7.1 导航控制器
7.2 创建第一级控制器
7.3 第一个二级控制器
7.4 第一个三级控制器
7.5 第二个二级表控制器
7.6 第三个二级表控制器
7.7 第四个二级表控制器
7.8 第五个二级表视图控制器
7.8 第六个二级表视图控制器
7.1 导航控制器
关于导航控制器和表视图
导航控制器和表视图密不可分。严格的说，要完成导航控制器的功能并不需要表视图。然而，在实际的应用程序中使用导航控制器时，几乎总是要实现至少一个表，并且通常多个表，因为导航控制器的强大之处在于它能够处理复杂的分层数据，在iPhone的小屏幕上，连续的使用表示分层数据最理想的方式。
7.2 创建第一级控制器
一级控制器RootViewController还是一个UITableViewController,它并不是我们说的导航控制器，我们在委托Delegate中定义了导航控制器UINavigationController，事实上UINavigationController才真正意义的根控制器。
RootViewController.h
#import <UIKit/UIKit.h>@interface RootViewController : UITableViewController {NSArray *controllers; }@property (nonatomic, retain) NSArray *controllers;@end
RootViewController.m
@implementation RootViewController@synthesize controllers;- (void)viewDidLoad {self.title = @"First Level";NSMutableArray *array = [[NSMutableArray alloc] init];//增加控制器// self.controllers = array;[array release];[super viewDidLoad]; }- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning]; }- (void)viewDidUnload { }- (void)dealloc {[super dealloc]; }
实现TableView数据源方法
#pragma mark Table view data source// Customize the number of sections in the table view. - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {return 1; }// Customize the number of rows in the table view. - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {return [controllers count]; }// Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {static NSString *CellIdentifier = @"Cell";UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];if (cell == nil) {cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];}NSInteger row = [indexPath row];SecondLevelViewController *controller = [controllers objectAtIndex:row];cell.textLabel.text = controller.title;cell.imageView.image = controller.rowImage;cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;return cell; }
cell.accessoryType属性设定表视图单元格扩展图标类型。单元格扩展图标类型：
UITableViewCellAccessoryNone，没有扩展图标；
UITableViewCellAccessoryDisclosureIndicator，扩展指示器，触摸该图标将切换到下一级表视图，图标为
UITableViewCellAccessoryDetailDisclosureButton，细节展示按钮，触摸该行将显示当前行的更多详细信息视图，图标为
UITableViewCellAccessoryCheckmark，选中标志，当选中某一行时候标志该行，图标为
实现TableView委托方法
#pragma mark - #pragma mark Table view delegate- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {NSInteger row = [indexPath row];SecondLevelViewController *nextController = [self.controllers objectAtIndex:row];[self.navigationController pushViewController:nextController animated:YES]; }
二级表视图控制器
由于二级控制器也是表视图控制器，而且我们需要在为每个页面指定一个图片，所以我们定义了一个父类SecondLevelViewController
SecondLevelViewController
@interface SecondLevelViewController : UITableViewController {UIImage *rowImage; } @property (nonatomic, retain) UIImage *rowImage;@end
#import "SecondLevelViewController.h"@implementation SecondLevelViewController@synthesize rowImage;@end
7.3 第一个二级控制器
DisclosureButtonController.h
#import <Foundation/Foundation.h> #import "SecondLevelViewController.h" #import "DisclosureDetailController.h"@interface DisclosureButtonController : SecondLevelViewController {NSArray *listData;DisclosureDetailController *childController; } @property (nonatomic,retain) NSArray *listData; @property (nonatomic, retain) DisclosureDetailController *childController;@end
DisclosureButtonController.m
#import "DisclosureButtonController.h" #import "SecondLevelViewController.h"@implementation DisclosureButtonController@synthesize listData; @synthesize childController;- (void)viewDidLoad {NSArray *array = [[NSArray alloc] initWithObjects:@"Toy Story",@"A Bug's Life", @"Toy Story 2", @"Monsters, Inc.", @"Finding Nemo", @"The Incredibles", @"Cars", @"Ratatouille", @"WALL-E", @"Up", @"Toy Story 3",@"Cars 2", @"The Bear and the Bow", @"Newt", nil];self.listData = array;[array release];[super viewDidLoad]; }- (void)viewDidUnload {self.listData = nil;self.rowImage = nil; }- (void)dealloc {[listData release];[rowImage release];[super dealloc]; }
