iOS UI08_UITableView

(http://img.blog.csdn.net/20150808103801391)

//
//  MainViewController.m
//  UI08_UITableView
//
//  Created by dllo on 15/8/7.
//  Copyright (c) 2015年 zhozhicheng. All rights reserved.
//

#import "MainViewController.h"
#import "SecondViewController.h"

@interface MainViewController ()<UITableViewDataSource,UITableViewDelegate>
@property(nonatomic,retain)NSMutableArray *arr;
@end

@implementation MainViewController
-(void)dealloc
{
    [_arr release];
    [super dealloc];
}
-(instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self =[super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        self.arr = [NSMutableArray arrayWithObjects:@"宋江", @"卢俊义", @"吴用", @"公孙胜", @"关胜", @"林冲", @"秦明" ,@"呼延灼" , @"花容",@"柴进", @"李应", @"朱仝",@"鲁智深",@"武松",nil];
    }
    return self;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.view.backgroundColor=[UIColor yellowColor];
    self.navigationController.navigationBar.translucent=NO;
    self.navigationItem.title[email protected]"表视图";

    UITableView *tableView =[[UITableView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height-64) style:UITableViewStylePlain];
    tableView.backgroundColor=[UIColor cyanColor];
    [self.view addSubview:tableView];
    [tableView release];
    //设置行高
    tableView.rowHeight=100;
    //两套代理的方法
    tableView.dataSource=self;
    //第二套协议代理人
    tableView.delegate=self;

}
#pragma mark tableView第一个必须实现的协议方法,指定分区内有多少行
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    //让数组里的元素个数和行数保持相同
//    return self.arr.count;
    //奇数分区有五行,偶数分区有十行
    //先执行设置分区的方法,后执行每个分区有多少行
    if (section % 2 == 1) {
        return 5;
    }else{
        return 10;
    }

}
#pragma mark 第二个协议方法,主要用来显示数据
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    //创建相应个数的cell
    //static 特点 1.只初始化一次2.如果没有初始值,默认是0 3.直到程序结束,才会消失
    //当cell显示结束之后,会把cell统一放到重用池中,等需要cell显示了,先从重用池中找,看有没有闲置cell,如果有就用闲置的cell,如果没有在创建
    //cell的重用目的是为了节约成本,用有限的cell把所有数据都显示出来
    //给重用池设置一个重用的标志,根据这个标志找到对应的重用池
    //tableview通过重用标志在重用池中寻找cell,如果有闲置的cell,cell会保存一个有效地cell对象地址,如果没有,cell里则为nil,空
    static NSString *[email protected]"reuse";
    UITableViewCell *cell =[tableView dequeueReusableCellWithIdentifier:reuse];
    //如果没有cell,则进行cell的创建
    if (!cell) {
        cell =[[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:reuse] autorelease];
    }
    //对cell进行赋值
    //cell中有三个默认控件
    cell.textLabel.text=self.arr[indexPath.row];
    cell.detailTextLabel.text=[NSString stringWithFormat:@"%ld",indexPath.section];
    cell.imageView.image=[UIImage imageNamed:@"scratch.png"];
    //indexPath保存的行数,从0开始,
    NSLog(@"%ld",indexPath.row);
    return cell;
}
#pragma mark tableview里有多少个section
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 10;
}
//分区的头标题
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
    return @"水浒";
}
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView
{
    return self.arr;
}
//第二套协议
#pragma mark table的点击方法
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSLog(@"section:%ld,row:%ld",indexPath.section,indexPath.row);
    //打印点击的人名是什么
    NSLog(@"%@",self.arr[indexPath.row]);
    //点击之后跳到下一页
    SecondViewController *secVC=[[SecondViewController alloc] init];
    [self.navigationController pushViewController:secVC animated:YES];
    [secVC release];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end

//
//  SecondViewController.m
//  UI08_UITableView
//
//  Created by dllo on 15/8/7.
//  Copyright (c) 2015年 zhozhicheng. All rights reserved.
//

#import "SecondViewController.h"

@interface SecondViewController ()

@end

@implementation SecondViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.view.backgroundColor=[UIColor orangeColor];

}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end

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