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iOS开发---简单地搜索

iOS8之后我们就可以直接运用UISearchController的代理方法进行开发,不用再UIsearch和其他的一下东西了,我就直接给大家上代码吧

UISearchBarDelegate,UISearchResultsUpdating这两个代理方法

viewdidload:

self.dataList=[NSMutableArray arrayWithCapacity:100];        for (NSInteger i=0; i<100; i++) {        [self.dataList addObject:[NSString stringWithFormat:@"%ld-FlyElephant",(long)i]];    }    ALog(@"-====%lu",(unsigned long)self.dataList.count);  tableview =[[UITableView alloc]initWithFrame:self.view.bounds style:UITableViewStylePlain];    tableview.delegate =self;    tableview.dataSource =self;    [self.view addSubview:tableview];  _search =[[UISearchController alloc]initWithSearchResultsController:nil];    _search.searchResultsUpdater =self;    _search.dimsBackgroundDuringPresentation = NO;    _search.hidesNavigationBarDuringPresentation = NO;    _search.searchBar.frame = CGRectMake(_search.searchBar.frame.origin.x, _search.searchBar.frame.origin.y, _search.searchBar.frame.size.width, 44);
//当做表的头视图 tableview.tableHeaderView
= _search.searchBar;

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
//一定要判断状态
if (_search.active) { return [self.searchList count]; } else{ return [self.dataList count]; }}-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ static NSString *flag=@"cellFlag"; UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:flag]; if (cell==nil) { cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:flag]; } if (_search.active) { [cell.textLabel setText:self.searchList[indexPath.row]]; } else{ [cell.textLabel setText:self.dataList[indexPath.row]]; } return cell; }-(void)updateSearchResultsForSearchController:(UISearchController *)searchController{ NSString *searchString =[_search.searchBar text];
//筛选语句 NSPredicate
*predicate =[ NSPredicate predicateWithFormat:@"SELF CONTAINS[c]%@",searchString]; if (self.searchList !=nil) { [self .searchList removeAllObjects]; } self.searchList = [NSMutableArray arrayWithArray:[self.dataList filteredArrayUsingPredicate:predicate]]; ALog(@"-==%ld",self.searchList.count); [tableview reloadData]; }

 

iOS开发---简单地搜索