实现TableView数据源方法
#pragma mark - #pragma mark Table view data source// Customize the number of sections in the table view. - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {return 1; }// Customize the number of rows in the table view. - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {return [listData count]; }
// Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {static NSString *CellIdentifier = @"Cell";UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];if (cell == nil) {cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];}NSInteger row = [indexPath row];NSString *title = [listData objectAtIndex:row];cell.textLabel.text = title;//cell.imageView.image = controller.rowImage;cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;return cell; }
实现TableView委托方法
#pragma mark - #pragma mark Table view delegate- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {if (childController == nil) {childController = [[DisclosureDetailController alloc] initWithNibName:@"DisclosureDetailController" bundle:nil];}//childController.title = @"DisclosureDetail Button Pressed";NSInteger row = [indexPath row];NSString *selectedMessage = [listData objectAtIndex:row];NSString *message = [[NSString alloc] initWithFormat:@"你选择了 %@ 按钮。", selectedMessage];childController.message = message;childController.title = selectedMessage;[message release];[self.navigationController pushViewController:childController animated:YES]; }
上面的委托方法，是用户选中单元格后触发的方法。
[self.navigationController pushViewController:childController animated:YES];
是将详细视图控制器放置到导航控制器栈中，并以动画效果显示详细视图。
RootViewController中 viewDidLoad方法
//增加细节扩展按钮控制器DisclosureButtonController *disclosureButtonController = [[DisclosureButtonController alloc] initWithStyle:UITableViewStylePlain];disclosureButtonController.title = @"Disclosure Buttons";disclosureButtonController.rowImage = [UIImage imageNamed:@"disclosureButtonControllerIcon.png"];[array addObject:disclosureButtonController];[disclosureButtonController release];
7.4 第一个三级控制器
DisclosureDetailController.h
@interface DisclosureDetailController : UIViewController {UILabel *label;NSString *message; } @property (nonatomic, retain) IBOutlet UILabel *label; @property (nonatomic, retain) NSString *message;@end
message从上一个屏幕传递过来的消息 label显示消息的控件。
m文件中的初始化方法
@implementation DisclosureDetailController@synthesize message; @synthesize label;// Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewWillAppear:(BOOL)animated {label.text = message;[super viewWillAppear:animated]; }
不要使用viewDidLoad 方法，而是使用viewWillAppear:animated:方法，该方法是在屏幕出现时候调用。
m文件中释放方法
- (void)viewDidUnload {[super viewDidUnload];self.message = nil;self.label = nil; }- (void)dealloc {[message release];[label release];[super dealloc]; }
7.5 第二个二级表控制器
CheckListController.h
#import <UIKit/UIKit.h> #import "SecondLevelViewController.h"@interface CheckListController : SecondLevelViewController {NSArray *listData;NSIndexPath *lastIndexPath; }@property (nonatomic, retain) NSArray *listData; @property (nonatomic, retain) NSIndexPath *lastIndexPath;@end
CheckListController.m
- (void)viewDidLoad {NSArray *array = [[NSArray alloc] initWithObjects:@"Who Hash",@"Bubba Gump Shrimp Étouffée", @"Who Pudding", @"Scooby Snacks",@"Everlasting Gobstopper", @"Green Eggs and Ham", @"Soylent Green",@"Hard Tack", @"Lembas Bread", @"Roast Beast", @"Blancmange", nil];self.listData = array;[array release]; }- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning]; }- (void)viewDidUnload {self.listData = nil;self.lastIndexPath = nil; }- (void)dealloc {[listData release];[lastIndexPath release];[super dealloc]; }
实现TableView数据源方法
#pragma mark Table view methods- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {return 1; }// Customize the number of rows in the table view. - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {return [listData count]; }
// Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {static NSString *CellIdentifier = @"Cell";UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];if (cell == nil) {cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];}NSInteger row = [indexPath row]; // NSInteger oldRow = [lastIndexPath row]; cell.textLabel.text = [listData objectAtIndex:row]; // cell.accessoryType = (row == oldRow && lastIndexPath != nil) ? // UITableViewCellAccessoryCheckmark : UITableViewCellAccessoryNone;return cell; }
实现TableView委托方法
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {int newRow = [indexPath row];int oldRow = (lastIndexPath != nil) ? [lastIndexPath row] : -1;if (newRow != oldRow) {UITableViewCell *newCell = [tableView cellForRowAtIndexPath:indexPath];newCell.accessoryType = UITableViewCellAccessoryCheckmark;UITableViewCell *oldCell = [tableView cellForRowAtIndexPath:lastIndexPath];oldCell.accessoryType = UITableViewCellAccessoryNone;lastIndexPath = indexPath;}}
int oldRow = (lastIndexPath != nil) ? [lastIndexPath row] : -1;
获得上次选择的单元格行，如果lastIndexPath为nil这设置为-1
newCell.accessoryType = UITableViewCellAccessoryCheckmark;
设置新单元格为UITableViewCellAccessoryCheckmark oldCell.accessoryType = UITableViewCellAccessoryNone;
设置旧单元格为UITableViewCellAccessoryNone
RootViewController中 viewDidLoad方法
//增加check控制器CheckListController *checkListController = [[CheckListController alloc] initWithStyle:UITableViewStylePlain];checkListController.title = @"Check One";checkListController.rowImage = [UIImage imageNamed:@"checkmarkControllerIcon.png"];[array addObject:checkListController];[checkListController release];
7.6 第三个二级表控制器
RowControlsController.h
#import <UIKit/UIKit.h> #import "SecondLevelViewController.h"@interface RowControlsController : SecondLevelViewController {NSArray *listData; }@property (nonatomic, retain) NSArray *listData; -(IBAction)buttonTapped:(id)sender;@end
RowControlsController.m
@implementation RowControlsController@synthesize listData;-(IBAction)buttonTapped:(id)sender {UIButton *senderButton = (UIButton *)sender;UITableViewCell *buttonCell = (UITableViewCell *)[senderButton superview];NSInteger buttonRow = [[self.tableView indexPathForCell:buttonCell] row];NSString *rowTitle = [listData objectAtIndex:buttonRow];UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"点击Button" message:[NSString stringWithFormat:@"你点击的Button是 %@",rowTitle]delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil];[alert show];[alert release]; }- (void)viewDidLoad {NSArray *array = [[NSArray alloc] initWithObjects:@"R2-D2",@"C3PO", @"Tik-Tok", @"Robby", @"Rosie", @"Uniblab",@"Bender", @"Marvin", @"Lt. Commander Data", @"Evil Brother Lore", @"Optimus Prime", @"Tobor", @"HAL", @"Orgasmatron", nil];self.listData = array;[array release]; }- (void)viewDidUnload {self.listData = nil; }- (void)dealloc {[listData release];[super dealloc]; }
实现TableView数据源方法
#pragma mark Table view methods- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {return 1; }// Customize the number of rows in the table view. - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {return [listData count]; }
// Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {static NSString *CellIdentifier = @"Cell";UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];if (cell == nil) {cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];UIImage *buttonUpImage = [UIImage imageNamed:@"button_up.png"];UIImage *buttonDownImage = [UIImage imageNamed:@"button_down.png"];UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];button.frame = CGRectMake(0.0f, 0.0f, buttonUpImage.size.width, buttonUpImage.size.height);[button setBackgroundImage:buttonUpImage forState:UIControlStateNormal];[button setBackgroundImage:buttonDownImage forState:UIControlStateHighlighted];[button setTitle:@"Tap" forState:UIControlStateNormal];[button addTarget:self action:@selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];cell.accessoryView = button;}NSInteger row = [indexPath row];NSString *rowTitle = [listData objectAtIndex:row];cell.textLabel.text = rowTitle;return cell; }
