iOS8之前我们使用UISearchDisplayController做TableView的本地搜索，查看UIKit库，苹果已经使用新控件取代它。
NS_CLASS_DEPRECATED_IOS(3_0, 8_0, "UISearchDisplayController has been replaced with UISearchController") __TVOS_PROHIBITED
使用UISearchDisplayController的时候，搜索结果的展示tableView系统已经帮我们封装好，但是使用UISearchController，我们需要提供一个搜索结果的展示TableView.
如何使用UISearchController实现搜索功能呢？
1创建一个搜索结果展示TableViewController
.h文件
#import <UIKit/UIKit.h> @interface SearchResultVC : UITableViewController
// 搜索结果数据
@property (nonatomic, strong) NSMutableArray *resultsArray;
@end
.m
#import "SearchResultVC.h"
@interface SearchResultVC ()
@end
@implementation SearchResultVC
- (void)viewDidLoad {
[super viewDidLoad];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.resultsArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"RESULT_CELL"];
if (cell == nil) {
cell = [tableView dequeueReusableCellWithIdentifier:@"RESULT_CELL"];
}
cell.textLabel.text = self.resultsArray[indexPath.row];
cell.accessoryType=UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
2 创建一个UISearchController
- (void)initSearchController{
SearchResultVC *resultTVC = [[SearchResultVC alloc] initWithStyle:UITableViewStylePlain];
UINavigationController *resultVC = [[UINavigationController alloc] initWithRootViewController:resultTVC];
self.searchController = [[UISearchController alloc]initWithSearchResultsController:resultVC];
self.searchController.searchResultsUpdater = self;
//self.searchController.dimsBackgroundDuringPresentation = NO;
//self.searchController.hidesNavigationBarDuringPresentation = NO;
self.searchController.searchBar.frame = CGRectMake(self.searchController.searchBar.frame.origin.x,self.searchController.searchBar.frame.origin.y,self.searchController.searchBar.frame.size.width,44);
self.tableView.tableHeaderView = self.searchController.searchBar;
self.searchController.searchBar.delegate = self;
}
3 实现UISearchController的UISearchResultsUpdating方法，当开始搜索的时候响应。并且实现筛选的逻辑
#pragma mark - UISearchResultsUpdating
- (void)updateSearchResultsForSearchController:(UISearchController *)searchController{
UINavigationController *navController = (UINavigationController *)self.searchController.searchResultsController;
SearchResultVC *resultVC = (SearchResultVC *)navController.topViewController;
[self filterContentForSearchText:self.searchController.searchBar.text];
resultVC.resultsArray = self.tempsArray;
[resultVC.tableView reloadData];
}
#pragma mark - Private Method
- (void)filterContentForSearchText:(NSString *)searchText{
NSLog(@"%@",searchText);
NSUInteger searchOptions = NSCaseInsensitiveSearch | NSDiacriticInsensitiveSearch;
[self.tempsArray removeAllObjects];
for (int i = ; i < self.resultArray.count; i++) {
NSString *title = self.resultArray[i];
NSRange storeRange = NSMakeRange(, title.length);
NSRange foundRange = [title rangeOfString:searchText options:searchOptions range:storeRange];
if (foundRange.length) {
[self.tempsArray addObject:self.resultArray[i]];
}
}
}
完成了，就是这么简单，UI什么的可以自定义。简单demo可以去我github上下载：https://github.com/wangdachui/WTUISearchController