導(dǎo)航控制器和表視圖(二)

先把效果圖貼上:

#import <UIKit/UIKit.h> #import "SecondLevelViewController.h" @interface CheckListController : SecondLevelViewController @property (nonatomic,strong) NSArray *list; @property (nonatomic,strong) NSIndexPath *lastIndexPath;// @end

-(void)viewDidLoad {     NSArray *array = [[NSArray alloc] initWithObjects:@"Who has",@"BUB gruop",@"Who Pudding",@"Scodey Snack",@"EverLasting",@"Green Eggs annd",@"Soy Lent",@"Hard Tack",@"Lembas",@"Roast Breaf",@"Lembas Bread",@"Roast Beast",@"Bancmangr", nil];     self.list = array;     [super viewDidLoad]; }

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {     static NSString *CheckMarkCellIdentifier = @"CheckMarkCellIdentfier";     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CheckMarkCellIdentifier];     if (cell==nil) {         cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CheckMarkCellIdentifier];     } //    從單元視圖中提取行     NSUInteger row = [indexPath row]; //    從當(dāng)前選項(xiàng)提取行     NSUInteger oldRow = [self.lastIndexPath row]; //    從數(shù)組中獲取一行值，將他分給單元格的標(biāo)題     cell.textLabel.text = [self.list objectAtIndex:row]; //    判斷兩個(gè)行是否是一行，如果是則cell的accessory屬性為UITableViewCellAccessoryCheckmark，否則設(shè)置為UITableViewCellAccessoryNone，還要確保lastIndexPath不為空     cell.accessoryType =(row == oldRow && self.lastIndexPath !=nil)? UITableViewCellAccessoryCheckmark:UITableViewCellAccessoryNone;     return cell; }

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { //    從單元視圖中提取行     int newRow = [indexPath row]; //    如果獲取上次選中行不為空，則提取上次選中的行     int oldRow = (self.lastIndexPath != nil)?[self.lastIndexPath row] : -1; //    如果從視圖中選取當(dāng)前行和上次在視圖中選取的不一樣     if (newRow != oldRow) { //        獲取剛才選中單元知道標(biāo)記作為拓展圖標(biāo)         UITableViewCell *newCell = [tableView cellForRowAtIndexPath:indexPath];         newCell.accessoryType = UITableViewCellAccessoryCheckmark; //        把上次選中的單元的拓展圖標(biāo)設(shè)置為無         UITableViewCell *oldCell = [tableView cellForRowAtIndexPath:self.lastIndexPath];         oldCell.accessoryType = UITableViewCellAccessoryNone; //        儲(chǔ)存本次標(biāo)記行索引，下次標(biāo)記時(shí)使用         self.lastIndexPath=indexPath;         } //    當(dāng)我們單元表格視圖拓展標(biāo)記改變之后就要把現(xiàn)在標(biāo)記的單元格設(shè)置為選中狀態(tài)     [tableView deselectRowAtIndexPath:indexPath animated:YES];      }

 /******** Check List *********/     CheckListController *checkListController = [[CheckListController alloc] initWithStyle:UITableViewStylePlain];     checkListController.title = @"Check One";     checkListController.rowImage = [UIImage imageNamed:@"checkmarkControllerIcon.png"]; //    添加控制器對(duì)象到數(shù)組中，顯示在導(dǎo)航控制器一層     [array addObject:checkListController];

