iOS開發---簡單地搜尋

標籤：

iOS8之後我們就可以直接運用UISearchController的代理方法進行開發，不用再UIsearch和其他的一下東西了，我就直接給大家上代碼吧

UISearchBarDelegate,UISearchResultsUpdating這兩個代理方法

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);
//當做表的頭視圖    tableview.tableHeaderView = _search.searchBar;

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
//一定要判斷狀態    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];
//篩選語句    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開發---簡單地搜尋