Use of search box Uisearchbar and search methods in iOS

The search box can be uisearchbar, and proxy uisearchbardelegate can be set.

1-(void) addsearchbar{2CGRect Searchbarrect = CGRectMake (0,0, Self.view.frame.size.width, -);3Uisearchbar *searchbar =[[Uisearchbar alloc]initwithframe:searchbarrect];4Searchbar.placeholder =@"Plrase Enter key word";5Self.tableView.tableHeaderView =Searchbar;6     //Set the Cancel button next to the search box7Searchbar.showscancelbutton =YES;8     //Set the search scope9Searchbar.showsscopebar =YES;TenSearchbar.scopebuttontitles = [Nsarray arraywithobjects:@"name",@"Sex",@"School Number", nil]; One     //Agent ASearchbar.Delegate=Self ; -}

Effect

The processing of the result search is also not very cumbersome, the principle is whether the string contains search keywords, and then refresh TableView

// contact.firstname for all data, keyword for search keywords if ([contact.firstName.uppercaseString containsString:keyWord.uppercaseString]) {    [_searchcontacts addobject : contact];}

Implementing proxies can be used

#pragma mark search box agent #pragma Mark Cancel Search-(void) searchbarcancelbuttonclicked: (Uisearchbar * ) searchbar{    // Discard First Responder object, turn off soft keyboard     [Self.searchbar resignfirstresponder];} #pragma Mark Enter search keywords-(void) Searchbar: (Uisearchbar *) Searchbar textdidchange: (NSString *) searchtext{    }#pragma mark clicks Search on the virtual keyboard-(void) searchbarsearchbuttonclicked: ( Uisearchbar *) searchbar{    [Self.searchbar resignfirstresponder];}

The effect is as follows:

can also use a simpler uisearchdisplaycontroller, it has a UITableView type of object Searchresultstableview, you can not use the top 3 agents. You only need to implement 1. Uisearchdisplaycontroller can also be automatically full-screen when using Uinavavigationcontroller, the effect is

#pragma Mark-uisearchdisplaycontroller Proxy Method-(BOOL) Searchdisplaycontroller: (Uisearchdisplaycontroller *) Controller shouldreloadtableforsearchstring: (NSString *) searchstring{    [self Searchdatawithkeyword: SearchString];     return YES;}

When adding Uisearchdisplaycontroller, there are two ways to do it. Need to be aware, otherwise it will be reported
Property ' Searchdisplaycontroller ' attempting-use instance variable ' _searchdisplaycontroller ' declared in Super class ' Uiviewcontroller '
The first, in the form of property, requires @synthesize modification to

@interfaceContactstableviewcontroller () <UISearchBarDelegate,UISearchDisplayDelegate>@property (nonatomic,strong) Uisearchbar*Searchbar, @property (nonatomic,strong) Uisearchdisplaycontroller*Searchdisplaycontroller;@end@implementationContactstableviewcontroller//need to be decorated with synthesize@synthesizeSearchdisplaycontroller;//the Add search bar at this point can be used-(void) addsearchbar{_searchbar=[[Uisearchbar alloc]init]; [_searchbar SizeToFit];//Size Adaptive Container_searchbar.placeholder =@"Plrase Enter key word"; _searchbar.autocapitalizationtype=Uitextautocapitalizationtypenone; _searchbar.showscancelbutton= YES;//Show Cancel button_searchbar.Delegate=Self ; Self.tableView.tableHeaderView=_searchbar; Self.searchdisplaycontroller=[[Uisearchdisplaycontroller Alloc]initwithsearchbar:self.searchbar contentscontroller:self]; Self.searchdisplaycontroller.Delegate=Self ; Self.searchDisplayController.searchResultsDataSource=Self ; Self.searchDisplayController.searchResultsDelegate=Self ; [Self.searchdisplaycontroller Setactive:no animated:yes];}@end

The second, with an underlined form, without @synthesize modification

@interfaceContactstableviewcontroller () <UISearchBarDelegate,UISearchDisplayDelegate>{Uisearchdisplaycontroller*_searchdisplaycontroller;} @property (nonatomic,strong) Uisearchbar*Searchbar;@end@implementationContactstableviewcontroller//at this point, add the search bar to-(void) addsearchbar{Self.searchbar=[[Uisearchbar alloc]init]; [Self.searchbar SizeToFit];//Size Adaptive ContainerSelf.searchBar.placeholder =@"Plrase Enter key word"; Self.searchBar.autocapitalizationType=Uitextautocapitalizationtypenone; Self.searchBar.showsCancelButton= YES;//Show Cancel buttonSelf.searchbar.Delegate=Self ; Self.tableView.tableHeaderView=Self.searchbar; _searchdisplaycontroller=[[Uisearchdisplaycontroller Alloc]initwithsearchbar:self.searchbar contentscontroller:self]; _searchdisplaycontroller.Delegate=Self ; _searchdisplaycontroller.searchresultsdatasource=Self ; _searchdisplaycontroller.searchresultsdelegate=Self ; [_searchdisplaycontroller Setactive:no animated:yes];}@end

Use of search box Uisearchbar and search methods in iOS