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간단한 체크리스트 앱을 쓰고 있습니다. 두 개의 UIViewController 있습니다. 첫 번째는 체크리스트를 UITableView에 표시합니다. UIBarButtonItem을 사용하여 새 작업을 추가하기 위해 두 번째 뷰를 스택으로 푸시합니다. 모든 작업은 배열로 저장됩니다.UITableView의 셀 관련 문제
모든 것이 효과가 있습니다.
편집 모드로 전환하고 테이블보기에서 항목을 삭제하면 해당 항목이 테이블보기와 배열에서 제거됩니다.이 부분은 정상적으로 작동하는 것 같습니다. 그러나 항목을 삭제 한 후에 바 버튼 항목을 눌러 새 작업을 추가하면 문제가 발생합니다.
NSLog는 새 항목이 배열에 추가되었다고 알려주지 만 테이블보기로 돌아 오면 삭제 된 항목이 새 항목 대신 표시됩니다. 테이블 뷰는 대기열에서 제외 된 셀을 재사용하는 것으로 보입니다 (확실하지 않음).
내가 뭘 잘못하고 있니?
CLCheckListViewController.m
#import "CLCheckListViewController.h"
#import "CLTaskFactory.h"
#import "CLTaskStore.h"
#import "CLAddTaskViewController.h"
@implementation CLCheckListViewController
{
__weak IBOutlet UITableView *checkList;
}
- (id)init
{
self = [super init];
if (self) {
// add five sample tasks
CLTaskFactory *task1 = [[CLTaskFactory alloc] init];
[task1 setTaskName:@"Task 1"];
[task1 setDidComplete:NO];
[[CLTaskStore sharedStore] addTask:task1];
CLTaskFactory *task2 = [[CLTaskFactory alloc] init];
[task2 setTaskName:@"Task 2"];
[task2 setDidComplete:NO];
[[CLTaskStore sharedStore] addTask:task2];
CLTaskFactory *task3 = [[CLTaskFactory alloc] init];
[task3 setTaskName:@"Task 3"];
[task3 setDidComplete:NO];
[[CLTaskStore sharedStore] addTask:task3];
CLTaskFactory *task4 = [[CLTaskFactory alloc] init];
[task4 setTaskName:@"Task 4"];
[task4 setDidComplete:NO];
[[CLTaskStore sharedStore] addTask:task4];
CLTaskFactory *task5 = [[CLTaskFactory alloc] init];
[task5 setTaskName:@"Task 5"];
[task5 setDidComplete:NO];
[[CLTaskStore sharedStore] addTask:task5];
}
return self;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[checkList reloadData];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// create edit button
[[self navigationItem] setLeftBarButtonItem:[self editButtonItem]];
// create title
[[self navigationItem] setTitle:@"Checklist"];
// create add guest button
UIBarButtonItem *bbi = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(pushAddTask)];
[[self navigationItem] setRightBarButtonItem:bbi];
}
- (void)pushAddTask
{
CLAddTaskViewController *advk = [[CLAddTaskViewController alloc] init];
[[self navigationController] pushViewController:advk animated:YES];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [[[CLTaskStore sharedStore] allTasks] count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [checkList dequeueReusableCellWithIdentifier:CellIdentifier];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
// put the tasks into the cell
[[cell textLabel] setText:[NSString stringWithFormat:@"%@", [[[CLTaskStore sharedStore] allTasks] objectAtIndex:[indexPath row]]]];
// put the checkbox into the cell's accessory view
UIButton *checkBox = [UIButton buttonWithType:UIButtonTypeCustom];
checkBox = [UIButton buttonWithType:UIButtonTypeCustom];
[checkBox setImage:[UIImage imageNamed:@"checkbox.png"] forState:UIControlStateNormal];
[checkBox setImage:[UIImage imageNamed:@"checkbox-checked.png"] forState:UIControlStateSelected];
checkBox.frame = CGRectMake(0, 0, 30, 30);
checkBox.userInteractionEnabled = YES;
[checkBox addTarget:self action:@selector(didCheckTask:) forControlEvents:UIControlEventTouchDown];
cell.accessoryView = checkBox;
}
return cell;
}
- (void)didCheckTask:(UIButton *)button
{
CGPoint hitPoint = [button convertPoint:CGPointZero toView:checkList];
hitIndex = [checkList indexPathForRowAtPoint:hitPoint];
task = [[[CLTaskStore sharedStore] allTasks] objectAtIndex:[hitIndex row]];
if (task.didComplete) {
task.didComplete = NO;
} else {
task.didComplete = YES;
}
