私のアプリケーションは iOS6 では正常に動作していましたが、MKMapView にオーバーレイを追加すると、アクセスが悪いために iOS 7 でクラッシュします。私のコードは次のとおりです。
MKPolyline *polyline = [[MKPolyline alloc] init];
polyline = [MKPolyline polylineWithCoordinates:coordinates count:numberOfSteps];
[directionMap addOverlay:polyline];
これはクラッシュ ログ (lldb) です bt *
thread #51: tid = 0x1cc5, 0x38755f8c libdispatch.dylib`dispatch_retain$VARIANT$mp + 8, stop reason = EXC_BAD_ACCESS (code=1, address=0x0)
frame #0: 0x38755f8c libdispatch.dylib`dispatch_retain$VARIANT$mp + 8
frame #1: 0x3598dbc8 VectorKit`-[VKRasterOverlayTileSource init] + 176
frame #2: 0x358cfd24 VectorKit`-[VKMapModel _rasterOverlayTileSourceForLevel:] + 308
frame #3: 0x358d0226 VectorKit`-[VKMapModel addRasterOverlay:] + 46
frame #4: 0x2f068dfe MapKit`-[MKOverlayContainerView _insertDrawable:forOverlay:atIndex:level:] + 1010
frame #5: 0x2f06752e MapKit`-[MKOverlayContainerView _configureAndAddDrawable:forOverlay:level:] + 326
frame #6: 0x2f0676ac MapKit`-[MKOverlayContainerView _considerAddingDrawable:inAddRect:level:] + 372
frame #7: 0x2f067cce MapKit`-[MKOverlayContainerView addOverlay:level:] + 246
frame #8: 0x001394c8 Falcon`-[GetDirectionVC showRouteFrom:to:](self=0x19742820, _cmd=0x001fa466, f=CLLocationCoordinate2D at 0x04f9ec2c, t=CLLocationCoordinate2D at 0x04f9ec1c) + 956 at GetDirectionVC.m:226
frame #9: 0x001390ee Falcon`-[GetDirectionVC loadLocations](self=0x19742820, _cmd=0x001fa458) + 1314 at GetDirectionVC.m:173
frame #10: 0x2e876e26 Foundation`__NSThread__main__ + 1062
frame #11: 0x38891c1c libsystem_pthread.dylib`_pthread_body + 140
frame #12: 0x38891b8e libsystem_pthread.dylib`_pthread_start + 102
(lldb)