由于我们没有nib文件，所以按钮要通过代码自己写按钮， 如下：
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
指定按钮的边框大小：
button.frame = CGRectMake(0.0f, 0.0f, buttonUpImage.size.width, buttonUpImage.size.height);
设定按钮正常状态时候背景图片
[button setBackgroundImage:buttonUpImage forState:UIControlStateNormal];
设定按钮高亮状态时候背景图片
[button setBackgroundImage:buttonDownImage forState:UIControlStateHighlighted];
button setTitle:@"Tap" forState:UIControlStateNormal 设置按钮正常状态时候的title内容。
[button addTarget:self action:@selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];
由于没有nib文件按钮事件不能通过IB设计工具添加，要通过代码实现与按钮事件的处理。
cell.accessoryView = button;
把按钮对象赋给单元格的accessoryView（扩展视图）。
实现TableView委托方法
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {NSInteger buttonRow = [indexPath row];NSString *rowTitle = [listData objectAtIndex:buttonRow];UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"点击Row" message:[NSString stringWithFormat:@"你点击的Row是 %@",rowTitle]delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil];[alert show];[alert release];}
RowControlsController.m
-(IBAction)buttonTapped:(id)sender {UIButton *senderButton = (UIButton *)sender;UITableViewCell *buttonCell = (UITableViewCell *)[senderButton superview];NSInteger buttonRow = [[self.tableView indexPathForCell:buttonCell] row];NSString *rowTitle = [listData objectAtIndex:buttonRow];UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"点击Button" message:[NSString stringWithFormat:@"你点击的Button是 %@",rowTitle]delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil];[alert show];[alert release]; }- (void)viewDidLoad {NSArray *array = [[NSArray alloc] initWithObjects:@"R2-D2",@"C3PO", @"Tik-Tok", @"Robby", @"Rosie", @"Uniblab",@"Bender", @"Marvin", @"Lt. Commander Data", @"Evil Brother Lore", @"Optimus Prime", @"Tobor", @"HAL", @"Orgasmatron", nil];self.listData = array;[array release]; }
buttonTapped:方法，是点击单元格中的按钮触发事件。
UITableViewCell *buttonCell = (UITableViewCell *)[senderButton superview];
其中superview获得父控件，即表视图单元格。
NSInteger buttonRow = [[self.tableView indexPathForCell:buttonCell] row];
其中获得选择的单元格中的按钮所在的单元格行数。
RootViewController中 viewDidLoad方法
//增加Row控制器RowControlsController *rowControlsController = [[RowControlsController alloc] initWithStyle:UITableViewStylePlain];rowControlsController.title = @"Row Controls";rowControlsController.rowImage = [UIImage imageNamed:@"rowControlsIcon.png"];[array addObject:rowControlsController];[rowControlsController release];
7.7 第四个二级表控制器
MoveMeController.h
#import <UIKit/UIKit.h> #import "SecondLevelViewController.h"@interface MoveMeController : SecondLevelViewController {NSMutableArray *listData; } @property (nonatomic, retain) NSMutableArray *listData; -(IBAction)toggleMove;@end
MoveMeController.m
@implementation MoveMeController@synthesize listData;-(IBAction)toggleMove {[self.tableView setEditing:!self.tableView.editing animated:YES];if (self.tableView.editing) {[self.navigationItem.rightBarButtonItem setTitle:@"Done"];} else {[self.navigationItem.rightBarButtonItem setTitle:@"Move"];}} #pragma mark - #pragma mark Memory management- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning]; }- (void)viewDidUnload {self.listData = nil; }- (void)dealloc {[listData release];[super dealloc]; }
toggleMove方法，是点击导航控制器右边按钮时候触发事件，如果表单元格处于编辑状态时候，设为不可编辑，反之可以编辑单元格。
MoveMeController.m
