Xcode错误 - 线程1：信号SIGABRT

Question

我正在创建一个简单的RSS应用程序，我在Objective-c中表现不佳。应用程序将始终构建成功，并且没有错误或警告，在UITableView中读取RSS，每当我按下它将终止的单元格并在main.m中，此线程将来到＆＃34;线程1：信号SIGABRT＆＃ 34;在这一行：

return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));

我的应用的信息：

该应用程序由Xcode版本创建：4.3.1 该应用程序是根据＆＃34; Master-Detail Application＆＃34;适用于iPhone和MacBook的模板。 我使用的调试器是LLDB，我的iPhone模拟器是5.1 我正在使用Storyboard

这是Main.m：

#import <UIKit/UIKit.h>

#import "AppDelegate.h"

int main(int argc, char *argv[])
{

    @autoreleasepool {
       return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
    }
}

AppDelegate.h是：

#import <UIKit/UIKit.h>

@interface AppDelegate : NSObject <UIApplicationDelegate> {

    UIWindow *window;
    UINavigationController *navigationController;
}

@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) IBOutlet UINavigationController *navigationController;

@end

我的AppDelegate.m是：

#import "AppDelegate.h"




#import "AppDelegate.h"
#import "MasterViewController.h"


@implementation AppDelegate

@synthesize window;
@synthesize navigationController;


#pragma mark -
#pragma mark Application lifecycle

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    
    // Override point for customization after app launch    

    [window addSubview:[navigationController view]];
    [window makeKeyAndVisible];
    return YES;
}


- (void)applicationWillTerminate:(UIApplication *)application {
    // Save data if appropriate
}


#pragma mark -
#pragma mark Memory management

- (void)dealloc {
    [navigationController release];
    [window release];
    [super dealloc];
}


@end

这是控制台消息：

2012-03-17 17:32:29.498 Rahnavard[1862:12e03] fetch rss
2012-03-17 17:33:01.212 Rahnavard[1862:f803] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Could not load NIB in bundle: 'NSBundle </Users/hassantavari/Library/Application Support/iPhone Simulator/5.1/Applications/48090189-E17C-40CF-9BF1-ACA18FC0B02B/Rahnavard.app> (loaded)' with name 'DetailViewController''
*** First throw call stack:
(0x16e4022 0x1875cd6 0x168ca48 0x168c9b9 0x366638 0x20c1fc 0x20c779 0x20c99b 0x20cd11 0x21e8fd 0x21eaef 0x21edbb 0x21f85f 0x21fe06 0x21fa24 0x393c 0x1d65c5 0x1d67fa 0xa6b85d 0x16b8936 0x16b83d7 0x161b790 0x161ad84 0x161ac9b 0x15cd7d8 0x15cd88a 0x145626 0x26a2 0x2615)
terminate called throwing an exception(lldb)

以下是获取RSS：

-(void)fetchRss
{   
    NSLog(@"fetch rss");
    NSData* xmlData = [[NSMutableData alloc] initWithContentsOfURL:[NSURL URLWithString: kRSSUrl] ];
    NSError *error;

    GDataXMLDocument* doc = [[GDataXMLDocument alloc] initWithData:xmlData options:0 error:&error];

    if (doc != nil) {
        self.loaded = YES;

        GDataXMLNode* title = [[[doc rootElement] nodesForXPath:@"channel/title" error:&error] objectAtIndex:0];
        [self.delegate updatedFeedTitle: [title stringValue] ];

        NSArray* items = [[doc rootElement] nodesForXPath:@"channel/item" error:&error];
        NSMutableArray* rssItems = [NSMutableArray arrayWithCapacity:[items count] ];

        for (GDataXMLElement* xmlItem in items) {
            [rssItems addObject: [self getItemFromXmlElement:xmlItem] ];
        }

        [self.delegate performSelectorOnMainThread:@selector(updatedFeedWithRSS:) withObject:rssItems waitUntilDone:YES];
    } else {
        [self.delegate performSelectorOnMainThread:@selector(failedFeedUpdateWithError:) withObject:error waitUntilDone:YES];
    }

    [doc autorelease];
    [xmlData release];
}

MasterViewController.h：

#import <UIKit/UIKit.h>
#import "RSSLoader.h"
#import "DetailViewController.h"


@interface MasterViewController : UITableViewController<RSSLoaderDelegate> {

    RSSLoader* rss;
    NSMutableArray* rssItems;

}



@end

MasterViewController.m：

#import "MasterViewController.h"

#import "DetailViewController.h"




@implementation MasterViewController

#pragma mark -
#pragma mark View lifecycle

- (void)viewDidLoad {
    [super viewDidLoad];

    self.navigationItem.title = @"RAHNAVARD";
    self.navigationItem.prompt = @"LATEST NEWS";
    rssItems = nil;
    rss = nil;

    self.tableView.backgroundColor = [UIColor whiteColor];
    [self.tableView setSeparatorStyle:UITableViewCellSeparatorStyleNone];
    [self.tableView setIndicatorStyle:UIScrollViewIndicatorStyleWhite];

