UITableView

AppDelegate.h

#import <UIKit/UIKit.h>@interface AppDelegate : UIResponder <UIApplicationDelegate>@property (strong, nonatomic) UIWindow *window;@end

AppDelegate.m

#import "AppDelegate.h"#import "RootViewController.h"@interface AppDelegate ()@end@implementation AppDelegate- (void)dealloc{    [_window release];    [super dealloc];}- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];    // Override point for customization after application launch.    self.window.backgroundColor = [UIColor whiteColor];    [self.window makeKeyAndVisible];    [_window release];    RootViewController *rootVC = [[RootViewController alloc] init];    UINavigationController *naVC = [[UINavigationController alloc] initWithRootViewController:rootVC];    self.window.rootViewController = naVC;    [rootVC release];    [naVC release];    return YES;}

RootViewController.h

#import <UIKit/UIKit.h>@interface RootViewController : UIViewController@end

RootViewController.m

#import "RootViewController.h"#define WIDTH self.view.frame.size.width#define HEIGHT self.view.frame.size.height@interface RootViewController ()<UITableViewDataSource, UITableViewDelegate>@property(nonatomic, retain)NSMutableArray *arr;@end@implementation RootViewController- (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" , @"花荣",@"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 whiteColor];    //  当页面只有一个tableView能滚动的视图的时候, 导航栏会自动把坐标系的起点放到(0, 64)的位置, 既能保留半透明效果, 也方便视图的布局    self.automaticallyAdjustsScrollViewInsets = NO;    self.navigationController.navigationBar.translucent = NO;    //  创建一个UITableView    //  通过UIView四步创建    UITableView *tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, WIDTH, HEIGHT) style:UITableViewStylePlain];    [self.view addSubview:tableView];    [tableView release];    tableView.backgroundColor = [UIColor yellowColor];    //  行高 default 44    tableView.rowHeight = 80;    //  签订代理人, dataSource    tableView.dataSource = self;    //  设置代理人    tableView.delegate = self;}- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {    UIView *headerView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, WIDTH, 24)] autorelease];    headerView.backgroundColor = [UIColor redColor];    UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];    button.frame = CGRectMake(300, 0, 50, 24);    [button setTitle:@"更多" forState:UIControlStateNormal];    [headerView addSubview:button];    return headerView;}#pragma mark    返回行高- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {    if (indexPath.row % 2 == 0) {        return 100;    } else {        return 150;    }}#pragma mark    设置分区标题高度- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {    return 50;}#pragma mark    tableView的点击方法- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {//    NSLog(@"我被点击了");    NSLog(@"行: %ld", indexPath.row);    NSLog(@"分区: %ld", indexPath.section);    NSLog(@"姓名: %@", self.arr[indexPath.row]);    UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];    NSLog(@"cell.textLabel.text: %@", cell.textLabel.text);}#pragma mark    tableView上的索引- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {    return @[@"a", @"2", @"3"];}#pragma mark    指定当前的分区个数- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {    return 3;}#pragma mark    指定每个分区的标题- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {    if (section == 0) {        return @"潘金莲";    } else if(section == 1) {        return @"阎婆惜";    } else {        return @"hehe";    }}#pragma mark    只要操作tableView就会触发这个协议方法, 完成对cell的创建和赋值的作用, 并且用重用的方式完成cell的创建和使用- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {    //  创建UITableViewCell    //  1. 指定一个重用标志的字符串    static NSString *reuse = @"reuse";    //  2. tableView根据指定的重用标志, 在重用池里寻找有没有闲置的cell    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:reuse];    //  3. 如果没有闲置的cell, 需要创建一个cell    if (!cell) {        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:reuse] autorelease];        NSLog(@"我被创建了");    }    //  cell创建好之后对cell上的属性进行赋值    cell.textLabel.text = self.arr[indexPath.row];    cell.detailTextLabel.text = @"222";    cell.imageView.image = [UIImage imageNamed:@"5.jpg"];    NSLog(@"%ld", indexPath.row);    return cell;}#pragma mark    这个是dataSource实现的第一个协议方法, 放回每个分区有多少行, 分区默认是1个- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {    //  数组元素个数跟行数进行关联//    return self.arr.count;    if (section % 2 == 0) {                return self.arr.count;            } else {                return 10;            }}