ios - tableView 中的搜索和复选标记

Question

我正在尝试在 iOS 中创建一个搜索栏，并将其设置到过滤结果的位置，然后当您单击它时，它会显示一个复选标记。当我删除搜索文本时，复选标记消失，整页单元格出现，但我在搜索中选择的单元格未选中带有复选标记。有人可以修复下面的代码来帮助我吗？

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSMutableSet *selectedUsers = [NSMutableSet set];
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier   forIndexPath:indexPath];


PFUser *user;
if (self.userResults != nil)
{
    user = [self.userResults objectAtIndex:indexPath.row];
}
else
{
    user = [self.allUsers objectAtIndex:indexPath.row];
}
cell.textLabel.text = user.username;


if ([selectedUsers containsObject:user])
{
    cell.accessoryType = UITableViewCellAccessoryNone;
}
else
{
    cell.accessoryType = UITableViewCellAccessoryNone;
}
if ([selectedUsers containsObject:user])
{
    // user already selected

}
else
{
    // select user
    [selectedUsers addObject:user];
}


return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath   {
[self.tableView deselectRowAtIndexPath:indexPath animated:NO];
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];

cell.accessoryType = UITableViewCellAccessoryCheckmark;
PFRelation *friendsRelation = [self.currentUser relationforKey:@"friendsRelation"];
PFUser *user = [self.allUsers objectAtIndex:indexPath.row];
[friendsRelation addObject:user];
[self.currentUser saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
    if (error) {
        NSLog(@"Error %@ %@", error, [error userInfo]);

    }    }];






}

Answer 1

  - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:    (NSIndexPath *)indexPath
{
    NSMutableSet *selectedUsers = [NSMutableSet set];
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier      forIndexPath:indexPath];  
PFUser *user;
if (self.userResults != nil)
{
     user = [self.userResults objectAtIndex:indexPath.row];
}
else
{
     user = [self.allUsers objectAtIndex:indexPath.row];
}
cell.textLabel.text = user.username; 
if ([selectedUsers containsObject:user])
{
     cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
else
{
     cell.accessoryType = UITableViewCellAccessoryNone;
} 
     return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath   {
[self.tableView deselectRowAtIndexPath:indexPath animated:NO];
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];


PFRelation *friendsRelation = [self.currentUser relationforKey:@"friendsRelation"];
PFUser *user = [self.allUsers objectAtIndex:indexPath.row];
[friendsRelation addObject:user];
[self.currentUser saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
if (error) {
    NSLog(@"Error %@ %@", error, [error userInfo]);

}    }];

PFUser *user1;
if (self.userResults != nil)
{
     user1 = [self.userResults objectAtIndex:indexPath.row];
}
else
{
     user1 = [self.allUsers objectAtIndex:indexPath.row];
}
if (cell.accessoryType == UITableViewCellAccessoryCheckmark)
{
    cell.accessoryType = UITableViewCellAccessoryNone;
    [selectedUsers removeObject:user1];
}
else
{
    cell.accessoryType = UITableViewCellAccessoryCheckmark;
    [selectedUsers addObject:user1];
}

}

看看这是否有帮助。