IOS开发之表视图添加索引

我们要实现的效果如下。

   

 

1.修改ControlView.h,即添加变量dict,用于存储TabelView的数据源。

Cpp代码  
  1. #import <UIKit/UIKit.h>  
  2.   
  3. @interface IkrboyViewController5 : UIViewController{  
  4.     NSMutableDictionary *dict;  
  5. }  
  6.   
  7. @end  
#import <UIKit/UIKit.h>

@interface IkrboyViewController5 : UIViewController{
    NSMutableDictionary *dict;
}

@end

 2.在ControlView.m添加如下修改

Cpp代码  
  1. - (void)viewDidLoad  
  2. {  
  3.     [super viewDidLoad];  
  4.     [self initTableViewData];  
  5.     // Do any additional setup after loading the view.  
  6. }  
  7.   
  8. -(void)initTableViewData{  
  9.     NSBundle *bundle = [NSBundle mainBundle];  
  10.     NSString *plistPath = [bundle pathForResource:@"user_head" ofType:@"plist"];  
  11.     NSArray *dataArr = [[NSArray alloc] initWithContentsOfFile:plistPath];  
  12.     //将所有数据分为三组  
  13.     NSMutableArray *arr1 = [NSMutableArray array];  
  14.     NSMutableArray *arr2 = [NSMutableArray array];  
  15.     NSMutableArray *arr3 = [NSMutableArray array];  
  16.       
  17.     dict = [NSMutableDictionary dictionary];  
  18.     [dict setObject:arr1 forKey:@"Group1"];  
  19.     [dict setObject:arr2 forKey:@"Group2"];  
  20.     [dict setObject:arr3 forKey:@"Group3"];  
  21.       
  22.     //设置划分数据的依据,即根据index分三组,index为0-1的为第一组,2-4为第二组,5为第三组  
  23.     for(NSInteger index = 0; index < [dataArr count]; index++){  
  24.         NSDictionary *item = [dataArr objectAtIndex:index];  
  25.         if(index<2){  
  26.             [arr1 addObject:item];  
  27.         }  
  28.         else if(index>=2&&index<5){  
  29.             [arr2 addObject:item];  
  30.         }  
  31.         else if(index>=5){  
  32.             [arr3 addObject:item];  
  33.         }  
  34.     }  
  35. }  
- (void)viewDidLoad
{
    [super viewDidLoad];
    [self initTableViewData];
	// Do any additional setup after loading the view.
}

-(void)initTableViewData{
    NSBundle *bundle = [NSBundle mainBundle];
    NSString *plistPath = [bundle pathForResource:@"user_head" ofType:@"plist"];
    NSArray *dataArr = [[NSArray alloc] initWithContentsOfFile:plistPath];
    //将所有数据分为三组
    NSMutableArray *arr1 = [NSMutableArray array];
    NSMutableArray *arr2 = [NSMutableArray array];
    NSMutableArray *arr3 = [NSMutableArray array];
    
    dict = [NSMutableDictionary dictionary];
    [dict setObject:arr1 forKey:@"Group1"];
    [dict setObject:arr2 forKey:@"Group2"];
    [dict setObject:arr3 forKey:@"Group3"];
    
    //设置划分数据的依据,即根据index分三组,index为0-1的为第一组,2-4为第二组,5为第三组
    for(NSInteger index = 0; index < [dataArr count]; index++){
        NSDictionary *item = [dataArr objectAtIndex:index];
        if(index<2){
            [arr1 addObject:item];
        }
        else if(index>=2&&index<5){
            [arr2 addObject:item];
        }
        else if(index>=5){
            [arr3 addObject:item];
        }
    }
}

