Question

我和我的TableView Cell Custom有问题。

我声明我正在使用Parse.com来保存数据。

简而言之，我有一个包含按钮的自定义单元格的表格视图......

此按钮的操作分为两个代表

（void）addFriendUserButtonPressed：（UITableViewCell *）customCell;
（void）removeFriendFromList：（UITableViewCell *）customCell;

第一种方法将一些数据保存到数据库，第二种方法删除它们

用户点击第一个单元格的按钮并更改按钮上的图像... 滚动tableView我注意到图像在未使用的其他按钮上发生了变化...将它们自动更改为所有...对不起，如果我不能很好地表达自己，但他们是6个小时试图找到解决方案。 ..

我确信标签会解决，但我不知道使用哪种方法......我会发布我正在使用的代码

这是自定义单元格类

中按钮的方法

-(IBAction)buttonClicked:(id)sender {
    if (sender == self.addUserButton) {


        if (!self.userSelected) {

            self.userSelected = YES;
            self.addUserButton.tintColor = [UIColor greenColor];
            [self.delegate addFriendUserButtonPressed:self];

        }

        else {

            self.userSelected = NO;
            self.addUserButton.tintColor = [UIColor redColor];

            [self.delegate removeFriendFromList:self];

        }





    }
else if (sender == self.seeProfileButton) {
        NSLog(@"Set  ");
        [self.delegate profileUserButtonPressed:self.itemText];

    } else if (sender == self.contactUserButton) {
        NSLog(@"CONTATTO  ");
        [self.delegate contactButtonPressed:self.itemText];

    }

    else {
        NSLog(@"Bottone Sconosciuto");
    }
}

这是viewcontroller中包含tableView的两个方法。

-(void)addFriendUserButtonPressed:(UITableViewCell *)customCell  {


    NSIndexPath *indexPath = [self.tableViewFindUser indexPathForCell:customCell];

    PFObject *richiesta = [PFObject objectWithClassName:NPFriendClass];

    if (!isFiltered) {

        PFUser *userFiltered = [self.userArray objectAtIndex:indexPath.row];

        [richiesta setObject:userFiltered forKey:NPFriend_AUser];
        [richiesta setObject:userFiltered.objectId forKey:@"OBJECT_USER_ID"];
        [richiesta setObject:userFiltered.username forKey:@"Username"];
        [richiesta setObject:[PFUser currentUser] forKey:NPFriend_DaUser];
        [richiesta setObject:@"Richiesta In Attesa" forKey:NPFriendRequestStatus];
        [richiesta saveInBackground];

        NSLog(@"AMICO: %@", richiesta);
    }


    else {

        PFUser *userNotFiltered = [self.userFiltrati objectAtIndex:indexPath.row];

        [richiesta setObject:userNotFiltered forKey:NPFriend_AUser];
        [richiesta setObject:[PFUser currentUser] forKey:NPFriend_DaUser];
        [richiesta setObject:@"Richiesta In Attesa" forKey:NPFriendRequestStatus];
        [richiesta saveInBackground];

    }

}

-(void)removeFriendFromList:(UITableViewCell *)customCell {
    NSIndexPath *indexPath = [self.tableViewFindUser indexPathForCell:customCell];

    PFUser *userFiltered = [self.userArray objectAtIndex:indexPath.row];

    PFQuery *query = [PFQuery queryWithClassName:NPFriendClass];
    [query whereKey:NPFriend_DaUser equalTo:[PFUser currentUser]];
    [query whereKey:NPFriendRequestStatus equalTo:@"Richiesta In Attesa"];
    [query whereKey:@"OBJECT_USER_ID" equalTo:userFiltered.objectId];
    [query includeKey:NPFriend_AUser];
    [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {

        if(!error) {
            for (PFObject *object in objects) {
                NSLog(@"ELIMINATO: %@", object);
                [object deleteInBackground];
            }
        }

        else {
            NSLog(@"Error: %@", [error localizedDescription]);
        }
    }];


}

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


    static NSString *CellIdentifier = @"cell";

    NPCustomFindUserCell *cell =[tableViewFindUser dequeueReusableCellWithIdentifier:CellIdentifier];
    cell.delegate = self;


    if ([self.cellsCurrentlyEditing containsObject:indexPath]) {
        [cell openCell];
    }

    if (!isFiltered) {


        PFObject *object = [userArray  objectAtIndex:indexPath.row];

        cell.user_photoProfile.image = [UIImage imageNamed:@"camera"];
        cell.user_photoProfile.layer.masksToBounds = YES;
        cell.user_photoProfile.layer.cornerRadius = 3.0f;
        cell.user_photoProfile.contentMode = UIViewContentModeScaleAspectFill;
        cell.user_photoProfile.file = [object objectForKey:NPUserKey_PHOTOPROFILE];
        [cell.user_photoProfile loadInBackground];


        NSString *nameText = [object objectForKey:NPUserKey_NOMECOGNOME];
        cell.label_UserNomeCognome.text = nameText;
        cell.itemText = nameText;

    }

    else {

        PFObject *OggettiFiltrati = [userFiltrati objectAtIndex:indexPath.row];

             cell.user_photoProfile.file = [OggettiFiltrati objectForKey:NPUserKey_PHOTOPROFILE];
               cell.user_photoProfile.image = [UIImage imageNamed:@"camera"];
               [cell.user_photoProfile.layer setMasksToBounds:YES];
               [cell.user_photoProfile  .layer setCornerRadius:5.0f];
               cell.user_photoProfile.contentMode = UIViewContentModeScaleAspectFill;
               [cell.user_photoProfile loadInBackground];

        NSString *str = [OggettiFiltrati objectForKey:NPUserKey_NOMECOGNOME];
        cell.label_UserNomeCognome.text = str;
        cell.itemText = str;

    }

       return cell;
     }

Answer 1

正如rdelmar所说，你只能在cellForRowAtIndexPath内更改UI。

你应该做的是给每个单元格一个变量（它可以是一个布尔值）。我们称之为颜色。单击该按钮时，找出所单击按钮的indexPath（请参阅here）并修改该indexPath的颜色变量（而不是按钮的tintColor）中的单元格。

然后在cellForRowAtIndexPath中，获取当前indexPath的单元格。看看那个单元格的颜色变量。根据其值，相应地更改tintColor。

选择UIButton无法在我的uitableView中使用自定义单元格

1 个答案: