搜索建议返回界面消失

[xiuqiao]

问题描述

自定义搜索建议的 cell，选中进入后返回导致搜索建议消失

原因

1，在选中建议时会设置 searchBar.text 为 textLabel.text 自定义cell 不一定设置cell默认textLabel
#pragma mark - UITableViewDelegate

• (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
  {
  UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
  [tableView deselectRowAtIndexPath:indexPath animated:YES];
  self.searchBar.text = cell.textLabel.text;

  if ([self.delegate respondsToSelector:@selector(searchViewController:didSelectSearchHistoryAtIndex:searchText:)]) {
  [self.delegate searchViewController:self didSelectSearchHistoryAtIndex:indexPath.row searchText:cell.textLabel.text];
  [self saveSearchCacheAndRefreshView];
  } else {
  [self searchBarSearchButtonClicked:self.searchBar];
  }
  }

2，在返回刷新数据的时候会根据 !self.searchBar.text.lengt 来决定是否隐藏 searchSuggestionView，这个时候 searchBar.text 被设置为空了，，，，

• (NSInteger)searchSuggestionView:(UITableView *)searchSuggestionView numberOfRowsInSection:(NSInteger)section
  {
  if ([self.dataSource respondsToSelector:@selector(searchSuggestionView:numberOfRowsInSection:)]) {
  NSInteger numberOfRow = [self.dataSource searchSuggestionView:searchSuggestionView numberOfRowsInSection:section];
  searchSuggestionView.hidden = self.searchSuggestionHidden || !self.searchBar.text.length || 0 == numberOfRow;
  self.baseSearchTableView.hidden = !searchSuggestionView.hidden;
  return numberOfRow;
  }
  return self.searchSuggestions.count;
  }