效果如下：
ViewController.h
1 #import <UIKit/UIKit.h> 2 3 @interface ViewController : UITableViewController 4 @property (strong, nonatomic) NSMutableArray *mArrDataList; 5 @property (strong, nonatomic) NSMutableArray *mArrSortedCollation; 6 7 @end
ViewController.m
1 #import "ViewController.h" 2 #import "Friend.h" 3 4 #define collation [UILocalizedIndexedCollation currentCollation] 5 @interface ViewController () 6 - (void)layoutUI; 7 - (void)loadData; 8 - (void)loadCollationData; 9 @end 10 11 @implementation ViewController 12 13 - (void)viewDidLoad { 14 [super viewDidLoad]; 15 16 [self layoutUI]; 17 } 18 19 - (void)didReceiveMemoryWarning { 20 [super didReceiveMemoryWarning]; 21 // Dispose of any resources that can be recreated. 22 } 23 24 - (void)layoutUI { 25 [self loadData]; 26 [self loadCollationData]; 27 28 self.view.backgroundColor = [UIColor whiteColor]; 29 self.navigationItem.title = @"在单元格中自动排列指定的数据"; 30 } 31 32 /** 33 * 加载数据 34 */ 35 - (void)loadData { 36 NSBundle *bundle = [NSBundle mainBundle]; 37 NSURL *urlFriendsInfo = [bundle URLForResource:@"FriendsInfo" withExtension:@"plist"]; 38 NSDictionary *dicFriendsInfo = [NSDictionary dictionaryWithContentsOfURL:urlFriendsInfo]; 39 NSInteger len = [dicFriendsInfo count]; 40 _mArrDataList = [[NSMutableArray alloc] initWithCapacity:len]; 41 for (NSInteger i=0; i<len; i++) { 42 NSString *strKey = [NSString stringWithFormat:@"%lu", (unsigned long)(i+1)]; 43 NSDictionary *dicData = [dicFriendsInfo objectForKey:strKey]; 44 45 Friend *friend = [[Friend alloc] initName:[dicData objectForKey:@"name"] 46 withDesc:[dicData objectForKey:@"desc"] 47 withLocation:[dicData objectForKey:@"location"] 48 withImgIcon:[UIImage imageNamed:strKey]]; 49 [_mArrDataList addObject:friend]; 50 } 51 } 52 53 /** 54 * 加载排序规则数据 55 */ 56 - (void)loadCollationData { 57 //UILocalizedIndexedCollation *collation = [UILocalizedIndexedCollation currentCollation]; 58 NSUInteger sectionCount = [collation sectionTitles].count; //分组总数为27；即A-Z, #。（[collation sectionTitles]和[collation sectionIndexTitles]的值是相同的，指针地址不同） 59 NSLog(@"排序规则分组标题是%@", [collation sectionTitles]); 60 61 //创建包含2层嵌套内容的可变长数组mArrCollation 62 NSMutableArray *mArrCollation = [[NSMutableArray alloc] initWithCapacity:sectionCount]; //第1层 63 for (NSUInteger i=0; i< sectionCount; i++) { 64 [mArrCollation addObject:[[NSMutableArray alloc] initWithCapacity:1]]; //第2层 65 } 66 67 for (Friend *friend in _mArrDataList) { 68 NSInteger section = [collation sectionForObject:friend 69 collationStringSelector:@selector(name)]; //注意这里使用排序规则的方法，需为对象；不能为NSDictionary（无法找到适合的selector） 70 [mArrCollation[section] addObject:friend]; 71 } 72 73 //将mArrCollation的第2层数据进行排序并逐个分组添加到新的可变长数组_mArrSortedCollation 74 _mArrSortedCollation = [[NSMutableArray alloc] initWithCapacity:sectionCount]; 75 for (NSMutableArray *mArrSection in mArrCollation) { 76 NSArray *arrSortedSection = [collation sortedArrayFromArray:mArrSection 77 collationStringSelector:@selector(name)]; //注意这里使用排序规则的方法，需为对象；不能为NSDictionary（无法找到适合的selector） 78 [_mArrSortedCollation addObject:arrSortedSection]; 79 } 80 } 81 82 #pragma mark - TableView 83 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { 84 NSString *strTitle = nil; 85 if ([_mArrSortedCollation[section] count] > 0) { 86 strTitle = [collation sectionTitles][section]; 87 } 88 return strTitle; 89 } 90 91 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 