#pragma mark - #pragma mark View lifecycle- (void)viewDidLoad {if (listData == nil) {NSMutableArray *array = [[NSMutableArray alloc] initWithObjects:@"Eeny", @"Meeny", @"Miney", @"Moe", @"Catch", @"A", @"Tiger", @"By", @"The", @"Toe", nil];self.listData = array;[array release]; }UIBarButtonItem *moveButton = [[UIBarButtonItem alloc] initWithTitle:@"Move" style:UIBarButtonItemStyleBordered target:self action:@selector(toggleMove)];self.navigationItem.rightBarButtonItem = moveButton;[moveButton release];[super viewDidLoad]; }
实现TableView数据源方法
#pragma mark - #pragma mark Table view data source- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {// Return the number of sections.return 1; }- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {// Return the number of rows in the section.return [listData count]; }
// Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {static NSString *CellIdentifier = @"Cell";UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];if (cell == nil) {cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];//cell.showsReorderControl = YES; }NSInteger row = [indexPath row];cell.textLabel.text = [listData objectAtIndex:row];return cell; }
// Override to support rearranging the table view. - (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {NSInteger fromRow = [fromIndexPath row];NSInteger toRow = [toIndexPath row];id object = [listData objectAtIndex:fromRow];//[[listData objectAtIndex:fromRow] retain]; [listData removeObjectAtIndex:fromRow];[listData insertObject:object atIndex:toRow];//[object release]; }
// Override to support conditional rearranging of the table view. - (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {// Return NO if you do not want the item to be re-orderable.return YES; }
控制单元格行是否可以移动，本例中我们是可以移动所有行。
实现TableView委托方法
#pragma mark - #pragma mark Table view delegate- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath {return UITableViewCellEditingStyleNone; }
我们希望能够对行重新排序，不过不希望用户能够删除或插入行，因此，我们实现了上面的委托方法，通过这个方法，表视图可以询问指定的行是否可以被删除，或是否可以将新行插入到指定的位置。通过为每一行返回
UITableViewCellEditingStyleNone，表示我们不支持插入或删除任何行。
RootViewController中 viewDidLoad方法
//增加Move控制器MoveMeController *moveMeController = [[MoveMeController alloc] initWithStyle:UITableViewStylePlain];moveMeController.title = @"Move Me";moveMeController.rowImage = [UIImage imageNamed:@"moveMeIcon.png"];[array addObject:moveMeController];[moveMeController release];
7.8 第五个二级表视图控制器
DeleteMeController.h
#import <UIKit/UIKit.h> #import "SecondLevelViewController.h"@interface DeleteMeController : SecondLevelViewController {NSMutableArray *listData; }@property (nonatomic, retain) NSMutableArray *listData; -(IBAction)toggleMove;@end
DeleteMeController.m
@implementation DeleteMeController@synthesize listData;-(IBAction)toggleMove {[self.tableView setEditing:!self.tableView.editing animated:YES];if (self.tableView.editing) {[self.navigationItem.rightBarButtonItem setTitle:@"Done"];} else {[self.navigationItem.rightBarButtonItem setTitle:@"Move"];}}- (void)dealloc {[listData release];[super dealloc]; }
toggleMove方法，是点击导航控制器右边按钮时候触发事件，如果表单元格处于编辑状态时候，设为不可编辑，反之可以编辑单元格。
DeleteMeController.m
- (void)viewDidLoad {if (listData == nil) {NSString *path = [[NSBundle mainBundle] pathForResource:@"computers" ofType:@"plist"];NSMutableArray *array = [[NSMutableArray alloc] initWithContentsOfFile:path];self.listData = array;[array release];}UIBarButtonItem *editButton = [[UIBarButtonItem alloc] initWithTitle:@"Delete" style:UIBarButtonItemStyleBordered target:self action:@selector(toggleMove)];self.navigationItem.rightBarButtonItem = editButton;[editButton release]; }
实现TableView数据源方法
#pragma mark - #pragma mark Table view data source- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {// Return the number of sections.return 1; }- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {// Return the number of rows in the section.return [listData count]; }
// Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {static NSString *CellIdentifier = @"Cell";UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];if (cell == nil) {cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];}NSInteger row = [indexPath row];cell.textLabel.text = [listData objectAtIndex:row];return cell; }
// Override to support editing the table view. - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {if (editingStyle == UITableViewCellEditingStyleDelete) {NSInteger row = [indexPath row];[self.listData removeObjectAtIndex:row];// Delete the row from the data source [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:YES];}}
-(void)tableView:(UITableView *)tableView commitEditingStyle:
(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
该委托方法是实现删除和插入功能。
RootViewController中 viewDidLoad方法
//增加Delete控制器DeleteMeController *deleteMeController = [[DeleteMeController alloc] initWithStyle:UITableViewStylePlain];deleteMeController.title = @"Delete Me";deleteMeController.rowImage = [UIImage imageNamed:@"deleteMeIcon.png"];[array addObject:deleteMeController];[deleteMeController release];
7.9 第六个二级表视图控制器
TeamsViewController.h
#import <UIKit/UIKit.h> #import "SecondLevelViewController.h"@interface TeamsViewController : SecondLevelViewController {NSArray *listData; }@property (nonatomic, retain) NSArray *listData;@end
TeamsViewController.m
#import "TeamsViewController.h" #import "TeamsViewController.h" #import "TeamsDetailController.h"@implementation TeamsViewController @synthesize listData; - (void)viewDidLoad {NSString *path = [[NSBundle mainBundle] pathForResource:@"teamdictionary" ofType:@"plist"];NSDictionary *dict = [[NSDictionary alloc] initWithContentsOfFile:path];self.listData = [dict allKeys];[dict release]; } - (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning]; } - (void)viewDidUnload {self.listData = nil; } - (void)dealloc {[listData release];[super dealloc]; }
实现TableView数据源方法
#pragma mark Table view methods- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {return 1; }// Customize the number of rows in the table view. - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {return [listData count]; }
实现TableView数据源方法
// Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {static NSString *CellIdentifier = @"Cell";UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];if (cell == nil) {cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];}NSInteger row = [indexPath row];NSString *title = [listData objectAtIndex:row];cell.textLabel.text = title;return cell; } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {NSInteger row = [indexPath row];NSString *groupName = [listData objectAtIndex:row];NSString *path = [[NSBundle mainBundle] pathForResource:@"teamdictionary" ofType:@"plist"];NSDictionary *dict = [[NSDictionary alloc] initWithContentsOfFile:path];TeamsDetailController *detailController = [[TeamsDetailController alloc]initWithStyle:UITableViewStyleGrouped];detailController.listData = [dict objectForKey:groupName]; [dict release];//[array release];// Navigation logic may go here. Create and push another view controller. [self.navigationController pushViewController:detailController animated:YES];[detailController release]; }
可编辑表视图控制器
TeamsDetailController.h
#import <UIKit/UIKit.h> #define TEAM1 1 #define TEAM2 2 #define TEAM3 3 #define TEAM4 4 #define LABLE_TAG 45678@interface TeamsDetailController : UITableViewController <UITextFieldDelegate> {NSArray *listData;NSMutableArray *teamsData;NSArray *fieldLables; }@property (nonatomic, retain) NSArray *listData; @property (nonatomic, retain) NSArray *fieldLables; @property (nonatomic, retain) NSMutableArray *teamsData;-(IBAction)cancel:(id)sender; -(IBAction)save:(id)sender; -(IBAction)textFieldDone:(id)sender;@end
TeamsDetailController.m
