Ios UISearchDisplayController-结果存在但不显示

我对

UISearchDisplayController

有奇怪的问题

我的代码如下：

行数部分：

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
  if ([[self searchDisplayController] isActive])
  {
    return [self.itemsFound count];

  } else {
    return [self.items count];
  }

  return [self.items count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  FavouriteTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

  if (!cell)
  {
    cell = [[FavouriteTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
  }

  Facilities *f = nil;

  if ([[self searchDisplayController] isActive])
  {
    f = [self.itemsFound objectAtIndex:indexPath.row];

  } else {
    f = [self.items objectAtIndex:indexPath.row];
  }

  [cell.favouriteButton addTarget:self action:@selector(toggleFavourite:) forControlEvents:UIControlEventTouchUpInside];
  [cell.titleLabel setText:f.name];

  return cell;
}

- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
  NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:@"name contains[c] %@",searchText];

  self.itemsFound              = [self.items filteredArrayUsingPredicate:resultPredicate];
}

- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {

  self.itemsFound = nil;

  [self filterContentForSearchText:searchString
                           scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
                                  objectAtIndex:  [self.searchDisplayController.searchBar
                                                 selectedScopeButtonIndex]]];
  return YES;
}

cellForRowAtIndexPath:

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
  if ([[self searchDisplayController] isActive])
  {
    return [self.itemsFound count];

  } else {
    return [self.items count];
  }

  return [self.items count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  FavouriteTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

  if (!cell)
  {
    cell = [[FavouriteTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
  }

  Facilities *f = nil;

  if ([[self searchDisplayController] isActive])
  {
    f = [self.itemsFound objectAtIndex:indexPath.row];

  } else {
    f = [self.items objectAtIndex:indexPath.row];
  }

  [cell.favouriteButton addTarget:self action:@selector(toggleFavourite:) forControlEvents:UIControlEventTouchUpInside];
  [cell.titleLabel setText:f.name];

  return cell;
}

- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
  NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:@"name contains[c] %@",searchText];

  self.itemsFound              = [self.items filteredArrayUsingPredicate:resultPredicate];
}

- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {

  self.itemsFound = nil;

  [self filterContentForSearchText:searchString
                           scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
                                  objectAtIndex:  [self.searchDisplayController.searchBar
                                                 selectedScopeButtonIndex]]];
  return YES;
}

下一步：

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
  if ([[self searchDisplayController] isActive])
  {
    return [self.itemsFound count];

  } else {
    return [self.items count];
  }

  return [self.items count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  FavouriteTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

  if (!cell)
  {
    cell = [[FavouriteTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
  }

  Facilities *f = nil;

  if ([[self searchDisplayController] isActive])
  {
    f = [self.itemsFound objectAtIndex:indexPath.row];

  } else {
    f = [self.items objectAtIndex:indexPath.row];
  }

  [cell.favouriteButton addTarget:self action:@selector(toggleFavourite:) forControlEvents:UIControlEventTouchUpInside];
  [cell.titleLabel setText:f.name];

  return cell;
}

- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
  NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:@"name contains[c] %@",searchText];

  self.itemsFound              = [self.items filteredArrayUsingPredicate:resultPredicate];
}

- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {

  self.itemsFound = nil;

  [self filterContentForSearchText:searchString
                           scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
                                  objectAtIndex:  [self.searchDisplayController.searchBar
                                                 selectedScopeButtonIndex]]];
  return YES;
}

应重新加载搜索字符串的表：

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
  if ([[self searchDisplayController] isActive])
  {
    return [self.itemsFound count];

  } else {
    return [self.items count];
  }

  return [self.items count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  FavouriteTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

  if (!cell)
  {
    cell = [[FavouriteTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
  }

  Facilities *f = nil;

  if ([[self searchDisplayController] isActive])
  {
    f = [self.itemsFound objectAtIndex:indexPath.row];

  } else {
    f = [self.items objectAtIndex:indexPath.row];
  }

  [cell.favouriteButton addTarget:self action:@selector(toggleFavourite:) forControlEvents:UIControlEventTouchUpInside];
  [cell.titleLabel setText:f.name];

  return cell;
}

- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
  NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:@"name contains[c] %@",searchText];

  self.itemsFound              = [self.items filteredArrayUsingPredicate:resultPredicate];
}

- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {

  self.itemsFound = nil;

  [self filterContentForSearchText:searchString
                           scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
                                  objectAtIndex:  [self.searchDisplayController.searchBar
                                                 selectedScopeButtonIndex]]];
  return YES;
}

我的桌子：

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
  if ([[self searchDisplayController] isActive])
  {
    return [self.itemsFound count];

  } else {
    return [self.items count];
  }

  return [self.items count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  FavouriteTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

  if (!cell)
  {
    cell = [[FavouriteTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
  }

  Facilities *f = nil;

  if ([[self searchDisplayController] isActive])
  {
    f = [self.itemsFound objectAtIndex:indexPath.row];

  } else {
    f = [self.items objectAtIndex:indexPath.row];
  }

  [cell.favouriteButton addTarget:self action:@selector(toggleFavourite:) forControlEvents:UIControlEventTouchUpInside];
  [cell.titleLabel setText:f.name];

  return cell;
}

- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
  NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:@"name contains[c] %@",searchText];

  self.itemsFound              = [self.items filteredArrayUsingPredicate:resultPredicate];
}

- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {

  self.itemsFound = nil;

  [self filterContentForSearchText:searchString
                           scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
                                  objectAtIndex:  [self.searchDisplayController.searchBar
                                                 selectedScopeButtonIndex]]];
  return YES;
}

如果我键入列表中的字母：

结果存在，但未显示在列表中

在下一张图片中，没有结果，屏幕显示正确的信息

我不知道为什么我不能在第二个屏幕上显示结果，而结果（显示在控制台上）

你知道吗

谢谢你抽出时间