NSInteger taskCount = [[[CLTaskStore sharedStore] allTasks] count];
for (int i = 0; i < taskCount; i++) {
NSLog(@"%@, status: %@", [[[CLTaskStore sharedStore] allTasks] objectAtIndex:i], [[[[CLTaskStore sharedStore] allTasks] objectAtIndex:i] didComplete][email protected]"YES":@"NO");
}
// toggle checkbox
button.selected = !button.selected;
}
- (void)setEditing:(BOOL)editing animated:(BOOL)animated
{
[super setEditing:editing animated:animated];
// set editing mode
if (editing) {
self.navigationItem.title = @"Edit Checklist";
[checkList setEditing:YES];
} else {
self.navigationItem.title = @"Checklist";
[checkList setEditing:NO];
}
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle
forRowAtIndexPath:(NSIndexPath *)indexPath
{
// remove task
if (editingStyle == UITableViewCellEditingStyleDelete) {
// remove task from CLTaskStore
task = [[[CLTaskStore sharedStore] allTasks] objectAtIndex:[indexPath row]];
[[CLTaskStore sharedStore] removeTask:task];
// remove guest from table view
[checkList deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
// reload table view
//[checkList reloadData];
}
}
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath
{
[[CLTaskStore sharedStore] moveTaskAtIndex:[sourceIndexPath row] toIndex:[destinationIndexPath row]];
}
@end
CLAddTaskViewController.m
#import "CLAddTaskViewController.h"
#import "CLTaskFactory.h"
#import "CLTaskStore.h"
@implementation CLAddTaskViewController
- (void)viewDidLoad
{
[[self navigationItem] setTitle:@"Add Task"];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
// clear first responder
[[self view] endEditing:YES];
// create new task
CLTaskFactory *newTask = [[CLTaskFactory alloc] init];
[newTask setTaskName:[newTaskName text]];
// add new guest to RCGuestStore
[[CLTaskStore sharedStore] addTask:newTask];
}
@end
CLAddTaskFactory.m
#import "CLTaskFactory.h"
@implementation CLTaskFactory
@synthesize taskName;
- (void)setDidComplete:(BOOL)dc
{
didComplete = dc;
}
- (BOOL)didComplete
{
return didComplete;
}
- (NSString *)description
{
// override the description
NSString *descriptionString = [[NSString alloc] initWithFormat:@"%@", taskName];
return descriptionString;
}
@end
CLAddTaskStore.m
#import "CLTaskStore.h"
#import "CLTaskFactory.h"
#import "CLCheckListViewController.h"
@implementation CLTaskStore
+ (id)allocWithZone:(NSZone *)zone
{
return [self sharedStore];
}
+ (CLTaskStore *)sharedStore
{
static CLTaskStore *sharedStore = nil;
if (!sharedStore) {
sharedStore = [[super allocWithZone:nil] init];
}
return sharedStore;
}
- (id)init
{
self = [super init];
if (self) {
allTasks = [[NSMutableArray alloc] init];
}
return self;
}
- (NSMutableArray *)allTasks
{
return allTasks;
}
- (void)addTask:(CLTaskFactory *)task
{
[allTasks addObject:task];
NSLog(@"Task added: %@", task);
}
- (void)removeTask:(CLTaskFactory *)task
{
// remove the item for the deleted row from the store
[allTasks removeObjectIdenticalTo:task];
NSInteger taskCount = [allTasks count];
NSLog(@"Removed: %@, there are now %d remaining tasks, they are:", task, taskCount);
for (int i = 0; i < taskCount; i++) {
NSLog(@"%@, status: %@", [[[CLTaskStore sharedStore] allTasks] objectAtIndex:i], [[[[CLTaskStore sharedStore] allTasks] objectAtIndex:i] didComplete][email protected]"YES":@"NO");
}
}
- (void)moveTaskAtIndex:(int)from toIndex:(int)to
{
if (from == to) {
return;
}
CLTaskFactory *task = [allTasks objectAtIndex:from];
[allTasks removeObjectAtIndex:from];
[allTasks insertObject:task atIndex:to];
}
@end
도움 주셔서 감사합니다.
덕분에 코드를 변경 셀
if(cell == nil)을 설정. 매우 도움이되었고, 나는 그것을 더 잘 이해합니다. – mySilmaril