ios – 通过Apple的ToDoList应用程序教程,项目点击不会正确添加“已完成”复选标记.

概述当我点击一个项目时,它似乎没有注册并在右侧添加一个复选标记.当我点击后续项目时,它会在我之前点击的那个旁边显示一个复选标记,但不会显示我刚刚点击的那个,依此类推,始终保留一个动作. XYZToDoListViewController.m： //// XYZToDoListViewController.m// ToDoList//// Created by Andrew Ghobria 当我点击一个项目时,它似乎没有注册并在右侧添加一个复选标记.当我点击后续项目时,它会在我之前点击的那个旁边显示一个复选标记,但不会显示我刚刚点击的那个,依此类推,始终保留一个动作.

XYZTodoListVIEwController.m：

////  XYZTodoListVIEwController.m//  TodoList////  Created by Andrew Ghobrial on 2/15/14.////#import "XYZTodoListVIEwController.h"#import "XYZTodoItem.h"@interface XYZTodoListVIEwController ()@property NSMutableArray *todoItems;@end@implementation XYZTodoListVIEwController- (voID)loadInitialData {    XYZTodoItem *item1 = [[XYZTodoItem alloc] init];    item1.itemname = @"Buy milk";    [self.todoItems addobject:item1];    XYZTodoItem *item2 = [[XYZTodoItem alloc] init];    item2.itemname = @"Buy eggs";    [self.todoItems addobject:item2];    XYZTodoItem *item3 = [[XYZTodoItem alloc] init];    item3.itemname = @"Read a book";    [self.todoItems addobject:item3];} - (IBAction)unwindToList:(UIStoryboardSegue *)segue{}- (ID)initWithStyle:(UItableVIEwStyle)style{    self = [super initWithStyle:style];    if (self) {        // Custom initialization    }    return self;}- (voID)vIEwDIDLoad{    [super vIEwDIDLoad];    self.todoItems = [[NSMutableArray alloc] init];    [self loadInitialData];    // Uncomment the following line to preserve selection between presentations.    // self.cleaRSSelectionOnVIEwWillAppear = NO;    // Uncomment the following line to display an Edit button in the navigation bar for this vIEw controller.    // self.navigationItem.rightbarbuttonItem = self.editbuttonItem;}- (voID)dIDReceiveMemoryWarning{    [super dIDReceiveMemoryWarning];    // dispose of any resources that can be recreated.}#pragma mark - table vIEw data source- (NSInteger)numberOfSectionsIntableVIEw:(UItableVIEw *)tableVIEw{    return 1;}- (NSInteger)tableVIEw:(UItableVIEw *)tableVIEw numberOfRowsInSection:(NSInteger)section{    // Return the number of rows in the section.    return [self.todoItems count];}- (UItableVIEwCell *)tableVIEw:(UItableVIEw *)tableVIEw cellForRowAtIndexPath:(NSIndexPath *)indexPath{    static Nsstring *CellIDentifIEr = @"ListPrototypeCell";    UItableVIEwCell *cell = [tableVIEw dequeueReusableCellWithIDentifIEr:CellIDentifIEr forIndexPath:indexPath];    XYZTodoItem *todoItem = [self.todoItems objectAtIndex:indexPath.row];    cell.textLabel.text = todoItem.itemname;    if (todoItem.completed) {        cell.accessoryType = UItableVIEwCellAccessorycheckmark;    } else {        cell.accessoryType = UItableVIEwCellAccessoryNone;    }    return cell;}/*// OverrIDe to support conditional editing of the table vIEw.- (BOol)tableVIEw:(UItableVIEw *)tableVIEw canEditRowAtIndexPath:(NSIndexPath *)indexPath{    // Return NO if you do not want the specifIEd item to be editable.    return YES;}*//*// OverrIDe to support editing the table vIEw.- (voID)tableVIEw:(UItableVIEw *)tableVIEw commitEditingStyle:(UItableVIEwCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath{    if (editingStyle == UItableVIEwCellEditingStyleDelete) {        // Delete the row from the data source        [tableVIEw deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UItableVIEwRowAnimationFade];    }       else if (editingStyle == UItableVIEwCellEditingStyleInsert) {        // Create a new instance of the appropriate class,insert it into the array,and add a new row to the table vIEw    }   }*//*// OverrIDe to support rearranging the table vIEw.- (voID)tableVIEw:(UItableVIEw *)tableVIEw moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath{}*//*// 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;}*//*#pragma mark - Navigation// In a story board-based application,you will often want to do a little preparation before navigation- (voID)prepareForSegue:(UIStoryboardSegue *)segue sender:(ID)sender{    // Get the new vIEw controller using [segue destinationVIEwController].    // Pass the selected object to the new vIEw controller.} */#pragma mark - table vIEw delegate- (voID)tableVIEw:(UItableVIEw *)tableVIEw dIDdeselectRowAtIndexPath:(NSIndexPath *)indexPath{    [tableVIEw deselectRowAtIndexPath:indexPath animated:NO];    XYZTodoItem *tappedItem = [self.todoItems objectAtIndex:indexPath.row];    tappedItem.completed = !tappedItem.completed;    [tableVIEw reloadRowsAtIndexPaths:@[indexPath]withRowAnimation:UItableVIEwRowAnimationNone];}@end

解决方法

- (voID)tableVIEw:(UItableVIEw *)tableVIEw dIDdeselectRowAtIndexPath:(NSIndexPath *)indexPath

应该

- (voID)tableVIEw:(UItableVIEw *)tableVIEw dIDSelectRowAtIndexPath:(NSIndexPath *)indexPath

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@H_404_34@ 总结

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