 3.初始化TableView

Cpp代码  
  1. //分为多少个分组  
  2. - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView  
  3. {  
  4.     return [[dict allKeys] count];  
  5. }  
  6. //每个分组的数据单元个数  
  7. - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section  
  8. {  
  9.     switch(section)  
  10.     {  
  11.         case 0:  
  12.         {  
  13.             return [[dict objectForKey:@"Group1"] count];  
  14.         }  
  15.         case 1:  
  16.         {  
  17.             return [[dict objectForKey:@"Group2"] count];  
  18.         }  
  19.         case 2:  
  20.         {  
  21.             return [[dict objectForKey:@"Group3"] count];  
  22.         }  
  23.     }  
  24.     return 0;  
  25. }  
  26. //分组的标题,不实现下面的方法,不显示分组标题  
  27. - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section  
  28. {  
  29.     //dict allKeys取出的key arr无顺序,需进行排序  
  30.     NSArray *arr = [[dict allKeys] sortedArrayUsingSelector:@selector(compare:)];  
  31.     return [arr objectAtIndex:section];  
  32. }  
  33. //列表右侧的索引提示,不实现下面的方法,不显示右侧索引  
  34. -(NSArray *) sectionIndexTitlesForTableView: (UITableView *) tableView  
  35. {  
  36.     //dict allKeys取出的key arr无顺序,需进行排序  
  37.     NSArray *arr = [[dict allKeys] sortedArrayUsingSelector:@selector(compare:)];  
  38.     return arr;  
  39. }  
  40.   
  41. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath  
  42. {  
  43.     static NSString *CellIdentifier = @"myTableCell";  
  44.     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];  
  45.       
  46.     NSUInteger row = [indexPath row];  
  47.     NSUInteger section = [indexPath section];  
  48.     NSArray *arr;  
  49.       
  50.     switch (section) {  
  51.         case 0:  
  52.             arr = [dict objectForKey:@"Group1"];  
  53.             break;  
  54.         case 1:  
  55.             arr = [dict objectForKey:@"Group2"];  
  56.             break;  
  57.         case 2:  
  58.             arr = [dict objectForKey:@"Group3"];  
  59.             break;  
  60.         default:  
  61.             break;  
  62.     }  
  63.       
  64.     NSDictionary *rowDict = [arr objectAtIndex:row];  
  65.     cell.textLabel.text =  [rowDict objectForKey:@"itemName"];  
  66.     NSLog(@"cell.label.text =  %@",[rowDict objectForKey:@"itemName"]);  
  67.       
  68.     NSString *imagePath = [rowDict objectForKey:@"itemImagePath"];  
  69.     cell.imageView.image = [UIImage imageNamed:imagePath];  
  70.     NSLog(@"cell.image.image  =  %@",imagePath);  
  71.       
  72.     cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;  
  73.       
  74.     return cell;  
  75. }  
  76.   
  77. //选中Cell响应事件  
  78. - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{  
  79.     [tableView deselectRowAtIndexPath:indexPath animated:YES];//选中后的反显颜色即刻消失  
  80.     NSUInteger row = [indexPath row];  
  81.     NSUInteger section = [indexPath section];  
  82.     NSArray *arr;  
  83.       
  84.     switch (section) {  
  85.         case 0:  
  86.             arr = [dict objectForKey:@"Group1"];  
  87.             break;  
  88.         case 1:  
  89.             arr = [dict objectForKey:@"Group2"];  
  90.             break;  
  91.         case 2:  
  92.             arr = [dict objectForKey:@"Group3"];  
  93.             break;  
  94.         default:  
  95.             break;  
  96.     }  
  97.       
  98.     NSDictionary *rowDict = [arr objectAtIndex:row];  
  99.     NSString *userName =  [rowDict objectForKey:@"itemName"];  
  100.     NSLog(@"userName=%@",userName);  
  101. }  
//分为多少个分组
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
	return [[dict allKeys] count];
}
//每个分组的数据单元个数
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    switch(section)
    {
        case 0:
        {
            return [[dict objectForKey:@"Group1"] count];
        }
        case 1:
        {
            return [[dict objectForKey:@"Group2"] count];
        }
        case 2:
        {
            return [[dict objectForKey:@"Group3"] count];
        }
    }
    return 0;
}
//分组的标题,不实现下面的方法,不显示分组标题
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
    //dict allKeys取出的key arr无顺序,需进行排序
    NSArray *arr = [[dict allKeys] sortedArrayUsingSelector:@selector(compare:)];
	return [arr objectAtIndex:section];
}
//列表右侧的索引提示,不实现下面的方法,不显示右侧索引
-(NSArray *) sectionIndexTitlesForTableView: (UITableView *) tableView
{
    //dict allKeys取出的key arr无顺序,需进行排序
    NSArray *arr = [[dict allKeys] sortedArrayUsingSelector:@selector(compare:)];
    return arr;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"myTableCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    
    NSUInteger row = [indexPath row];
    NSUInteger section = [indexPath section];
    NSArray *arr;
    
    switch (section) {
        case 0:
            arr = [dict objectForKey:@"Group1"];
            break;
        case 1:
            arr = [dict objectForKey:@"Group2"];
            break;
        case 2:
            arr = [dict objectForKey:@"Group3"];
            break;
        default:
            break;
    }
    
    NSDictionary *rowDict = [arr objectAtIndex:row];
    cell.textLabel.text =  [rowDict objectForKey:@"itemName"];
    NSLog(@"cell.label.text =  %@",[rowDict objectForKey:@"itemName"]);
    
    NSString *imagePath = [rowDict objectForKey:@"itemImagePath"];
    cell.imageView.image = [UIImage imageNamed:imagePath];
    NSLog(@"cell.image.image  =  %@",imagePath);
    
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    
    return cell;
}

//选中Cell响应事件
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    [tableView deselectRowAtIndexPath:indexPath animated:YES];//选中后的反显颜色即刻消失
    NSUInteger row = [indexPath row];
    NSUInteger section = [indexPath section];
    NSArray *arr;
    
    switch (section) {
        case 0:
            arr = [dict objectForKey:@"Group1"];
            break;
        case 1:
            arr = [dict objectForKey:@"Group2"];
            break;
        case 2:
            arr = [dict objectForKey:@"Group3"];
            break;
        default:
            break;
    }
    
    NSDictionary *rowDict = [arr objectAtIndex:row];
    NSString *userName =  [rowDict objectForKey:@"itemName"];
    NSLog(@"userName=%@",userName);
}

 

 

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