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {     static NSString *RowControlIdentfier = @"Row ControlIdentfier";     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:RowControlIdentfier];     if (cell == nil) {         cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:RowControlIdentfier];         UIImage *buttonUpImage = [UIImage imageNamed:@"button_up.png"];         UIImage *buttonDownImage = [UIImage imageNamed:@"button_down.png"]; //        由于UIButton的buttonType屬性被聲明為只讀，因此需要用buttonWithType來創(chuàng)建按鈕，不能使用alloc init 來創(chuàng)建，因?yàn)椴荒軐粹o的類型更改為UIButtonTypeCustom，此操作目的是自定義按鈕圖像         UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; //        設(shè)置按鈕大小與圖像匹配         button.frame = CGRectMake(0, 0, buttonUpImage.size.width, buttonUpImage.size.height); //        設(shè)置正常狀態(tài)下按鈕背景圖片         [button setBackgroundImage:buttonUpImage forState:UIControlStateNormal]; //        設(shè)置按鈕被按下高亮狀態(tài)下的背景圖片         [button setBackgroundImage:buttonDownImage forState:UIControlStateHighlighted];         [button setTitle:@"Tap" forState:UIControlStateNormal];         [button addTarget:self action:@selector(buttonTaped:) forControlEvents:UIControlEventTouchUpInside]; //        把定義的button分配給單元的附加視圖         cell.accessoryView = button;     }     NSUInteger row = [indexPath row];     NSString *rowTitle = [self.list objectAtIndex:row];     cell.textLabel.text=rowTitle;     return cell; }

-(void)viewDidLoad {     if (self.list==nil) {         NSMutableArray *array = [[NSMutableArray alloc] initWithObjects:@"Eeny",@"Meey",@"Miney",@"Miney",@"Moe",@"Toe",@"Error",@"HELAN sdfh",@"AKEB",@"By",@"For", nil];         self.list=array;     } //    在導(dǎo)航欄上添加按鈕，并添加一個(gè)觸發(fā)事件     UIBarButtonItem *moveButon = [[UIBarButtonItem alloc]initWithTitle:@"Move"                                                                   style:UIBarButtonItemStyleBordered target:self                                                                 action:@selector(toggleMove)]; //    設(shè)置按鈕為導(dǎo)航欄上又按鈕     self.navigationItem.rightBarButtonItem = moveButon;     [super viewDidLoad]; }

//點(diǎn)擊導(dǎo)航欄右邊按調(diào)用這個(gè)方法，使單元格變成可編輯模式 -(void)toggleMove {     [self.tableView setEditing:!self.tableView.editing animated:YES];     if (self.tableView.editing)          [self.navigationItem.rightBarButtonItem setTitle:@"Done"];     else          [self.navigationItem.rightBarButtonItem setTitle:@"Move"]; }

//通過此方法，表視圖詢問指定行是否可以被刪除，是否可以新行插入 -(UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath { //    返回值表示不可刪除和新行插入操作     return UITableViewCellEditingStyleNone; }

-(void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath { //  檢索需要移動(dòng)的行     NSUInteger fromRow = [sourceIndexPath row]; //   檢索行新位置     NSUInteger toRow = [destinationIndexPath row]; //    下面的從數(shù)組中移除指定對(duì)象 //    檢索一個(gè)指向要移動(dòng)的對(duì)象的指針，并保留對(duì)象，這樣在數(shù)組中刪除對(duì)象時(shí)候?qū)ο蟛粫?huì)被釋放     id object = [self.list objectAtIndex:fromRow];     [self.list removeObjectAtIndex:fromRow]; //    移除之后插入指定新位置     [self.list insertObject:object atIndex:toRow]; }

-(void)viewDidLoad {     if (self.list==nil) {         NSString *path = [[NSBundle mainBundle] pathForResource:@"computers" ofType:@"plist"];         NSMutableArray *array = [[NSMutableArray alloc]initWithContentsOfFile:path];         self.list = array;     }     UIBarButtonItem *editButton = [[UIBarButtonItem alloc]initWithTitle:@"Delete"                                                                   style:UIBarButtonItemStyleBordered target:self                                                                  action:@selector(toggleEdit:)];     self.navigationItem.rightBarButtonItem = editButton;     [super viewDidLoad];      }

#pragma mark - #pragma mark Table View Data Source Methods  -(void) tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { //    獲取當(dāng)前正處于編輯狀態(tài)下的行索引     NSUInteger row =[indexPath row]; //    從屬性列表中刪除該對(duì)象     [self.list removeObjectAtIndex:row]; //    通知tabView表刪除該行     [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; }