92 return _mArrSortedCollation.count; 93 } 94 95 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { 96 return [_mArrSortedCollation[section] count]; 97 } 98 99 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 100 static NSString *cellIdentifier = @"cellIdentifier"; 101 UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; 102 if (!cell) { 103 cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentifier]; 104 } 105 106 Friend *friend = _mArrSortedCollation[indexPath.section][indexPath.row]; 107 cell.textLabel.text = friend.name; 108 cell.detailTextLabel.text = friend.desc; 109 cell.imageView.image = friend.imgIcon; 110 111 return cell; 112 113 114 /* 115 UITableViewCellStyleDefault：带imageView；只含水平居左的textLabel 116 UITableViewCellStyleValue1：带imageView；含水平居左的textLabel和水平居右的detailTextLabel（左右结构） 117 UITableViewCellStyleValue2：不带imageView；含水平居左的textLabel和水平居左的detailTextLabel（左右结构） 118 UITableViewCellStyleSubtitle：带imageView；含垂直居上的textLabel和垂直居下的detailTextLabel（上下结构） 119 */ 120 121 /* 122 typedef NS_ENUM(NSInteger, UITableViewCellStyle) { 123 UITableViewCellStyleDefault, // Simple cell with text label and optional image view (behavior of UITableViewCell in iPhoneOS 2.x) 124 UITableViewCellStyleValue1, // Left aligned label on left and right aligned label on right with blue text (Used in Settings) 125 UITableViewCellStyleValue2, // Right aligned label on left with blue text and left aligned label on right (Used in Phone/Contacts) 126 UITableViewCellStyleSubtitle // Left aligned label on top and left aligned label on bottom with gray text (Used in iPod). 127 }; // available in iPhone OS 3.0 128 */ 129 } 130 131 - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { 132 return 60.0; 133 } 134 135 #pragma mark - TableView, sectionIndexTitle 136 - (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView { 137 return [collation sectionIndexTitles]; 138 } 139 140 - (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index { 141 return [collation sectionForSectionIndexTitleAtIndex:index]; 142 } 143 144 @end
Friend.h
1 #import <Foundation/Foundation.h> 2 #import <UIKit/UIKit.h> 3 4 @interface Friend : NSObject 5 @property (copy, nonatomic) NSString *name; 6 @property (copy, nonatomic) NSString *desc; 7 @property (copy, nonatomic) NSString *location; 8 @property (strong, nonatomic) UIImage *imgIcon; 9 - (id)initName:(NSString *)name withDesc:(NSString *)desc withLocation:(NSString *)location withImgIcon:(UIImage *)imgIcon; 10 11 @end
Friend.m
1 #import "Friend.h" 2 3 @implementation Friend 4 5 - (id)initName:(NSString *)name withDesc:(NSString *)desc withLocation:(NSString *)location withImgIcon:(UIImage *)imgIcon { 6 if (self = [super init]) { 7 self.name = name; 8 self.desc = desc; 9 self.location = location; 10 self.imgIcon = imgIcon; 11 } 12 return self; 13 } 14 15 @end
AppDelegate.h
1 #import <UIKit/UIKit.h> 2 3 @interface AppDelegate : UIResponder <UIApplicationDelegate> 4 @property (strong, nonatomic) UIWindow *window; 5 @property (strong, nonatomic) UINavigationController *navigationController; 6 7 @end
AppDelegate.m
