IOS UITableView分组与索引分区实例

1 #import <UIKit/UIKit.h>
2 
3 @interface AppDelegate : UIResponder <UIApplicationDelegate>
4 
5 @property (strong, nonatomic) UIWindow *window;
6 
7 
8 @end

 1 #import "AppDelegate.h"
 2 #import "RootViewController.h"
 3 @interface AppDelegate ()
 4 
 5 @end
 6 
 7 @implementation AppDelegate
 8 
 9 
10 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
11     self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
12     // Override point for customization after application launch.
13     self.window.backgroundColor = [UIColor whiteColor];
14     
15     RootViewController *root = [[RootViewController alloc] init];
16     UINavigationController *navi = [[UINavigationController alloc] initWithRootViewController:root];
17     self.window.rootViewController = navi;
18     
19     
20     [self.window makeKeyAndVisible];
21     return YES;
22 }
23 
24 
25 @end

1 #import <UIKit/UIKit.h>
2 
3 @interface RootViewController : UIViewController
4 
5 @end

 1 #import "RootViewController.h"
 2 
 3 @interface RootViewController ()<UITableViewDataSource,UITableViewDelegate>
 4 {
 5     UITableView *_tableView;
 6     NSMutableDictionary *dataDic;
 7 }
 8 @end
 9 
10 @implementation RootViewController
11 
12 - (void)loadView
13 {
14     [super loadView];
15     _tableView = [[UITableView alloc] initWithFrame:[[UIScreen mainScreen] bounds] style:UITableViewStyleGrouped];
16     _tableView.delegate = self;
17     _tableView.dataSource = self;
18     [self.view addSubview:_tableView];
19 }
20 
21 - (void)viewDidLoad {
22     [super viewDidLoad];
23     NSArray *A = [NSArray arrayWithObjects:@"app",@"apple",@"alex",@"alert",@"alright",@"at",@"addic",@"awake",@"action",@"active", nil];
24     NSArray *B = [NSArray arrayWithObjects:@"belance",@"beyond",@"bell",@"bill",@"bet",@"bety",@"bright",@"beaty",@"beat",@"bite",@"bit",@"bake",@"blake",@"basket",@"basketball",@"ball",@"black",@"blue", nil];
25     NSArray *C = [NSArray arrayWithObjects:@"cake",@"cat",@"cap",@"cook",@"cooki",@"cate",@"cell",@"certain",@"city",@"clabe",@"clab",@"copy",@"cry", nil];
26     NSArray *D = [NSArray arrayWithObjects:@"dirty",@"del",@"directly",@"dry",@"dull",@"delly",@"dute", nil];
27     NSArray *E = [NSArray arrayWithObjects:@"elphance",@"every",@"else",@"emperty", nil];
28     NSArray *F = [NSArray arrayWithObjects:@"fly",@"flash",@"flag",@"fate",@"felt",@"fill",@"fell",@"fall",@"font",@"fake",@"flour",@"ferver",@"fetech", nil];
29     NSArray *G = [NSArray arrayWithObjects:@"girl",@"gipe",@"grap",@"gray",@"gay",@"gita",@"git",@"get",@"great",@"glass",@"glasses",@"good",@"google", nil];
30     dataDic = [NSMutableDictionary dictionaryWithObjectsAndKeys:A,@"A",B,@"B",C,@"C",D,@"D",E,@"E",F,@"F",G,@"G", nil];
31 }
32 
33 #pragma mark -UITableView Delegate-
34 
35 - (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView
36 {
37     return [[dataDic allKeys] sortedArrayUsingSelector:@selector(compare:)];
38 }
39 
40 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
41 {
42     return [dataDic allKeys].count;
43 }
44 
45 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
46 {
47     NSArray *keys = [[dataDic allKeys] sortedArrayUsingSelector:@selector(compare:)];
48     NSString *key = keys[section];
49     NSArray *array = dataDic[key];
50     return [array count];
51 }
52 
53 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
54 {
55     NSArray *keys = [[dataDic allKeys] sortedArrayUsingSelector:@selector(compare:)];
56     NSString *key = keys[section];
57     return key;
58 }
59 
60 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
61 {
62     static NSString *identify = @"cell";
63     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identify];
64     if (cell == nil) {
65         cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identify];
66     }
67     NSArray *keys = [[dataDic allKeys] sortedArrayUsingSelector:@selector(compare:)];
68     NSString *key = keys[indexPath.section];
69     NSArray *array = dataDic[key];
70     NSString *content = array[indexPath.row];
71     cell.textLabel.text = content;
72     return cell;
73 }
74 
75 - (void)didReceiveMemoryWarning {
76     [super didReceiveMemoryWarning];
77     // Dispose of any resources that can be recreated.
78 }
79 
80 
81 @end