在后台运行核心位置的 ipad 应用程序崩溃

Question

我已经为此工作了几天。知道这意味着什么吗？请帮忙！ 如果需要更多信息，请告诉我

EXC_BAD_ACCESS (SIGSEGV)

线程 11 名称：调度队列：com.apple.CoreLocation.ConnectionClient.0x200826b0.events 线程 11 崩溃： 0 libdispatch.dylib 0x387b2420 dispatch_sync_f$VARIANT$mp + 0 1 CoreLocation 0x393c8088 CLConnectionClient::setCachedResponse(CLConnectionMessage*, bool (block_pointer)()) + 76 2 核心位置 0x393c8558 __setDefaultMessageHandler_onQueue_block_invoke_0 + 28 3 核心位置 0x393c7070 __setEventHandler_block_invoke_0 + 344 4 libxpc.dylib 0x367ef7e4 _xpc_connection_mach_event + 768 5 libdispatch.dylib 0x387b6524 _dispatch_mach_msg_invoke$VARIANT$mp + 120 6 libdispatch.dylib 0x387b2e8e _dispatch_queue_drain$VARIANT$mp + 78 7 libdispatch.dylib 0x387b67b2 _dispatch_mach_invoke$VARIANT$mp + 158 8 libdispatch.dylib 0x387b2e8e _dispatch_queue_drain$VARIANT$mp + 78 9 libdispatch.dylib 0x387b2dbc _dispatch_queue_invoke$VARIANT$mp + 36 10 libdispatch.dylib 0x387b2e8e _dispatch_queue_drain$VARIANT$mp + 78 11 libdispatch.dylib 0x387b2dbc _dispatch_queue_invoke$VARIANT$mp + 36 12 libdispatch.dylib 0x387b391a _dispatch_root_queue_drain + 182 13 libdispatch.dylib 0x387b3abc _dispatch_worker_thread2 + 80 14 libsystem_c.dylib 0x34097a0e _pthread_wqthread + 358 15 libsystem_c.dylib 0x340978a0 start_wqthread + 4

- (void)startupLocationManager
{
    // startup location manager for background processing
    if (self.locationManager == nil)
    {
        self.locationManager = [[CLLocationManager alloc] init];
        self.locationManager.delegate = self;
        self.locationManager.distanceFilter = kCLDistanceFilterNone;
        self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
        [self.locationManager startUpdatingLocation];

    }
}

- (void)stopLocationManager
{
    if (self.locationManager)
    {
        [self.locationManager stopUpdatingLocation];
        self.locationManager.delegate = nil;
        self.locationManager = nil;

        if (self.isInBackground == YES)
        {
            [self startupLocationManager];
        }
    }
}

Answer 1

我在其他帖子的帮助下找到了解决方案。原来是时间问题。我创建了另一种方法来重置我的位置管理器，并延迟调用它。这解决了一切。希望这对您也有帮助。

- (void)stopLocationManager
{
    if (locationManager)
    {
        [locationManager stopUpdatingLocation];
        [self performSelector:@selector(discardLocationManager) withObject:nil afterDelay:0.1];
    }
}

- (void) discardLocationManager
{
    locationManager.delegate = nil;
    locationManager = nil;

    if (self.isRestart == YES)
    {
        [self performSelector:@selector(startupLocationManager) withObject:nil afterDelay:0.1];
    }
}