]) { NSLog(@"Delete the cell"); [self deleteAction2]; } } } 

Answer 1

网络请求是异步的

[friendsTableView reloadData];

可以在更新了friendsList的成功块之前执行