JKRCustomSearchController
模仿微信自定义searchController
和UISearchController相同的使用方式，只需要设置searchBar为tableView的tableHeaderView就可以：
[self.tableView setTableHeaderView:self.searchController.searchBar];
控制器懒加载：
- (JKRSearchController *)searchController {
if (!_searchController) {
JKRSearchResultViewController *resultSearchController = [[JKRSearchResultViewController alloc] init];
_searchController = [[JKRSearchController alloc] initWithSearchResultsController:resultSearchController];
_searchController.searchBar.placeholder = @"搜索";
_searchController.hidesNavigationBarDuringPresentation = YES;
_searchController.searchResultsUpdater = self;
_searchController.searchBar.delegate = self;
_searchController.delegate = self;
}
return _searchController;
}
搜索结果展示：
#pragma mark - JKRSearchControllerhResultsUpdating
- (void)updateSearchResultsForSearchController:(JKRSearchController *)searchController {
NSString *searchText = searchController.searchBar.text;
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"(SELF CONTAINS %@)", searchText];
JKRSearchResultViewController *resultController = (JKRSearchResultViewController *)searchController.searchResultsController;
if (!(searchText.length > 0)) resultController.filterDataArray = @[];
else resultController.filterDataArray = [self.dataArray filteredArrayUsingPredicate:predicate];
}