UISearchBar和UISearchDisplayController配合使用，是iOS8之前的使用方法，iOS8以后使用UISearchController，更方便简单。
遵守协议<UISearchBarDelegate, UISearchDisplayDelegate>
@property(nonatomic,strong) UISearchBar *searchBar;
@property(nonatomic,strong) UISearchDisplayController *searchDisplayController;
@property(nonatomic,strong) NSMutableArray *searchResultArray;//搜索结果数组
初始化控件
#pragma mark - getter
- (UISearchBar*)searchBar {
if(!_searchBar) {
_searchBar= [[UISearchBar alloc]init];
_searchBar.delegate=self;
_searchBar.tintColor= [YFRUtility colorFromHexString:@"0x3f75ff"];//设置bar字体前景色
_searchBar.barTintColor= [YFRUtility colorFromHexString:@"0xEDEDF3"];//bar前景色
_searchBar.layer.borderColor= [YFRUtility colorFromHexString:@"0xEDEDF3"].CGColor;
_searchBar.layer.borderWidth=0.5;//为了掩饰黑线，加边框设置前景色同色
[_searchBar sizeToFit];
}
return _searchBar;
}
- (UISearchDisplayController*)searchDisplayController {
if(!_searchDisplayController) {
_searchDisplayController= [[UISearchDisplayController alloc]initWithSearchBar:self.searchBar contentsController:self];
_searchDisplayController.delegate=self;
_searchDisplayController.searchResultsDataSource=self;
_searchDisplayController.searchResultsDelegate=self;
_searchDisplayController.searchResultsTableView.tableFooterView= [UIView new];//无数据时不显示cell
}
return_searchDisplayController;
}
viewDidLoad代码
- (void)viewDidLoad {
[super viewDidLoad];
self.searchResultArray = [NSMutableArray array];
self.tableView.tableHeaderView = self.searchBar;
self.edgesForExtendedLayout=UIRectEdgeNone;//解决页面跳转时searchBar跳动问题
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
//跳转页面时searchDisplayController置为不活跃
if(_searchDisplayController.isActive) {
_searchDisplayController.active=NO;
}
}
实现UISearchBar的代理回调方法
#pragma mark - UISearchBar Delegate
//实时搜索
- (void)searchBar:(UISearchBar*)searchBar textDidChange:(NSString*)searchText {
[self searchDataWithKeyword:searchText];//执行搜索代码
}
//点击搜索按钮
- (void)searchBarSearchButtonClicked:(UISearchBar*)searchBar {
[self searchDataWithKeyword:searchBar.text];//执行搜索代码
}
//取消搜索
- (void)searchBarCancelButtonClicked:(UISearchBar*)searchBar {
[self.searchResultArray removeAllObjects];//取消搜索清空result数组
}
搜索数据的方法
- (void)searchDataWithKeyword:(NSString*)keyword {
[self.searchResultArray removeAllObjects];//清空之前的数据
//网络请求或本地搜索
{
//self.searchResultArray赋值并更新结果列表
[_searchDisplayController.searchResultsTableView reloadData];
}
}
//解决tableView下拉刷新冲突
#pragma mark UIScrollViewDelegate
- (void)scrollViewDidScroll:(UIScrollView*)scrollView {
if(_searchDisplayController.isActive) {
return;
}
...//下拉刷新代码
}
Tableview的回调：区分原始tableview和resultTableview
#pragma mark -- UITableViewDelegate
-(NSInteger)tableView:(UITableView*)tableView numberOfRowsInSection:(NSInteger)section{
if(_searchDisplayController.isActive) {//搜索结果
return [self.resultArray count];
}else{//原始tableview
return [self.dataSource count];
}
}
- (CGFloat)tableView:(UITableView*)tableView heightForRowAtIndexPath:(NSIndexPath*)indexPath
{
if(_searchDisplayController.isActive) {//搜索结果
return 44;
}else{//原始tableview
return 60;
}
}
-(UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath{
staticNSString*identifier =@"";
UITableViewCell*cell = [tableView dequeueReusableCellWithIdentifier:identifier];
if(!cell) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
if(_searchDisplayController.isActive) {//搜索结果
}else{//原始tableview
}
returncell;
}
-(void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
if(_searchDisplayController.isActive) {//搜索结果
}else{//原始tableview
}
}