1 #import "AppDelegate.h" 2 #import "ViewController.h" 3 4 @interface AppDelegate () 5 @end 6 7 @implementation AppDelegate 8 9 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { 10 _window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; 11 ViewController *viewController = [[ViewController alloc] init]; 12 _navigationController = [[UINavigationController alloc] initWithRootViewController:viewController]; 13 _window.rootViewController = _navigationController; 14 //[_window addSubview:_navigationController.view]; //当_window.rootViewController关联时，这一句可有可无 15 [_window makeKeyAndVisible]; 16 return YES; 17 } 18 19 - (void)applicationWillResignActive:(UIApplication *)application { 20 } 21 22 - (void)applicationDidEnterBackground:(UIApplication *)application { 23 } 24 25 - (void)applicationWillEnterForeground:(UIApplication *)application { 26 } 27 28 - (void)applicationDidBecomeActive:(UIApplication *)application { 29 } 30 31 - (void)applicationWillTerminate:(UIApplication *)application { 32 } 33 34 @end
FriendsInfo.plist
1 <?xml version="1.0" encoding="UTF-8"?> 2 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> 3 <plist version="1.0"> 4 <dict> 5 <key>1</key> 6 <dict> 7 <key>name</key> 8 <string>小明</string> 9 <key>desc</key> 10 <string>干啥呢？</string> 11 <key>location</key> 12 <string>广州</string> 13 </dict> 14 <key>2</key> 15 <dict> 16 <key>name</key> 17 <string>痞子</string> 18 <key>desc</key> 19 <string>好好学习，天天向上！</string> 20 <key>location</key> 21 <string>广州</string> 22 </dict> 23 <key>3</key> 24 <dict> 25 <key>name</key> 26 <string>疯子</string> 27 <key>desc</key> 28 <string>倚楼听风雨，淡看江湖路。</string> 29 <key>location</key> 30 <string>广州</string> 31 </dict> 32 <key>4</key> 33 <dict> 34 <key>name</key> 35 <string>梦醒</string> 36 <key>desc</key> 37 <string>书到用时方恨少</string> 38 <key>location</key> 39 <string>广州</string> 40 </dict> 41 <key>5</key> 42 <dict> 43 <key>name</key> 44 <string>落落</string> 45 <key>desc</key> 46 <string>生日快乐！</string> 47 <key>location</key> 48 <string>广州</string> 49 </dict> 50 <key>6</key> 51 <dict> 52 <key>name</key> 53 <string>丫丫</string> 54 <key>desc</key> 55 <string>做个踏实的科研女</string> 56 <key>location</key> 57 <string>广州</string> 58 </dict> 59 <key>7</key> 60 <dict> 61 <key>name</key> 62 <string>乐天平</string> 63 <key>desc</key> 64 <string>在火车上</string> 65 <key>location</key> 66 <string>广州</string> 67 </dict> 68 <key>8</key> 69 <dict> 70 <key>name</key> 71 <string>北暮</string> 72 <key>desc</key> 73 <string>好久不见！</string> 74 <key>location</key> 75 <string>广州</string> 76 </dict> 77 <key>9</key> 78 <dict> 79 <key>name</key> 80 <string>苹果</string> 81 <key>desc</key> 82 <string>喜欢苹果，更喜欢青苹果！</string> 83 <key>location</key> 84 <string>广州</string> 85 </dict> 86 <key>10</key> 87 <dict> 88 <key>name</key> 89 <string>木头</string> 90 <key>desc</key> 91 <string>清心薄欲 静躁作学</string> 92 <key>location</key> 93 <string>广州</string> 94 </dict> 95 <key>11</key> 96 <dict> 97 <key>name</key> 98 <string>醉清风</string> 99 <key>desc</key> 100 <string>一醉解千愁</string> 101 <key>location</key> 102 <string>广州</string> 103 </dict> 104 <key>12</key> 105 <dict> 106 <key>name</key> 107 <string>浅の斯</string> 108 <key>desc</key> 109 <string>想剪短发……剪还是不剪(⊙o⊙)？</string> 110 <key>location</key> 111 <string>广州</string> 112 </dict> 113 <key>13</key> 114 <dict> 115 <key>name</key> 116 <string>虚伪</string> 117 <key>desc</key> 118 <string>讨厌虚伪</string> 119 <key>location</key> 120 <string>广州</string> 121 </dict> 122 <key>14</key> 123 <dict> 124 <key>name</key> 125 <string>阁楼</string> 126 <key>desc</key> 127 <string>窗外的风景。</string> 128 <key>location</key> 129 <string>广州</string> 130 </dict> 131 </dict> 132 </plist>