mainviewcontroller.m

iphone开发

/*

File: MainViewController.m
Abstract: The application's main view controller (front page).

Version: 1.7

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*/

#import "MainViewController.h"

#import "ButtonsViewController.h"
#import "ControlsViewController.h"
#import "TextFieldController.h"
#import "SearchBarController.h"
#import "TextViewController.h"
#import "SegmentViewController.h"
#import "ToolbarViewController.h"
#import "PickerViewController.h"
#import "ImagesViewController.h"
#import "WebViewController.h"
#import "AlertsViewController.h"
#import "TransitionViewController.h"

#import "Constants.h"

static NSString *kCellIdentifier = @"MyIdentifier";

@implementation MainViewController

@synthesize myTableView;

- (void)awakeFromNib
{	
	// construct the array of page descriptions we will use (each desc is a dictionary)
	//
	menuList = [[NSMutableArray alloc] init];
	
	// for showing various UIButtons:
	ButtonsViewController *buttonsViewController = [[ButtonsViewController alloc] init];
	[menuList addObject:[NSDictionary dictionaryWithObjectsAndKeys:
						 NSLocalizedString(@"ButtonsTitle", @""), @"title",
						 buttonsViewController, @"viewController",
						 nil]];
	[buttonsViewController release];
	
	// for showing various UIControls:
	ControlsViewController *controlsViewController = [[ControlsViewController alloc] init];
	[menuList addObject:[NSDictionary dictionaryWithObjectsAndKeys:
						 NSLocalizedString(@"ControlsTitle", @""), @"title",
						 controlsViewController, @"viewController",
						 nil]];
	[controlsViewController release];
	
	// for showing various UITextFields:
	TextFieldController *textFieldViewController = [[TextFieldController alloc] init];
	[menuList addObject:[NSDictionary dictionaryWithObjectsAndKeys:
						 NSLocalizedString(@"TextFieldTitle", @""), @"title",
						 textFieldViewController, @"viewController",
						 nil]];
	[textFieldViewController release];
	
	// for showing various UITextFields:
	SearchBarController *searchBarController = [[SearchBarController alloc] init];
	[menuList addObject:[NSDictionary dictionaryWithObjectsAndKeys:
						 NSLocalizedString(@"SearchBarTitle", @""), @"title",
						 searchBarController, @"viewController",
						 nil]];
	[searchBarController release];
	
	// for showing UITextView:
	TextViewController *textViewController = [[TextViewController alloc] init];
	[menuList addObject:[NSDictionary dictionaryWithObjectsAndKeys:
						 NSLocalizedString(@"TextViewTitle", @""), @"title",
						 textViewController, @"viewController",
						 nil]];
	[textViewController release];
	
	// for showing various UIPickers:
	PickerViewController *pickerViewController = [[PickerViewController alloc] init];
	[menuList addObject:[NSDictionary dictionaryWithObjectsAndKeys:
						 NSLocalizedString(@"PickerTitle", @""), @"title",
						 pickerViewController, @"viewController",
						 nil]];
	[pickerViewController release];
	
	// for showing UIImageView:
	ImagesViewController *imagesViewController = [[ImagesViewController alloc] init];
	[menuList addObject:[NSDictionary dictionaryWithObjectsAndKeys:
						 NSLocalizedString(@"ImagesTitle", @""), @"title",
						 imagesViewController, @"viewController",
						 nil]];
	[imagesViewController release];	
	
	// for showing UIWebView:
	WebViewController *webViewController = [[WebViewController alloc] init];
	[menuList addObject:[NSMutableDictionary dictionaryWithObjectsAndKeys:
						 NSLocalizedString(@"WebTitle", @""), @"title",
						 webViewController, @"viewController",
						 nil]];
	[webViewController release];	
	
	// for showing various UISegmentedControls:
	SegmentViewController *segmentViewController = [[SegmentViewController alloc] init];
	[menuList addObject:[NSMutableDictionary dictionaryWithObjectsAndKeys:
						 NSLocalizedString(@"SegmentTitle", @""), @"title",
						 segmentViewController, @"viewController",
						 nil]];
	[segmentViewController release];
	
	// for showing various UIBarButtonItem items inside a UIToolbar:
	ToolbarViewController *toolbarViewController = [[ToolbarViewController alloc] init];
	[menuList addObject:[NSMutableDictionary dictionaryWithObjectsAndKeys:
						 NSLocalizedString(@"ToolbarTitle", @""), @"title",
						 toolbarViewController, @"viewController",
						 nil]];
	[toolbarViewController release];
	
	// for showing various UIActionSheets and UIAlertViews:
	AlertsViewController *alertsViewController = [[AlertsViewController alloc] init];
	[menuList addObject:[NSMutableDictionary dictionaryWithObjectsAndKeys:
						 NSLocalizedString(@"AlertTitle", @""), @"title",
						 alertsViewController, @"viewController",
						 nil]];
	[alertsViewController release];
	
	// for showing how to a use flip animation transition between two UIViews:
	TransitionsViewController *transitionsViewController = [[TransitionsViewController alloc] init];
	[menuList addObject:[NSMutableDictionary dictionaryWithObjectsAndKeys:
						 NSLocalizedString(@"TransitionsTitle", @""), @"title",
						 transitionsViewController, @"viewController",
						 nil]];
	[transitionsViewController release];
	
	// create a custom navigation bar button and set it to always say "Back"
	UIBarButtonItem *temporaryBarButtonItem = [[UIBarButtonItem alloc] init];
	temporaryBarButtonItem.title = @"Back";
	self.navigationItem.backBarButtonItem = temporaryBarButtonItem;
	[temporaryBarButtonItem release];
}

- (void)dealloc
{
	[menuList release];
	[myTableView release];
	
	[super dealloc];
}


#pragma mark UIViewController delegate methods

- (void)viewWillAppear:(BOOL)animated
{
	// this UIViewController is about to re-appear, make sure we remove the current selection in our table view
	NSIndexPath *tableSelection = [myTableView indexPathForSelectedRow];
	[myTableView deselectRowAtIndexPath:tableSelection animated:NO];
}


#pragma mark UITableView delegate methods

// decide what kind of accesory view (to the far right) we will use
- (UITableViewCellAccessoryType)tableView:(UITableView *)tableView accessoryTypeForRowWithIndexPath:(NSIndexPath *)indexPath
{
	return UITableViewCellAccessoryDisclosureIndicator;
}

// tell our table how many sections or groups it will have (always 1 in our case)
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
	return 1;
}

// the table's selection has changed, switch to that item's UIViewController
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
	UIViewController *targetViewController = [[menuList objectAtIndex: indexPath.row] objectForKey:@"viewController"];
	[[self navigationController] pushViewController:targetViewController animated:YES];
}


#pragma mark UITableView datasource methods

// tell our table how many rows it will have, in our case the size of our menuList
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
	return [menuList count];
}

// tell our table what kind of cell to use and its title for the given row
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
	UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:kCellIdentifier];
	if (cell == nil)
	{
		cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:kCellIdentifier] autorelease];
	}
	
	cell.text = [[menuList objectAtIndex:indexPath.row] objectForKey:@"title"];
	
	return cell;
}

@end