ios开发之--UISearchDisplayController的简单使用

控件就不介绍了，UISearchDisplayController就是把searbar和tableview结合到一块了，直接上代码：

.h

#import <UIKit/UIKit.h>

@interface ThirdViewController : UIViewController<UITableViewDelegate,UITableViewDataSource>
{
    NSArray *_array;
    NSArray *_filterData;
    UISearchDisplayController *searchDisplayController;
}

@property(nonatomic,strong)UITableView *tableView;

@end

.m

@implementation ThirdViewController

-(void)viewDidLoad
{
    [super viewDidLoad];
    
    self.title = @"搜索框";
    self.view.backgroundColor = [UIColor redColor];
    
    UISearchBar *searchBar = [[UISearchBar alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 44)];
    searchBar.placeholder = @"搜索";
searchBar.delegate = self;
    
    UITableView *tableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) style:UITableViewStylePlain];
    tableView.delegate = self;
    tableView.dataSource = self;
    tableView.tableFooterView = [[UIView alloc]init];
    self.tableView = tableView;
    [self.view addSubview:self.tableView];
    
    _array = @[@"11",@"A",@"22aa",@"Aa",@"AAa",@"aaA"];
    
    self.tableView.tableHeaderView = searchBar;
    
    //设置搜索栏提示信息
    searchDisplayController.searchBar.prompt = @"搜索提示语";
    //不显示searchbar的边框
    searchDisplayController.searchBar.searchBarStyle = UISearchBarStyleMinimal;
    //显示分段条
    searchDisplayController.searchBar.showsScopeBar = YES;
    //分段条的集体内容
    searchDisplayController.searchBar.scopeButtonTitles = @[@"全部",@"高级",@"初级"];
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    if (self.tableView==tableView) {
       return _array.count;
    }else
    {
        NSPredicate *predicate = [NSPredicate predicateWithFormat:@"self contains [cd] %@",searchDisplayController.searchBar.text];
        _filterData = [[NSArray alloc]initWithArray:[_array filteredArrayUsingPredicate:predicate]];
        return _filterData.count;
    }
    
    
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *cellIdenfiter = @"CELLS";
    UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
    if (!cell) {
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdenfiter];
        cell.textLabel.text = _array[indexPath.row];
    }
    
    if (self.tableView==tableView) {
        cell.textLabel.text = _array[indexPath.row];
    }else
    {
        cell.textLabel.text = _filterData[indexPath.row];
    }
    
    return cell;
}

相关的代理方法：

/搜索代理方法，每次改变搜索内容时都会调用
-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
    NSLog(@"-------%@",searchText);
}

//选择分段时调用
-(void)searchBar:(UISearchBar *)searchBar selectedScopeButtonIndexDidChange:(NSInteger)selectedScope
{
    NSLog(@"-------%ld",selectedScope);
}

效果如下图:

仅做记录！还有其他的几种样式，大家也可以自己尝试下！不过这中原生的效果用的少，自定义的多！

作者：稻草人11223