IOS学习之路五（代码实现UITableView）

先展示一下运行结果：

 

 

 

 

代码实现：

1.先创建一个空项目：

2.创建一个Controller:(TableViewController)

 

在AppDelegate.h中声明属性：

 

//  AppDelegate.h
//  UITableViewDemo
//
//  Created by WildCat on 13-8-6.
//  Copyright (c) 2013年 wildcat. All rights reserved.
//

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

@property (readonly, strong, nonatomic) NSManagedObjectContext *managedObjectContext;
@property (readonly, strong, nonatomic) NSManagedObjectModel *managedObjectModel;
@property (readonly, strong, nonatomic) NSPersistentStoreCoordinator *persistentStoreCoordinator;

- (void)saveContext;
- (NSURL *)applicationDocumentsDirectory;

@end

 

在.m文件中实现：关键代码：

 

#import "AppDelegate.h"
#import "TableViewController.h"
@implementation AppDelegate
@synthesize tableViewController=_tableViewController;
@synthesize managedObjectContext = _managedObjectContext;
@synthesize managedObjectModel = _managedObjectModel;
@synthesize persistentStoreCoordinator = _persistentStoreCoordinator;

- (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];

    self.tableViewController=[[TableViewController alloc] initWithNibName:nil bundle:NULL];
    [self.window addSubview:self.tableViewController.view];




    return YES;
}

 

在TableViewController中声明：

 

 

#import <UIKit/UIKit.h>

@interface TableViewController : UIViewController<UITableViewDelegate,UITableViewDataSource>
@property (nonatomic, strong) UITableView *myTableView;
@end

 

 

在其.m文件中实现：

 

//
//  TableViewController.m
//  UITableViewDemo
//
//  Created by WildCat on 13-8-6.
//  Copyright (c) 2013年 wildcat. All rights reserved.
//

#import "TableViewController.h"

@interface TableViewController ()

@end

@implementation TableViewController
@synthesize myTableView;

#pragma  mark - 实现UITableViewDelegate的方法

//当cell被点击时调用该方法
- (void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    if ([tableView isEqual:self.myTableView]){
        NSLog(@"%@",
              [NSString stringWithFormat:@"Cell %ld in Section %ld is selected",
               (long)indexPath.row, (long)indexPath.section]); }
}



- (CGFloat) tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    CGFloat result = 20.0f;
    if ([tableView isEqual:self.myTableView]){
        result = 40.0f;
    }
    return result;
}
#pragma mark - 实现datasource的方法
//确定section的个数
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
    NSInteger result=0;
    if ([tableView isEqual:self.myTableView]) {
        result=3;
    }
    return result;


}
//每个section的行数
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    NSInteger result = 0;
    if ([tableView isEqual:self.myTableView]){
        switch (section){ case 0:{
            result = 3;
            break;
        } case 1:{
            result = 5; break;
        } case 2:{
            result = 8; break;
        } }
    }
    return result;
}

//设置每个静态的cell
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    UITableViewCell *result = nil;
    if ([tableView isEqual:self.myTableView]){
        static NSString *TableViewCellIdentifier = @"MyCells";
        result = [tableView dequeueReusableCellWithIdentifier:TableViewCellIdentifier];
        if (result == nil){
            result = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:TableViewCellIdentifier];
        }
        result.textLabel.text = [NSString stringWithFormat:@"Section %ld, Cell %ld", (long)indexPath.section,
                                 (long)indexPath.row];
       // result.backgroundColor=[UIColor greenColor];  //背景色

       result.detailTextLabel.text = @"详细内容";
        if (indexPath.section==0) {
            result.accessoryType = UITableViewCellAccessoryDisclosureIndicator;  //设置右边的样式

        }else if(indexPath.section==1){
             result.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;  //设置右边的样式
        }else{
            result.accessoryType = UITableViewCellAccessoryCheckmark;  //设置右边的样式
        }
        /*
         这两个附件的区别在于 disclosure indicator 不产生事件,而 detail disclosure 按钮在被点击时会向委托触发一个事件;也就是说,点击 cell 上的按键会 有不同效果。因此,detail disclosure 按钮允许用户在同一行上执行两个独立但相关的操 作。


         */

//        typedef enum {
//            UITableViewCellAccessoryNone,                   // don't show any accessory view
//            UITableViewCellAccessoryDisclosureIndicator,    // regular chevron. doesn't track
//            UITableViewCellAccessoryDetailDisclosureButton, // blue button w/ chevron. tracks
//            UITableViewCellAccessoryCheckmark               // checkmark. doesn't track
//        } UITableViewCellAccessoryType;

    }
    return result;

}
//实现DetailDisclosure被点击出发的方法
- (void) tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath{
    /* Do something when the accessory button is tapped */
    NSLog(@"Accessory button is tapped for cell at index path = %@", indexPath);
    UITableViewCell *ownerCell = [tableView cellForRowAtIndexPath:indexPath];
    NSLog(@"Cell Title = %@", ownerCell.textLabel.text);
}


#pragma mark - TableViewController 的方法
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor whiteColor];
    self.myTableView =
    [[UITableView alloc] initWithFrame:self.view.bounds
                                 style:UITableViewStyleGrouped];//另一种样式：UITableViewStyleGrouped
    self.myTableView.dataSource = self;
    self.myTableView.delegate = self;
    self.myTableView.autoresizingMask = UIViewAutoresizingFlexibleWidth |UIViewAutoresizingFlexibleHeight;

    [self.view addSubview:self.myTableView];


}

- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    self.myTableView = nil;
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}