模糊搜索UISearchBar

#import "Search_ViewController.h"

@interface Search_ViewController ()<UITableViewDataSource,UITableViewDelegate,UISearchDisplayDelegate,UISearchBarDelegate>

@property(nonatomic,strong)NSArray*dataArr;//数据源

@property(nonatomic,strong)NSArray*resultsArr;//搜索结果

@property(nonatomic,strong)UISearchBar*search;

@property(nonatomic,strong)UISearchDisplayController* searchPlay;

@property(nonatomic,strong)UITableView*aTableView;

@end

@implementation Search_ViewController

- (void)viewDidLoad

{

[super viewDidLoad];

self.title=@"搜索";

_dataArr= [[NSArray alloc]initWithObjects:@"aaa",@"abc",@"aqq",@"bdc",@"gcd",@"mnb",@"zzz",nil];

[self createView];

// Do any additional setup after loading the view.

}

- (void) createView

{

_aTableView= [[UITableView alloc]initWithFrame:CGRectMake(0,0,320,480)];

_aTableView.delegate=self;

_aTableView.dataSource=self;

[self.view addSubview:_aTableView];

}

#pragma mark -

#pragma mark UITableViewDelegate

-(UIView*)tableView:(UITableView*)tableView viewForHeaderInSection:(NSInteger)section

{

_search= [[UISearchBar alloc]initWithFrame:CGRectMake(0,0,320,40)];

_search.backgroundColor= [UIColor redColor];

_search.delegate=self;

_search.showsCancelButton=YES;

_search.keyboardType=UIKeyboardTypeDefault;

_searchPlay= [[UISearchDisplayController alloc]initWithSearchBar:self.search contentsController:self];

_searchPlay.delegate=self;

_searchPlay.searchResultsDataSource=self;

_searchPlay.searchResultsDelegate=self;

_searchPlay.active=NO;

return _searchPlay.searchBar;

}

- (BOOL)searchBarShouldEndEditing:(UISearchBar*)searchBar

{

NSLog(@"取消");

return YES;

}

- (CGFloat)tableView:(UITableView*)tableView heightForHeaderInSection:(NSInteger)section

{

return  tableView ==self.searchPlay.searchResultsTableView?0:40;

}

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

NSInteger row =0;

if([tableView isEqual:self.searchPlay.searchResultsTableView]) {

row = [self.resultsArr count];

}else{

row = [self.dataArr count];

}

return row;

}

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

{

static NSString *CellIdentifier =@"Cell";

UITableViewCell*cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

if(!cell) {

cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];

}

if([tableView isEqual:self.searchPlay.searchResultsTableView]) {

cell.textLabel.text= [self.resultsArr objectAtIndex:indexPath.row];

}else{

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

}

return cell;

}

#pragma mark -

#pragma mark UISearchDisplayControllerDelegate

//text是输入的文本,scope是搜索范围

- (void) searchText:(NSString*)text andWithScope:(NSString*)scope

{

//CONTAINS是字符串比较操作符，

NSPredicate*result = [NSPredicate predicateWithFormat:@"SELF contains[cd] %@",text];

self.resultsArr= [self.dataArr filteredArrayUsingPredicate:result];

}

- (BOOL) searchDisplayController:(UISearchDisplayController*)controller shouldReloadTableForSearchString:(NSString*)searchString

{

// searchString是输入的文本

//返回结果数据读取搜索范围在选择范围

NSArray*searScope = [self.searchPlay.searchBar scopeButtonTitles];//数组范围

[self searchText:searchString andWithScope:[searScope objectAtIndex:[self.searchPlay.searchBar selectedScopeButtonIndex]]];

return YES;

}

- (BOOL) searchDisplayController:(UISearchDisplayController*)controller shouldReloadTableForSearchScope:(NSInteger)searchOption

{

NSString*inputText =self.searchPlay.searchBar.text;//搜索输入的文本

NSArray*searScope = [self.searchPlay.searchBar scopeButtonTitles];//索索范围

[self searchText:inputText andWithScope:[searScope objectAtIndex:searchOption]];

return YES;

}