objective-c - AFNetworking 崩溃，正在下载 200MB 以上的大文件

Question

我下载 250MB 以下的文件没有问题，但当我尝试下载 250MB 以上的 zip 时，应用程序突然崩溃，没有任何错误。有时会通过，有时不会。泄漏确认没有膨胀或内存丧失。

我现在还注意到，只有当我使用 xcode 进行调试时才会发生崩溃。当我运行应用程序并在我没有调试的情况下下载较大的文件时，没有任何问题

在下载较大的文件时，我是否需要以不同的方式处理 AFNetworking 类？

这是我的代码

NSURL* url=[BFAppGlobals getServerURL:[M.Properties objectForKey:@"zip_path" ]];
NSMutableURLRequest  *request = [NSMutableURLRequest requestWithURL:url];
[request setTimeoutInterval:3600];


 AFHTTPRequestOperation *operation = [[[AFHTTPRequestOperation alloc]  initWithRequest:request] autorelease];

NSString* writePath=[BFAppGlobals getContentResourcePathForFile:strFile];

[delegate onStartDownload:M];
operation.outputStream = [NSOutputStream outputStreamToFileAtPath:writePath append:YES];

[operation setDownloadProgressBlock:^(NSInteger bytesRead, NSInteger totalBytesRead, NSInteger totalBytesExpectedToRead) {

    int b=totalBytesRead ;
    int total=totalBytesExpectedToRead;
    float perc=(float)b/(float)total;
    M.progress=perc;
    [((NSObject*)delegate) performSelectorOnMainThread:@selector(onDataReceviedFromRequest:) withObject:M   waitUntilDone:YES];

}];

[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {

     NSDictionary* params=[NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:writePath,writeDirectory, M, nil] forKeys:[NSArray arrayWithObjects:@"Path",@"Dir",@"Model", nil]];
    [self performSelectorInBackground:@selector(unzipDownloaded:) withObject:params];


} 
failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"fail! %@", [error localizedDescription]);
    [delegate onErrorDownload:M WithError:[error localizedDescription]];
    ActiveModel=nil;
}];

[operation start];



****************************  UPDATE ADDED CRASH LOG ***************************************

    Thread 0 Crashed:
    0   libobjc.A.dylib                 0x37d24fbc objc_msgSend + 16
    1   Foundation                      0x35502508 __57-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke_0 + 12
    2   CoreFoundation                  0x381aa570 ___CFXNotificationPost_block_invoke_0 + 64
    3   CoreFoundation                  0x381360c8 _CFXNotificationPost + 1400
    4   Foundation                      0x354763f4 -[NSNotificationCenter postNotificationName:object:userInfo:] + 60
    5   Foundation                      0x35477c24 -[NSNotificationCenter postNotificationName:object:] + 24
    6   BFiPad                          0x0006d2fc 0x1000 + 443132
    7   CoreFoundation                  0x3813d224 -[NSObject performSelector:withObject:] + 36
    8   Foundation                      0x35517750 __NSThreadPerformPerform + 344
    9   CoreFoundation                  0x381b2afc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 8
    10  CoreFoundation                  0x381b22c8 __CFRunLoopDoSources0 + 208
    11  CoreFoundation                  0x381b106e __CFRunLoopRun + 646
    12  CoreFoundation                  0x381344d6 CFRunLoopRunSpecific + 294
    13  CoreFoundation                  0x3813439e CFRunLoopRunInMode + 98
    14  GraphicsServices                0x37f0bfc6 GSEventRunModal + 150
    15  UIKit                           0x31cb473c UIApplicationMain + 1084
    16  BFiPad                          0x00003f72 0x1000 + 12146
    17  BFiPad                          0x00003f30 0x1000 + 12080

Answer 1

这似乎只发生在 Debug模式下。用完 Debug模式或发布更多解决此问题