UITableView 实现A1A2---Z1Z2.。。。。

 1 //
 2 //  ViewController.h
 3 //  TableView
 4 //
 5 //  Created by wky on 11/10/2017.
 6 //  Copyright © 2017 vector. All rights reserved.
 7 //
 8 
 9 #import <UIKit/UIKit.h>
10 
11 @interface ViewController : UIViewController
12 <UITableViewDelegate,UITableViewDataSource>
13 {
14     UITableView* _tableView;
15     NSMutableArray* _arrayData;
16 }
17 
18 
19 @end

 1 //
 2 //  ViewController.m
 3 //  TableView
 4 //
 5 //  Created by wky on 11/10/2017.
 6 //  Copyright © 2017 vector. All rights reserved.
 7 //
 8 
 9 #import "ViewController.h"
10 
11 @interface ViewController ()
12 
13 @end
14 
15 @implementation ViewController
16 
17 - (void)viewDidLoad {
18     [super viewDidLoad];
19     // Do any additional setup after loading the view, typically from a nib.
20     
21     
22     _tableView = [[UITableView alloc]initWithFrame:self.view.bounds style:UITableViewStyleGrouped];
23     
24     _tableView.delegate = self;
25     
26     _tableView.dataSource = self;
27     
28     [self.view addSubview:_tableView];
29     
30     _arrayData = [[NSMutableArray alloc]init];
31     
32     for(int i='A';i<'Z';i++)
33     {
34         NSMutableArray* arraySmall = [[NSMutableArray alloc]init];
35         for(int j=1;j<6;j++)
36         {
37             NSString* str = [NSString stringWithFormat:@"%c%d",i,j];
38             
39             [arraySmall addObject:str];
40             
41         }
42         [_arrayData addObject:arraySmall];
43     }
44     
45     
46 }
47 
48 
49 
50 -(NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
51 {
52     NSInteger row = [[_arrayData objectAtIndex:section] count];
53     
54     return row;
55 }
56 
57 -(NSInteger) numberOfSectionsInTableView:(UITableView *)tableView
58 {
59     return _arrayData.count;
60 }
61 
62 
63 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
64 {
65     NSString* cellStr=@"cell";
66  
67     UITableViewCell* cell = [_tableView dequeueReusableCellWithIdentifier:cellStr];
68     if(cell == nil)
69     {
70         cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellStr];
71     }
72  
73     cell.textLabel.text = _arrayData[indexPath.section][indexPath.row];
74     
75     return cell;
76 }
77 
78 
79 - (void)didReceiveMemoryWarning {
80     [super didReceiveMemoryWarning];
81     // Dispose of any resources that can be recreated.
82 }
83 
84 
85 @end