我是 xcode 的新手。我尝试了一个小时，但我做不到。我该如何解决？我正在尝试做一个待办事项清单。相同的代码适用于其他视图控制器。我确实将代码复制粘贴到很长。我进行了更正，然后出现了这个错误。预先感谢您的帮助。
TodoMaster2ViewController.h
#import <UIKit/UIKit.h>
#import "TodoTask2.h"
@interface TodoMaster2ViewController : UITableViewController
- (IBAction)done2:(UIStoryboardSegue *)sender;
- (IBAction)cancel2:(UIStoryboardSegue *)sender;
- (IBAction)buttonEditClick2:(UIBarButtonItem *)sender;
- (void) tableView2: (UITableView *) tableView didSelectRowAtIndexPath: (NSIndexPath *) indexPath;
@end
TodoMaster2ViewController.m
#import "TodoMaster2ViewController.h"
#import "TodoDetailViewController.h"
#import "TodoAdd2ViewController.h"
@interface TodoMaster2ViewController () {
NSMutableArray *_objects2;
}
@end
@implementation TodoMaster2ViewController
- (void)awakeFromNib
{
[super awakeFromNib];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
/*
self.navigationItem.leftBarButtonItem = self.editButtonItem;
UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(insertNewObject:)];
self.navigationItem.rightBarButtonItem = addButton;
*/
UIApplication *app = [UIApplication sharedApplication];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationDidEnterBackground:) name:UIApplicationDidEnterBackgroundNotification object:app];
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
// paths[0];
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *plistPath = [documentsDirectory stringByAppendingPathComponent:@"data.plist"];
if ([fileManager fileExistsAtPath:plistPath] == YES)
{
NSMutableArray *readArray = [NSMutableArray arrayWithContentsOfFile:plistPath];
_objects2 = [[NSMutableArray alloc] init];
NSEnumerator *enumerator = [readArray objectEnumerator];
NSString *str = [[NSString alloc] init];
while ( str = [enumerator nextObject])
{
todoTask2 *tempTodo = [[todoTask2 alloc] init];
tempTodo.taskName2 = str;
str = [enumerator nextObject];
tempTodo.checked2 = str;
[_objects2 addObject:tempTodo];
}
[[self tableView] reloadData];
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
- (void)insertNewObject:(id)sender
{
if (!_objects) {
_objects = [[NSMutableArray alloc] init];
}
[_objects insertObject:[NSDate date] atIndex:0];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
[self.tableView insertRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
}
*/
#pragma mark - Table View
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return _objects2.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];
NSDate *object = _objects2[indexPath.row];
cell.textLabel.text = [object description];
return cell;
}
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
[_objects2 removeObjectAtIndex:indexPath.row];
[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;
}
*/
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:@"showDetail"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
NSDate *object = _objects2[indexPath.row];
[[segue destinationViewController] setDetailItem:object];
}
}
#pragma mark yeni-task
- (IBAction)done:(UIStoryboardSegue *)segue;
{
if ([[segue identifier] isEqualToString:@"DoneAdd"] ||
[[segue identifier] isEqualToString:@"DoneKeyboard"]) {
TodoAdd2ViewController *addController = [segue sourceViewController];
if (![addController.textFieldTask2.text isEqualToString:@""]) {
if (!_objects2) {
_objects2 = [[NSMutableArray alloc] init];
}
todoTask2 *test = [[todoTask2 alloc] init];
test.taskName2 = addController.textFieldTask2.text;
if (addController.durum2.isOn) {
test.checked2 = @"yes";
} else {
test.checked2 = @"no";
}
[KGStatusBar showSuccessWithStatus:@"Yeni Fikir Eklendi!"];
//[_objects insertObject:[[NSMutableAttributedString alloc] initWithString:addController.textFieldTask.text] atIndex:_objects.count];
