searchcontroller使用

#import"TableViewController.h"

@interfaceTableViewController()

@property(nonatomic,strong)UISearchController*searchController;

@property(nonatomic,strong)NSMutableArray*listArr;

@property(nonatomic,strong)NSMutableArray*dataArr;

@end

@implementationTableViewController

- (void)viewDidLoad {

[superviewDidLoad];

self.listArr=[NSMutableArrayarray];

self.dataArr=[NSMutableArrayarray];

for(inti=0; i<100; i++) {

NSString*s=[NSStringstringWithFormat:@"%d",i];

[self.dataArraddObject:s];

}

self.searchController=[[UISearchControlleralloc]initWithSearchResultsController:nil];

_searchController.searchResultsUpdater=self;

_searchController.dimsBackgroundDuringPresentation=NO;

_searchController.hidesNavigationBarDuringPresentation=YES;

_searchController.searchBar.frame=CGRectMake(self.searchController.searchBar.frame.origin.x,self.searchController.searchBar.frame.origin.y,self.searchController.searchBar.frame.size.width,44.0);

self.tableView.tableHeaderView=self.searchController.searchBar;

[self.tableViewregisterClass:[UITableViewCellclass]forCellReuseIdentifier:@"cell"];

}

- (void)didReceiveMemoryWarning {

[superdidReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView*)tableView {

// Return the number of sections.

return1;

}

- (NSInteger)tableView:(UITableView*)tableView numberOfRowsInSection:(NSInteger)section {

if(self.searchController.active) {

return[self.listArrcount];

}else{

return[self.dataArrcount];

}

}

- (UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath {

UITableViewCell*cell = [tableViewdequeueReusableCellWithIdentifier:@"cell"forIndexPath:indexPath];

if(self.searchController.active) {

cell.textLabel.text=self.listArr[indexPath.row];

}else{

cell.textLabel.text=self.dataArr[indexPath.row];

}

returncell;

}

-(void)updateSearchResultsForSearchController:(UISearchController*)searchController {

NSString*searchString = [self.searchController.searchBartext];

NSPredicate*preicate = [NSPredicatepredicateWithFormat:@"SELF CONTAINS

%@", searchString];

if(self.listArr!=nil) {

[self.listArrremoveAllObjects];

}

//过滤数据

self.listArr= [NSMutableArrayarrayWithArray:[self.dataArrfilteredArrayUsingPredicate:preicate]];

//刷新表格

[self.tableViewreloadData];

}

-(void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath{

NSLog(@"%ld",indexPath.row);

}

@end