iOS tableview 간단 한 검색 기능 구현

본 논문 의 사례 는 tableview 가 검색 기능 을 실현 하 는 구체 적 인 코드 를 공유 하여 여러분 께 참고 하 시기 바 랍 니 다.구체 적 인 내용 은 다음 과 같 습 니 다.
1.먼저 xcode 로 프로젝트 를 만 듭 니 다.

보기 컨트롤 러 를 xib 파일 로 초기 화 합 니 다.

코드 작성
1.먼저 NSDictionary 에 사전 의 깊 은 복사 분 류 를 만 듭 니 다.
.h 파일

#import <Foundation/Foundation.h>

@interface NSDictionary (MutableDeepCopy)

- (NSMutableDictionary *)mutableDeepCopy;
@end

파일

#import "NSDictionary+MutableDeepCopy.h"

@implementation NSDictionary (MutableDeepCopy)

- (NSMutableDictionary *)mutableDeepCopy
{
 NSMutableDictionary *mutableDictionary = [NSMutableDictionary dictionaryWithCapacity:[self count]]; //            ,                  count
 NSArray *keys = [self allKeys]; //self        
 for(id key in keys)
 {
  id dicValue = [self valueForKey:key]; 
  //  NSDictionary           objectForkey valueForKey
  id dicCopy = nil;
  if([dicValue respondsToSelector:@selector(mutableDeepCopy)]) 
  //        mutabledeepcopy           dicValue          
  {
   dicCopy = [dicValue mutableDeepCopy];
  }
  else if([dicValue respondsToSelector:@selector(mutableCopy)])
  {
   dicCopy = [dicValue mutableCopy];
  }
  if(dicCopy ==nil)
  {
   dicCopy = [dicValue copy];
  }
  [mutableDictionary setValue:dicCopy forKey:key];
 }
 return mutableDictionary;
}
@end

2.메 인 코드 작성
.h 파일
NoteScanViewController.h

#import <UIKit/UIKit.h>

@interface NoteScanViewController : UIViewController <UITableViewDataSource,UITableViewDelegate,UISearchBarDelegate>

@property (nonatomic,retain)NSMutableDictionary *words;
@property (nonatomic,retain)NSMutableArray *keys;
@property (weak, nonatomic) IBOutlet UITableView *table;
@property (weak, nonatomic) IBOutlet UISearchBar *search;

@property (nonatomic,retain)NSDictionary *allWords;
- (void)resetSearch;
- (void)handleSearchForTerm:(NSString *)searchTerm;

@end

파일

#import "NoteScanViewController.h"
#import "NSDictionary+MutableDeepCopy.h"
@interface NoteScanViewController ()

@end

@implementation NoteScanViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
 self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
 if (self) {
  // Custom initialization
 }
 return self;
}


- (void)viewDidLoad //           
{
 [super viewDidLoad];
 /*  plist  */
 NSString *wordsPath = [[NSBundle mainBundle]pathForResource:@"NoteSection" ofType:@"plist"];//         
 NSDictionary *dictionary = [[NSDictionary alloc]initWithContentsOfFile:wordsPath];
 self.allWords = dictionary;
 [self resetSearch]; //     words     keys  
 
 _search.autocapitalizationType = UITextAutocapitalizationTypeNone;//     
 _search.autocorrectionType = UITextAutocorrectionTypeNo;//     
}

//            
- (void)resetSearch
{
 self.words = [self.allWords mutableDeepCopy]; //                
 NSLog(@"     = %@",self.words);
 NSMutableArray *keyArray = [[NSMutableArray alloc]init];//        
 [keyArray addObjectsFromArray:[[self.allWords allKeys]sortedArrayUsingSelector:@selector(compare:)]]; //    selector array       
 self.keys = keyArray; //   key         
 NSLog(@"  key = %@",self.keys);
}
//      
- (void)handleSearchForTerm:(NSString *)searchTerm
{
 NSMutableArray *sectionsRemove = [[NSMutableArray alloc]init]; //                 
 [self resetSearch];
 for(NSString *key in self.keys)//     key
 {
  NSMutableArray *array = [_words valueForKey:key] ;  //     key      
  NSMutableArray *toRemove = [[NSMutableArray alloc]init];//   words        
  for(NSString *word in array) //    
  {
   if([word rangeOfString:searchTerm options:NSCaseInsensitiveSearch].location == NSNotFound)//                             
    [toRemove addObject:word]; //           toRemove  
  }
  
  if([array count] == [toRemove count])//                       
   [sectionsRemove addObject:key]; //           
  [array removeObjectsInArray:toRemove]; //             toRemove       
 }
 [self.keys removeObjectsInArray:sectionsRemove];//     key         ，           ，     table         
 [_table reloadData];
}

- (void)viewWillAppear:(BOOL)animated //   Push  prenset    
{
}
//#pragma mark -
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
 return ([_keys count] >0)?[_keys count]:1; //                       
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
 if([_keys count] == 0)
 {
  return 0;
 }
 NSString *key = [_keys objectAtIndex:section]; //      key
 NSArray *wordSection = [_words objectForKey:key]; //    key       
 return [wordSection count]; //       
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
 NSUInteger section = [indexPath section]; //     
 NSUInteger row = [indexPath row]; //     
 NSString *key = [_keys objectAtIndex:section]; //      key
 NSArray *wordSection = [_words objectForKey:key]; //    key       
 static NSString *NoteSectionIdentifier = @"NoteSectionIdentifier";
 UITableViewCell *cell =[tableView dequeueReusableCellWithIdentifier:NoteSectionIdentifier];
 if(cell == nil)
 {
  cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:NoteSectionIdentifier];
  
 }
 cell.textLabel.text = [wordSection objectAtIndex:row];
 return cell;
}
//           
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
 if([_keys count] == 0)
  return @" ";
 NSString *key = [_keys objectAtIndex:section];
 return key;
}
//       
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView
{
 return _keys;
}
#pragma mark - 

- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
 [_search resignFirstResponder]; //     cell      
 return indexPath;
}

#pragma mark-

- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar //  button    
{
 NSString *searchTerm = [searchBar text];
 [self handleSearchForTerm:searchTerm]; //       words            
}

- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{ //               
 if([searchText length] == 0)
 {
  [self resetSearch];
  [_table reloadData];
  return;
 }
 else
  [self handleSearchForTerm:searchText];
}

- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar //      
{
 _search.text = @""; //     
 [self resetSearch]; //         
 [_table reloadData];
 [searchBar resignFirstResponder]; //    

}
@end

실행 결과

이상 이 바로 본 고의 모든 내용 입 니 다.여러분 의 학습 에 도움 이 되 고 저 희 를 많이 응원 해 주 셨 으 면 좋 겠 습 니 다.