[_objects2 insertObject:test atIndex:_objects2.count];
[[self tableView] reloadData];
addController.textFieldTask2.text = @"";
}
[self dismissViewControllerAnimated:YES completion:NULL];
[self setEditing: NO animated: YES];
}
}
#pragma mark task tamamlandı
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
todoTask2 *temp = [_objects2 objectAtIndex:[indexPath row]];
if( [temp.checked2 isEqualToString:@"yes"] )
{
NSMutableAttributedString *tempString = [[NSMutableAttributedString alloc] initWithString:temp.taskName2];
[tempString addAttribute:NSForegroundColorAttributeName value:[UIColor grayColor] range:NSMakeRange(0, [tempString length])];
[tempString addAttribute:NSStrikethroughStyleAttributeName value:[NSNumber numberWithInt:NSUnderlineStyleSingle] range:NSMakeRange(0, [tempString length])];
cell.imageView.image = [UIImage imageNamed:@"check.png"];
[[cell textLabel] setAttributedText:tempString];
}
else
{
NSMutableAttributedString *tempString = [[NSMutableAttributedString alloc] initWithString:temp.taskName2];
cell.imageView.image = [UIImage imageNamed:@"uncheck.png"];
cell.accessoryType = UITableViewCellAccessoryNone;
[[cell textLabel] setAttributedText:tempString];
}
}
- (IBAction)cancel:(UIStoryboardSegue *)segue;
{
if([[segue identifier] isEqualToString:@"CancelAdd"]) {
TodoAdd2ViewController *addController = [segue sourceViewController];
addController.textFieldTask2.text = @"";
[self dismissViewControllerAnimated:YES completion:NULL];
}
}
- (IBAction)buttonEditClick:(UIBarButtonItem *)sender {
if (self.tableView.editing)
[[self tableView] setEditing:NO animated:YES];
else
[[self tableView] setEditing:YES animated:YES];
}
- (void) tableView:(UITableView *) tableView didSelectRowAtIndexPath:(NSIndexPath *) indexPath
{
todoTask2 *temp = [_objects2 objectAtIndex:[indexPath row]];
if( [temp.checked2 isEqual: @"yes"] )
{
temp.checked2 = @"no";
/*
[[_objects objectAtIndex:[indexPath row]] addAttribute:NSForegroundColorAttributeName value:[UIColor blackColor] range:NSMakeRange(0, [[_objects objectAtIndex:[indexPath row]] length])];
[[_objects objectAtIndex:[indexPath row]] addAttribute:NSStrikethroughStyleAttributeName value:[NSNumber numberWithInt:NSUnderlineStyleNone] range:NSMakeRange(0, [[_objects objectAtIndex:[indexPath row]] length])];
[tableView cellForRowAtIndexPath:indexPath].accessoryType = UITableViewCellAccessoryNone;
*/
}
else
{
temp.checked2 = @"yes";
/*
[[_objects objectAtIndex:[indexPath row]] addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, [[_objects objectAtIndex:[indexPath row]] length])];
[[_objects objectAtIndex:[indexPath row]] addAttribute:NSStrikethroughStyleAttributeName value:[NSNumber numberWithInt:NSUnderlineStyleSingle] range:NSMakeRange(0, [[_objects objectAtIndex:[indexPath row]] length])];
[tableView cellForRowAtIndexPath:indexPath].accessoryType = UITableViewCellAccessoryCheckmark;
*/
}
[[self tableView] reloadData];
//[_objects setObject: atIndexedSubscript:[indexPath row]]
}
- (void)applicationDidEnterBackground:(NSNotification *)notification {
NSLog(@"Entering Background");
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
// paths[0];
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *plistPath = [documentsDirectory stringByAppendingPathComponent:@"data.plist"];
//NSArray *keys = [[NSArray alloc] initWithObjects:@"task", nil];
NSMutableArray *array = [[NSMutableArray alloc] init];
NSEnumerator *enumerator = [_objects2 objectEnumerator];
todoTask2 *tempTodo;
while ( tempTodo = [enumerator nextObject])
{
[array addObject:tempTodo.taskName2];
[array addObject:tempTodo.checked2];
}
[array writeToFile:plistPath atomically:YES];
}
@end
非常遗憾。这是我的错误。 http://d.pr/i/s40r