1 前言
昨天工作時候遇到TableView的建立索引問題，由於有的時候TableView之中的數據量十分之大，以至於需要在右側建立索引來搜索，今日特意整理於下面，供大家參考，互相學習。

2 代碼實例
ZYViewController.h

[plain]
#import <UIKit/UIKit.h> 
 
@interface ZYViewController : UITableViewController 
<UITableViewDataSource, UITableViewDelegate> 
//設置索引標題 
@property(nonatomic,retain)NSMutableArray *indexArray; 
//設置每個section下的cell內容 
@property(nonatomic,retain)NSArray *dataArray1; 
@property(nonatomic,retain)NSArray *dataArray2; 
@property(nonatomic,retain)NSArray *dataArray3; 
@end 

#import <UIKit/UIKit.h>

@interface ZYViewController : UITableViewController
<UITableViewDataSource, UITableViewDelegate>
//設置索引標題
@property(nonatomic,retain)NSMutableArray *indexArray;
//設置每個section下的cell內容
@property(nonatomic,retain)NSArray *dataArray1;
@property(nonatomic,retain)NSArray *dataArray2;
@property(nonatomic,retain)NSArray *dataArray3;
@end
ZYViewController.m

 

[plain]
@synthesize dataArray1,dataArray2,dataArray3; 
@synthesize indexArray; 
 
- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    NSArray *array1=[[NSArray alloc] initWithObjects:@"A",@"B",@"C",@"D",@"E" ,nil]; 
    NSArray *array2=[[NSArray alloc] initWithObjects:@"F",@"G",@"H",@"I",@"J", nil]; 
    NSArray *array3=[[NSArray alloc] initWithObjects:@"K",@"L",@"M",@"N",@"O", nil]; 
    self.dataArray1=array1; 
    self.dataArray2 = array2; 
    self.dataArray3 = array3; 
    //給數組賦值 
    NSMutableArray *array = [[NSMutableArray alloc] initWithCapacity:5]; 
    self.indexArray = array; 
    [array release]; 
    [indexArray addObjectsFromArray:array1]; 
    [indexArray addObjectsFromArray:array2]; 
    [indexArray addObjectsFromArray:array3]; 
    [array1 release]; 
    [array2 release]; 
    [array3 release]; 
} 
//設置Section的Header的值 
- (NSString *)tableView:(UITableView *)tableView 
 
titleForHeaderInSection:(NSInteger)section { 
     
    NSString *key = [indexArray objectAtIndex:section]; 
     
    return key; 
     
} 
 
#pragma mark - 
 
#pragma mark Table View Data Source Methods 
 
//設置表格的索引數組 
-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView 
{ 
    return self.indexArray; 
} 
////允許數據源告知必須加載到Table View中的表的Section數。 
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{ 
 
    return 3; 
} 
//設置表格的行數為數組的元素個數 
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
    if (section==0) { 
         return [self.dataArray1 count]; 
    }else if(section==1) 
        return dataArray2.count; 
    else  
        return dataArray3.count; 
    
} 
//每一行的內容為數組相應索引的值 
// Customize the appearance of table view cells. 
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    static NSString *CellIdentifier = @"Cell"; 
     
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
    if (cell == nil) 
    { 
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; 
        cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; 
    } 
    if(indexPath.section==0) 
    //設置單元格的字符串內容 
    cell.textLabel.text=[self->dataArray1 objectAtIndex:indexPath.row]; 
    else if(indexPath.section==1) 
        //設置單元格的字符串內容 
        cell.textLabel.text=[self->dataArray2 objectAtIndex:indexPath.row]; 
    else 
        //設置單元格的字符串內容 
        cell.textLabel.text=[self->dataArray3 objectAtIndex:indexPath.row]; 
    return cell; 
} 
-(void)dealloc{ 
    [indexArray release]; 
    [dataArray1 release]; 
    [dataArray2 release]; 
    [dataArray3 release]; 
    [super dealloc]; 
} 

@synthesize dataArray1,dataArray2,dataArray3;
@synthesize indexArray;

- (void)viewDidLoad
{
    [super viewDidLoad];
    NSArray *array1=[[NSArray alloc] initWithObjects:@"A",@"B",@"C",@"D",@"E" ,nil];
    NSArray *array2=[[NSArray alloc] initWithObjects:@"F",@"G",@"H",@"I",@"J", nil];
    NSArray *array3=[[NSArray alloc] initWithObjects:@"K",@"L",@"M",@"N",@"O", nil];
    self.dataArray1=array1;
    self.dataArray2 = array2;
    self.dataArray3 = array3;
    //給數組賦值
    NSMutableArray *array = [[NSMutableArray alloc] initWithCapacity:5];
    self.indexArray = array;
    [array release];
    [indexArray addObjectsFromArray:array1];
    [indexArray addObjectsFromArray:array2];
    [indexArray addObjectsFromArray:array3];
    [array1 release];
    [array2 release];
    [array3 release];
}
//設置Section的Header的值
- (NSString *)tableView:(UITableView *)tableView

titleForHeaderInSection:(NSInteger)section {
   
    NSString *key = [indexArray objectAtIndex:section];
   
    return key;
   
}

#pragma mark -

#pragma mark Table View Data Source Methods

//設置表格的索引數組
-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView
{
    return self.indexArray;
}
////允許數據源告知必須加載到Table View中的表的Section數。
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{

    return 3;
}
//設置表格的行數為數組的元素個數
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    if (section==0) {
         return [self.dataArray1 count];
    }else if(section==1)
        return dataArray2.count;
    else
        return dataArray3.count;
  
}
//每一行的內容為數組相應索引的值
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";
   
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil)
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
        cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    }
    if(indexPath.section==0)
    //設置單元格的字符串內容
    cell.textLabel.text=[self->dataArray1 objectAtIndex:indexPath.row];
    else if(indexPath.section==1)
        //設置單元格的字符串內容
        cell.textLabel.text=[self->dataArray2 objectAtIndex:indexPath.row];
    else
        //設置單元格的字符串內容
        cell.textLabel.text=[self->dataArray3 objectAtIndex:indexPath.row];
    return cell;
}
-(void)dealloc{
    [indexArray release];
    [dataArray1 release];
    [dataArray2 release];
    [dataArray3 release];
    [super dealloc];
}
運行結果：