#import "TeamsDetailController.h"@implementation TeamsDetailController@synthesize listData; @synthesize fieldLables; @synthesize teamsData;-(IBAction)cancel:(id)sender {[self.navigationController popViewControllerAnimated:YES]; }-(IBAction)save:(id)sender {for (UIView *oneView in self.tableView.subviews) {if ([oneView isMemberOfClass:[UITableViewCell class]]) {UITableViewCell *cell = (UITableViewCell *)oneView;for (UIView *twoView in cell.contentView.subviews) {if ([twoView isMemberOfClass:[UITextField class]]) {UITextField *textField = (UITextField *)twoView;NSLog(@"行 %i -- value %@", textField.tag ,textField.text);}}}}[self.navigationController popViewControllerAnimated:YES];}
-(IBAction)textFieldDone:(id)sender {[sender resignFirstResponder]; }- (void)viewDidUnload {self.listData = nil;self.teamsData = nil;self.fieldLables = nil;self.listData = nil; }- (void)dealloc {[listData release];[teamsData release];[fieldLables release];[super dealloc]; }
- (void)viewDidLoad {teamsData = [[NSMutableArray alloc] init];for (id name in listData) {[teamsData addObject:name];}NSArray *array = [[NSArray alloc] initWithObjects:@"第一队：",@"第二队：",@"第三队：",@"第四队：", nil];self.fieldLables = array;[array release];UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithTitle:@"Cancel" style:UIBarButtonItemStyleBordered target:self action:@selector(cancel:)];self.navigationItem.leftBarButtonItem = cancelButton;[cancelButton release];UIBarButtonItem *saveButton = [[UIBarButtonItem alloc] initWithTitle:@"Save" style:UIBarButtonItemStyleBordered target:self action:@selector(save:)];self.navigationItem.rightBarButtonItem = saveButton;[saveButton release]; }- (void)didReceiveMemoryWarning {// Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning];// Release any cached data, images, etc that aren't in use. }
实现TableView数据源方法
#pragma mark Table view methods- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {return 1; }// Customize the number of rows in the table view. - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {return [teamsData count]; }
// Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {static NSString *CellIdentifier = @"Cell";UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];if (cell == nil) {cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 75, 25)];label.textAlignment = UITextAlignmentRight;label.tag = LABLE_TAG;label.font = [UIFont boldSystemFontOfSize:14];[cell.contentView addSubview:label];[label release];UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(90, 12, 200, 25)];textField.clearsOnBeginEditing = NO;[textField setDelegate:self];textField.returnKeyType = UIReturnKeyDone;[textField addTarget:self action:@selector(textFieldDone:) forControlEvents:UIControlEventEditingDidEndOnExit];[cell.contentView addSubview:textField];[textField release];}NSInteger row = [indexPath row];UILabel *label = (UILabel *)[cell viewWithTag:LABLE_TAG];UITextField *textField = nil;for (UIView *oneView in cell.contentView.subviews) {if ([oneView isMemberOfClass:[UITextField class]]) {textField = (UITextField *)oneView;}}label.text = [fieldLables objectAtIndex:row];textField.text = [listData objectAtIndex:row];textField.tag = row;return cell; }
实现TableView委托方法
#pragma mark 文本字段控件的委托方法 - (void)textFieldDidEndEditing:(UITextField *)textField {NSLog(@"修改 行 %i -- value %@", textField.tag ,textField.text); }
RootViewController中 viewDidLoad方法
//增加可编辑详细窗格控制器TeamsViewController *teamsViewController = [[TeamsViewController alloc] initWithStyle:UITableViewStylePlain];teamsViewController.title = @"Detail Edit";teamsViewController.rowImage = [UIImage imageNamed:@"detailEditIcon.png"];[array addObject:teamsViewController];[teamsViewController release];
注：
1 本教程是基于关东升老师的教程
2 基于黑苹果10.6.8和xcode4.2
3 本人初学，有什么不对的望指教
4 教程会随着本人学习，持续更新
5 教程是本人从word笔记中拷贝出来了，所以格式请见谅
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