Question

我正在尝试使用我的表格视图实现搜索栏。我的表格视图和搜索栏都使用故事板放置。在我的ViewDidLoad中，我有：

self.searchDisplayController.delegate = self;
self.searchDisplayController.searchResultsDataSource = self;
self.searchDisplayController.searchResultsDelegate = self;

并实施了两种搜索方法：

- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
    NSPredicate *bPredicate = [NSPredicate predicateWithFormat:@"nickname contains[cd] %@",searchText];
    NSArray* array = [[NSArray alloc]init];
    array = [self.fbfriendList filteredArrayUsingPredicate:bPredicate];
    self.searchResult = [NSMutableArray arrayWithArray:array];
}
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
    [self filterContentForSearchText:searchString scope:[[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:[self.searchDisplayController.searchBar selectedScopeButtonIndex]]];
    return YES;
}

在我的表格视图中：

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *simpleTableIdentifier = @"addFriend";

    cell = [self.tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];

if (cell == nil) {
    NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"FFAddFriendTableViewCell" owner:self options:nil];
    cell = [nib objectAtIndex:0];
}
if (tableView == self.searchDisplayController.searchResultsTableView)
{
    NSLog(@"!!! %@",self.searchResult);
    if (cell == nil) {
         [self.searchDisplayController.searchResultsTableView registerNib:[UINib nibWithNibName:@"FFAddFriendTableViewCell" bundle:nil] forCellReuseIdentifier:@"addFriend"];
    }
    else{
    NSLog(@"!!! %@",self.searchResult);
 // LINE XXXXXXX
        cell.nameLabel.text = [[self.searchResult objectAtIndex:indexPath.row] objectForKey:@"nickname"]; 
    }
}
else
{
}
cell.nameLabel.text = [[self.fbfriendList objectAtIndex:indexPath.row] objectForKey:@"nickname"];
return cell;
}

一切都在搜索方面有效。我的NSLogs打印出我的数组中的正确数据。但是，当我想根据NSMutableArray中的数据设置单元格的标签时，它会因错误而崩溃：

-[__NSCFString setText:]: unrecognized selector sent to instance 0x7ff38b5b70e0

我是否遗漏了将搜索栏实施到tableView的任何关键基础？

Answer 1

在“// LINE XXXXXX”下方的行中，您有

cell.nameLabel = ...

那应该是，

cell.nameLabel.text = ...

Answer 2

现在将您的表格视图cellrowindex方法更改为此..

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *simpleTableIdentifier = @"addFriend";

    cell = [self.tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];

    if (cell == nil) {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"FFAddFriendTableViewCell" owner:self options:nil];
        cell = [nib objectAtIndex:0];
    }

    if (tableView == self.searchDisplayController.searchResultsTableView)
    {
        cell.nameLabel.text = [[self.searchResult objectAtIndex:indexPath.row] objectForKey:@"nickname"];
    } else
    {
       cell.nameLabel.text = [[self.fbfriendList objectAtIndex:indexPath.row] objectForKey:@"nickname"];
    }

    return cell;
}

搜索栏工作正常但在我想设置表格单元格标签时崩溃

2 个答案: