UITableView iPhone Programming Tutorial
Hi Dears, Here i am not at going to use interface builder.I am going to implent complete application with coding, i hope it make you to become good programmer.
I am assuming that you know the implementation of UITableview with interface builder ,if not please have a look at the iPhone Programming Tutorial - Hello World with UITableView.
Now Please Observe the steps carefully
- create window-based application
- Have look at defaults files
- Modify the code
step-1 : Create window based application.
Xcode—>File—>Create New Project. Give the project name as ” UITBImplement ” .
Step-2 :Observe the default files generated by the xcode . Those files are.
Classes
UITBImplementAppDelegate.h
UITBImplementAppDelegate.m
Other Sources
UITBImplement_Prefix.pch
main.m
Resources
MainWindow.xib
info.plist
Frameworks
UIKit.framework
Foundation.framework
CoreGraphics.framework
Products
UITBImplement.app
So , these are our default files list.
Think here we are not going to use the interface builder ,so need not to touch mainwindow.xib file.
So we have only two files to change. i.e UITBImplementAppDelegate.h and UITBImplementAppDelegate.m
So we need TableView right?
UITBImplementAppDelegate.h file default code is
//
// UITBImplementAppDelegate.h
// UITBImplement
//
// Created by iappdevs on 13/12/08.
// Copyright iappdevs 2008. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface UITBImplementAppDelegate : NSObject <UIApplicationDelegate>
{
UIWindow *window;
}
@property (nonatomic, retain) IBOutlet UIWindow *window;
@end
modified code is
_________________________________________________________________________
//
// UITBImplementAppDelegate.h
// UITBImplement
//
// Created by iappdevs on 13/12/08.
// Copyright iappdevs 2008. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface UITBImplementAppDelegate : NSObject <UIApplicationDelegate,UITableViewDataSource,UITableViewDelegate>
{
UIWindow *window;
UITableView *tb;
}
@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) UITableView *tb;
@end
_________________________________________________________________________
TableView means it contains delegate and datasource right?
So we are delegating the table with our code so we need to extend them as
@interface UITBImplementAppDelegate : NSObject <UIApplicationDelegate,UITableViewDataSource,UITableViewDelegate>
one is for data souce, one is for delegating.
Ok till now we delcared the table view in appdelagate.m , now we have to implement the code about the table view in the appdelegate.m
We are using <UITableViewDataSource> so we need to implement the required methods in our application
@protocol UITableViewDataSource<NSObject>
@required
- (NSInteger)tableView:(UITableView *)table numberOfRowsInSection:(NSInteger)section;
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;
Default UITBImplementAppDelegate.m is
//
// UITBImplementAppDelegate.m
// UITBImplement
//
// Created by srinivas gourishetty on 13/12/08.
// Copyright iappdevs 2008. All rights reserved.
//
#import “UITBImplementAppDelegate.h”
@implementation UITBImplementAppDelegate
@synthesize window;
- (void)applicationDidFinishLaunching:(UIApplication *)application {
// Override point for customization after application launch
[window makeKeyAndVisible];
}
- (void)dealloc {
[window release];
[super dealloc];
}
@end
Modified code is
_________________________________________________________________________
//
// UITBImplementAppDelegate.m
// UITBImplement
//
// Created by srinivas gourishetty on 13/12/08.
// Copyright iappdevs 2008. All rights reserved.
//
#import “UITBImplementAppDelegate.h”
@implementation UITBImplementAppDelegate
@synthesize window,tb;
- (void)applicationDidFinishLaunching:(UIApplication *)application {
tb = [[UITableView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame] style:UITableViewStyleGrouped];
tb.delegate = self;//Becoz We are delegating the TableView , So it is self
tb.dataSource = self;//We only providing data fot tableview so it also self
[window addSubview:tb];//Finally the table view was completed then add this table to present window
[window makeKeyAndVisible];
}
- (NSInteger)tableView:(UITableView *)table numberOfRowsInSection:(NSInteger)section
{
return 8;//you can retun ant number;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{//Row means One cell here.
static NSString *MyIdentifier = @”MyIdentifier”;
UITableViewCell *cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:MyIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:MyIdentifier] autorelease];
}
cell.text = @”My Start Here….”;
return cell;
}
- (void)dealloc {
[tb release];
[window release];
[super dealloc];
}
@end
_________________________________________________________________________
Your out put is 
Please let me know if any thing was wrong. and i am not a good writer try to understand and steps was very easy and source code