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);
}
@end
