应用程序在捏合地图上崩溃

Question

我正在使用 MKMapKit 制作地图。我正在添加注释，甚至提供 setCenterCoordinate 和 设置区域。我正在使用 iOS7.0 编译，但我的设备有 iOS6.1 版本。当我进行捏合时，放大它会崩溃。 我尝试运行仪器，但没有看到任何内存问题。所有分配和泄漏都得到妥善处理。请问哪位大神知道是什么问题？

提供注释的代码：

  NSMutableArray *arr = [[NSMutableArray alloc] init];
    for(int i =0;i<[mListArr count];i++)
    {
        NSDictionary *theDict = [mListArr objectAtIndex:i];
        CLLocationCoordinate2D annotationCoord;

        annotationCoord.latitude = [[theDict objectForKey:kLatitudeKey] doubleValue];
        annotationCoord.longitude = [[theDict objectForKey:kLongitudeKey] doubleValue];

        MKPointAnnotation *annotation = [[MKPointAnnotation alloc] init];
        annotation.coordinate = annotationCoord;
        annotation.title = [theDict objectForKey:kAddressKey];
        annotation.subtitle = [theDict objectForKey:kRegionKey];
        [arr addObject:annotation];

    }
    if([arr count]>0)
    {
        [mapView addAnnotations:arr];

        NSDictionary *theDict = [mListArr objectAtIndex:0];
        CLLocationCoordinate2D annotationCoord;

        annotationCoord.latitude = [[theDict objectForKey:kLatitudeKey] doubleValue];
        annotationCoord.longitude = [[theDict objectForKey:kLongitudeKey] doubleValue];

        [mapView setCenterCoordinate:annotationCoord animated:YES];

        MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(annotationCoord, 50000, 50000);
        [mapView setRegion:[mapView regionThatFits:region] animated:YES];

    }

提前致谢！

编辑： 我正在使用 ARC。

编辑： 以下是日志：

* thread #3: tid = 0x2803, 0x3af605d0 libsystem_kernel.dylib`kevent64 + 24, queue = 'com.apple.libdispatch-manager 
frame #0: 0x3af605d0 libsystem_kernel.dylib`kevent64 + 24 
frame #1: 0x3ae9bd26 libdispatch.dylib`_dispatch_mgr_invoke + 810 
frame #2: 0x3ae97378 libdispatch.dylib`_dispatch_mgr_thread + 36

现在我在设备上运行后得到以下日志：

* thread #1: tid = 0x2403, 0x3791ae46 libGPUSupportMercury.dylib`gpus_ReturnGuiltyForHardwareRestart + 10, queue = 'com.apple.main-thread, stop reason = EXC_BAD_ACCESS (code=1, address=0x1)
    frame #0: 0x3791ae46 libGPUSupportMercury.dylib`gpus_ReturnGuiltyForHardwareRestart + 10
    frame #1: 0x3791b764 libGPUSupportMercury.dylib`gpusSubmitDataBuffers + 124
    frame #2: 0x330af5e4 IMGSGX543RC2GLDriver`SubmitPacketsIfAny + 244
    frame #3: 0x3550e37a GLEngine`gliPresentViewES + 206
    frame #4: 0x35516df2 OpenGLES`-[EAGLContext presentRenderbuffer:] + 74
    frame #5: 0x39cf8596 VectorKit`-[VGLScreenCanvas didDrawView] + 54
    frame #6: 0x39cf855c VectorKit`-[VKScreenCanvas didDrawView] + 60
    frame #7: 0x39cf84a6 VectorKit`-[VKMapCanvas didDrawView] + 42
    frame #8: 0x39cef838 VectorKit`-[VKScreenCanvas onTimerFired:] + 1124
    frame #9: 0x39ced808 VectorKit`-[VKMapCanvas onTimerFired:] + 500
    frame #10: 0x39cec6a6 VectorKit`-[VKMainLoop displayTimerFired:] + 614
    frame #11: 0x35ca07a8 QuartzCore`CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long) + 160
    frame #12: 0x35ca0700 QuartzCore`CA::Display::IOMFBDisplayLink::callback(__IOMobileFramebuffer*, unsigned long long, unsigned long long, unsigned long long, void*) + 64
    frame #13: 0x37f1cfd6 IOMobileFramebuffer`IOMobileFramebufferVsyncNotifyFunc + 154
    frame #14: 0x34c935ac IOKit`IODispatchCalloutFromCFMessage + 192
    frame #15: 0x3407588a CoreFoundation`__CFMachPortPerform + 118
    frame #16: 0x340803e6 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 34
    frame #17: 0x3408038a CoreFoundation`__CFRunLoopDoSource1 + 138
    frame #18: 0x3407f20e CoreFoundation`__CFRunLoopRun + 1382
    frame #19: 0x33ff223c CoreFoundation`CFRunLoopRunSpecific + 356
    frame #20: 0x33ff20c8 CoreFoundation`CFRunLoopRunInMode + 104
    frame #21: 0x37bd133a GraphicsServices`GSEventRunModal + 74
    frame #22: 0x35f0e2b8 UIKit`UIApplicationMain + 1120
    frame #23: 0x00134928 AppName`main(argc=1, argv=0x2fd1fd08) + 116 at main.m:16
    frame #24: 0x3c1d3b20 libdyld.dylib`start + 4

Answer 1

您应该在 xcode 中设置异常断点，当应用程序崩溃时，您将可以访问 lldb 控制台以使用bt 进行回溯，这非常有帮助。