所以我有一个非常奇怪的问题，当我在模拟器上运行我的应用程序并插入 iPad(在插入电缆的设备上运行应用程序)时，它一切正常。但是，在插入设备并尝试使用该应用程序后在设备上运行后，它崩溃了。尝试查看设备崩溃日志，我看到:

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libobjc.A.dylib                 0x3672bf78 objc_msgSend + 16
1   App                     0x000ca834 -[AHAppImageData dealloc] (AHInstagramImageData.m:122)
2   libobjc.A.dylib                 0x3672d16e _objc_rootRelease + 30
3   CoreFoundation                  0x33d792e0 CFRelease + 88
4   CoreFoundation                  0x33d8ea30 -[__NSArrayM removeObjectAtIndex:] + 288
5   CoreFoundation                  0x33d84adc -[NSMutableArray removeAllObjects] + 64
6   App                     0x000f717e -[AHImageDataSource clearDataSource] (AHImageDataSource.m:53)
7   App                     0x000c0a36 __49-[AHMainViewController loadRequestWithURLString:]_block_invoke_0 (AHMainViewController.m:91)
8   libdispatch.dylib               0x32658c52 _dispatch_call_block_and_release + 6
9   libdispatch.dylib               0x3265aee0 _dispatch_main_queue_callback_4CF$VARIANT$mp + 188
10  CoreFoundation                  0x33e032a6 __CFRunLoopRun + 1262
11  CoreFoundation                  0x33d8649e CFRunLoopRunSpecific + 294
12  CoreFoundation                  0x33d86366 CFRunLoopRunInMode + 98
13  GraphicsServices                0x37d68432 GSEventRunModal + 130
14  UIKit                           0x36820cce UIApplicationMain + 1074
15  App                     0x000b2860 main (main.m:16)
16  App                     0x000b2820 0xb1000 + 6176

知道为什么这只发生在设备上，而不是在插入或模拟器运行应用程序时发生吗？

根据下面的评论，我展示了对此负责的代码:

 [[AHMyAppAPIClient sharedClient] getPath:requestURLPath parameters:nil 
             success:^(AFHTTPRequestOperation *operation, id response) {
                 [self.progressHUD_ hide:YES];


                 self.nextPaginationURL_ = [[response valueForKey:@"pagination"] valueForKey:@"next_url"];

                 [self.collectionView_.pullToRefreshView stopAnimating];
                 [[NSOperationQueue sharedOperationQueue] cancelAllOperations];


                 NSArray *arr = [response valueForKey:@"data"];
                 if ([arr count] > 0){
                     [[AHImageDataSource sharedDataSource] clearDataSource];
                 }


                for (NSDictionary * data in arr){
                     AHInstagramImageData * imgData = [[AHInstagramImageData alloc] initWithData:data];
                     [[AHImageDataSource sharedDataSource] addObject:imgData];
                     [imgData release];
                 }


                 dispatch_async(dispatch_get_main_queue(), ^{
                     [self.collectionView_ setContentOffset:CGPointMake(0, 0)];
                     [self.collectionView_ reloadData];

                 });

             }
             failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                 [self.progressHUD_ hide:YES];
                 NSLog(@"Error fetching user data!");
                 NSLog(@"%@", error);      

             }];

这是我设置数据源的方式:

extern NSString * const kClearDataSource;

@interface AHImageDataSource : NSObject
+ (AHImageDataSource *)sharedDataSource;
- (void) clearDataSource;
- (void) addObject:(id) object;
- (void) addObject:(id)object atIndex:(int) index;
- (int) count;
- (id) objectAtIndex:(int) index;
@end


NSString * const kClearDataSource = @"clearDataSource";

@interface AHImageDataSource()
{
    NSMutableArray * imageDataSource_;
}

@property (nonatomic, retain) NSMutableArray * imageDataSource_;

@end

@implementation AHImageDataSource
@synthesize imageDataSource_;

+ (AHImageDataSource *)sharedDataSource {
    static AHImageDataSource *_sharedClient = nil;
    static dispatch_once_t oncePredicate;
    dispatch_once(&oncePredicate, ^{
        _sharedClient = [[self alloc] init];
    });

    return _sharedClient;
}


- (id)init {
    self = [super init];
    if (!self) {
        return nil;
    }

    NSMutableArray * temp = [[NSMutableArray alloc] initWithCapacity:200];
    self.imageDataSource_  = temp;
    [temp release];


    return self;
}

-(void) clearDataSource
{
    if ([self.imageDataSource_ count] > 0){
        [self.imageDataSource_ removeAllObjects];
    }

}

- (void) addObject:(id) object
{
    [self.imageDataSource_ addObject:object];
}

- (void) addObject:(id)object atIndex:(int) index
{
    [self.imageDataSource_ insertObject:object atIndex:index];
}

- (int) count
{
    return [self.imageDataSource_ count];
}

- (id) objectAtIndex:(int) index
{
    if (index >= 0 && index < [self.imageDataSource_ count]){
        return [self.imageDataSource_ objectAtIndex:index];
    } 

    return nil;
}

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

@end

编辑:

NSZombieEnabled 似乎隐藏了这个问题。当我禁用 NSZombieEnabled 时，它现在会在模拟器和设备上崩溃。

最佳答案

我同意 Jim 的观点，看起来像是双重发布。

我会利用 Instruments 的“zombie”配置文件来测试这种情况。它只能在模拟器中完成，但应该向您准确显示双重发布的内容。

一旦 100% 清楚了，解决问题通常就很容易了。

关于iphone - 仅在设备上运行应用程序时出现崩溃问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/10689969/