    //self.tableView.tableHeaderView = [[TableHeaderView alloc] initWithText:@"fetching rss feed"];

}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];

}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];

    if (rss==nil) {
        rss = [[RSSLoader alloc] init];
        rss.delegate = self;
        [rss load];
    }
}

/*
 - (void)viewWillDisappear:(BOOL)animated {
 [super viewWillDisappear:animated];
 }
 */
/*
 - (void)viewDidDisappear:(BOOL)animated {
 [super viewDidDisappear:animated];
 }
 */

/*
 // Override to allow orientations other than the default portrait orientation.
 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
 // Return YES for supported orientations.
 return (interfaceOrientation == UIInterfaceOrientationPortrait);
 }
 */


#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 {
    if (rss.loaded == YES) {
        return [rssItems count]*2;
    } else {
        return 1;
    }
}

- (UITableViewCell *)getLoadingTableCellWithTableView:(UITableView *)tableView 
{
    static NSString *LoadingCellIdentifier = @"LoadingCell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:LoadingCellIdentifier];

    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:LoadingCellIdentifier] autorelease];
    }

    cell.textLabel.text = @"Loading...";

    UIActivityIndicatorView* activity = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
    [activity startAnimating];
    [cell setAccessoryView: activity];
    [activity release];

    return cell;
}

- (UITableViewCell *)getTextCellWithTableView:(UITableView *)tableView atIndexPath:(NSIndexPath *)indexPath {
    static NSString *TextCellIdentifier = @"TextCell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:TextCellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:TextCellIdentifier] autorelease];
    }

    NSDictionary* item = [rssItems objectAtIndex: (indexPath.row-1)/2];

    //article preview
    cell.textLabel.font = [UIFont systemFontOfSize:11];
    cell.textLabel.numberOfLines = 3;
    cell.textLabel.textColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.7];
    cell.backgroundColor = [UIColor clearColor];
    cell.textLabel.backgroundColor = [UIColor clearColor];

    UIView *backView = [[[UIView alloc] initWithFrame:CGRectZero] autorelease];
    backView.backgroundColor = [UIColor clearColor];
    cell.backgroundView = backView;

    CGRect f = cell.textLabel.frame;
    [cell.textLabel setFrame: CGRectMake(f.origin.x+15, f.origin.y, f.size.width-15, f.size.height)];
    cell.textLabel.text = [item objectForKey:@"description"];

    return cell;
}

// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    if (rss.loaded == NO) {
        return [self getLoadingTableCellWithTableView:tableView];
    }

    if (indexPath.row % 2 == 1) {
        return [self getTextCellWithTableView:tableView atIndexPath:indexPath];
    }

    static NSString *CellIdentifier = @"TitleCell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    }

    UIView *backView = [[[UIView alloc] initWithFrame:CGRectZero] autorelease];
    backView.backgroundColor = [UIColor clearColor];
    cell.backgroundView = backView;

    NSDictionary* item = [rssItems objectAtIndex: indexPath.row/2];

    cell.textLabel.text = [item objectForKey:@"title"];

    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:[NSArray arrayWithObject: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 -
#pragma mark Table view delegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    [tableView deselectRowAtIndexPath:indexPath animated:NO];

    //DetailViewController *detailViewController = [[DetailViewController alloc] initWithNibName:@"DetailViewController" bundle:nil];
    DetailViewController *detailViewController = [[DetailViewController alloc] initWithNibName:@"DetailViewController" bundle:nil];
    detailViewController.item = [rssItems objectAtIndex:floor(indexPath.row/2)];
    [self.navigationController pushViewController:detailViewController animated:YES];
    [detailViewController release];
}


#pragma mark -
#pragma mark Memory management

- (void)didReceiveMemoryWarning {
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

    // Relinquish ownership any cached data, images, etc that aren't in use.
}

- (void)viewDidUnload {
    // Relinquish ownership of anything that can be recreated in viewDidLoad or on demand.
    // For example: self.myOutlet = nil;
}


- (void)dealloc {
    [rssItems release];
    rssItems = nil;

    [rss release];
    rss = nil;

    [super dealloc];
}

#pragma mark -
#pragma mark RSSLoaderDelegate
-(void)updatedFeedWithRSS:(NSMutableArray*)items
{
    rssItems = [items retain];
    [self.tableView reloadData];
}

-(void)failedFeedUpdateWithError:(NSError *)error
{
    //
}

@end

如果您想了解更多信息，只需通过答案向我说出来，我就会编辑我的问题然后您将编辑您的答案。

我真的很感谢你的帮助。

Answer 1

SIGABRT通常表示存在未捕获的异常。控制台上应该有更多信息。

Answer 2

您正在尝试加载名为DetailViewController的XIB，但不存在此类XIB，或者它不是您当前目标的成员。

Answer 3

如其他答案中所述，SIGABRT是一般未被捕获的例外。你应该更多地了解Objective-C。问题可能在你的UITableViewDelegate方法didSelectRowAtIndexPath。

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

在向您展示处理表数据源和委托方法的代码之前，我不能告诉您更多信息。