UI3_UITableView

//

//  AppDelegate.m

//  UI3_UITableView

//

//  Created by zhangxueming on 15/7/13.

//  Copyright (c) 2015年 zhangxueming. All rights reserved.

//



#import "AppDelegate.h"

#import "ViewController.h"



@interface AppDelegate ()



@end



@implementation AppDelegate





- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    // Override point for customization after application launch.

    ViewController *root = [[ViewController alloc] init];

    UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:root];

    self.window.rootViewController = nav;

    self.window.backgroundColor = [UIColor whiteColor];

    [self.window makeKeyAndVisible];

    

    return YES;

}









//

//  ViewController.h

//  UI3_UITableView

//

//  Created by zhangxueming on 15/7/13.

//  Copyright (c) 2015年 zhangxueming. All rights reserved.

//



#import <UIKit/UIKit.h>



@interface ViewController : UIViewController <UITableViewDataSource,UITableViewDelegate>







@end

 

//

//  ViewController.m

//  UI3_UITableView

//

//  Created by zhangxueming on 15/7/13.

//  Copyright (c) 2015年 zhangxueming. All rights reserved.

//



#import "ViewController.h"



@interface ViewController ()

{

    UITableView *_tableView;

    NSMutableArray *_dataList;

}



@end



@implementation ViewController



- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

    //UITableView继承UIScrollView

    //UITableViewStyleGrouped 分组

    //UITableViewStylePlain 无风格

    _tableView = [[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewStylePlain];

    //tableView 模式横向不能滚动,只能竖向滚动,contentSize自动计算

    _tableView.backgroundColor = [UIColor cyanColor];

    [self.view addSubview:_tableView];

    

    //创建数据源

    _dataList = [NSMutableArray array];

    for (int i='A'; i<='Z'; i++) {

        NSMutableArray *nameArray = [NSMutableArray array];

        NSInteger count = arc4random()%10+1;

        for (int j=0; j<count; j++) {

            NSString *name = [NSString stringWithFormat:@"%c%d-name", (char)i, j];

            [nameArray addObject:name];

        }

        [_dataList addObject:nameArray];

    }

    self.automaticallyAdjustsScrollViewInsets = YES;

    

    _tableView.dataSource = self;

    _tableView.delegate = self;

    

}



#pragma mark ---UITableViewDataSource---



//返回每个分区中的显示的行数

//有多少个分区, 该方法被调用多少次

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

    return [[_dataList objectAtIndex:section] count];

}



//重用机制



- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

    //设定cell的重用标识符

    static NSString *cellID = @"cell";

    //先从表单元格重用队列中取出重用标识符的对象,如果为空,则创建表单元格对象

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];

    if (!cell) {

        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellID];

    }

    

    NSArray *nameArray = [_dataList objectAtIndex:indexPath.section];

    NSString *name = [nameArray objectAtIndex:indexPath.row];

    cell.textLabel.text  = name;

    cell.detailTextLabel.text = @"副标题test";

    //设置选中状态的风格

    cell.selectionStyle = UITableViewCellSelectionStyleGray;

    //设置右侧指示风格

    //详情风格

    cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;

    //设置左侧图片

    cell.imageView.image = [UIImage imageNamed:@"friend_weixin@2x"];

    return cell;

}



//返回分区的个数



- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

    return [_dataList count];

}



//设置分区的头标题

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section

{

    return [NSString stringWithFormat:@"第%c行",(char)(section+'A')];

}



//返回表单元格的高度,默认是44

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath

{

    return 60;

}



//选中表单元格的时候调用该方法

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

    NSLog(@"该表单元格被选中 section = %li row = %li", indexPath.section, indexPath.row);

    //设置表单元格为非选中状态,

    //[tableView deselectRowAtIndexPath:indexPath animated:YES];

}

//表单元格被取消时调用

- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath

{

    NSLog(@"该表单元格被取消 section = %li row = %li", indexPath.section, indexPath.row);

}



- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}



@end