我正在尝试为NSURLSession创建一个类别（请参阅下面的代码）。第二个我尝试调用setCurrentRegion应用程序崩溃。我究竟做错了什么？或者NSURLSession不能变成一个类别，因为它使用共享实例？如果是这种情况，我怎么能将数据传递到NSURLSession中，这样如果网络连接失败，我可以重试处理CLRegion？
头文件：
#import <Foundation/Foundation.h>
#import <CoreLocation/CoreLocation.h>
@interface NSURLSession (LocationSession)
@property (nonatomic, strong) CLRegion *currentRegion;
- (void)setCurrentRegion:(CLRegion *)region;
- (CLRegion *)currentRegion;
@end
实施档案：
#import "NSURLSession+LocationSession.h"
@implementation NSURLSession (LocationSession)
- (void)setCurrentRegion:(CLRegion *)region
{
self.currentRegion = region;
}
- (CLRegion *)currentRegion
{
return self.currentRegion;
}
@end
代码调用类别
if (([self checkWifi] || [self checkWWLAN]) && [rUrl initializeRemote] && [rUrl initializeRemotePassword])
{
NSURLSessionConfiguration *sessionConfig = [NSURLSessionConfiguration defaultSessionConfiguration];
sessionConfig.allowsCellularAccess = YES;
sessionConfig.timeoutIntervalForRequest = 10.0;
NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfig];
[session setCurrentRegion:region];
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
[[session dataTaskWithURL:[NSURL URLWithString:[rUrl setDeviceTarget:[[gObject getSwitchID] stringValue] setServiceID:serviceName setAction:actionName setActionName:actionValue setActionValue:performAction]]
completionHandler:^(NSData *data,
NSURLResponse *response,
NSError *error)
{
backgroundTaskCount--;
NSString *responseString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
id content = [responseString JSONValue];
if ([data length] > 0 && error == nil)
{
NSDictionary *statusDict = [content valueForKey:responseName];
NSString *status = [statusDict valueForKey:@"OK"];
if ((NSNull *)status == [NSNull null] || status == nil)
{
status = [statusDict valueForKey:@"JobID"];
showNotifications = [[NSUserDefaults standardUserDefaults] boolForKey:@"notifyGeo"];
if (showNotifications)
{
UILocalNotification *localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:1];;
NSString *message = [[NSString alloc] init];
message = [@"Switch: " stringByAppendingString:status];
localNotification.alertBody = message;
localNotification.soundName = UILocalNotificationDefaultSoundName;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
}
NSLog(@"%@", @"Job ID Value");
NSLog(@"%d", [status intValue]);
NSLog(@"%@", @"Connection Successful");
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
if (backgroundTaskCount == 0)
{
[self endBackgroundTask];
}
}else
{
showNotifications = [[NSUserDefaults standardUserDefaults] boolForKey:@"notifyGeo"];
if (showNotifications)
{
UILocalNotification *localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:1];;
NSString *message = [[NSString alloc] init];
message = [@"Switch: " stringByAppendingString:status];
localNotification.alertBody = message;
localNotification.soundName = UILocalNotificationDefaultSoundName;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
}
NSLog(@"%@", @"Job ID Value");
NSLog(@"%@", status);
NSLog(@"%@", @"Connection Successful");
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
if (backgroundTaskCount == 0)
{
[self endBackgroundTask];
}
}
}else
if ([data length] == 0)
{
NSLog(@"%@", [error debugDescription]);
NSLog(@"%@", [[session currentRegion] identifier]);
NSLog(@"%@", [[session currentRegion] debugDescription]);
NSLog(@"%@", @"Retrying Connection");
[locationManager startMonitoringForRegion:[session currentRegion]];
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
}else
if (error != nil)
{
showNotifications = [[NSUserDefaults standardUserDefaults] boolForKey:@"notifyGeo"];
if (showNotifications)
{
UILocalNotification* localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:1];
NSString *message = [[NSString alloc] init];
NSString *status = @"Connection Failure";
message = [@"Switch: " stringByAppendingString:status];
localNotification.alertBody = message;
localNotification.soundName = UILocalNotificationDefaultSoundName;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
}
NSLog(@"%@", [error debugDescription]);
NSLog(@"%@", [[session currentRegion] identifier]);
NSLog(@"%@", [[session currentRegion] debugDescription]);
NSLog(@"%@", @"Retrying Connection");
[locationManager startMonitoringForRegion:[session currentRegion]];
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
}
}] resume];
}
}
崩溃日志：
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Triggered by Thread: 4
Last Exception Backtrace:
0 CoreFoundation 0x182e86f50 __exceptionPreprocess + 132
1 libobjc.A.dylib 0x18f3901fc objc_exception_throw + 60
2 CoreFoundation 0x182e8bc04 -[NSObject(NSObject) doesNotRecognizeSelector:] + 220
3 CoreFoundation 0x182e89930 ___forwarding___ + 912
4 CoreFoundation 0x182da95dc _CF_forwarding_prep_0 + 92
5 MyAPP 0x1001c11b4 0x100084000 + 1298868
6 MyAPP 0x1001be7c8 0x100084000 + 1288136
7 CoreLocation 0x1833e31d4 ___lldb_unnamed_function261$$CoreLocation + 712
8 CoreLocation 0x1833dedcc ___lldb_unnamed_function156$$CoreLocation + 76
9 CoreLocation 0x1833d8f3c ___lldb_unnamed_function16$$CoreLocation + 96
10 CoreFoundation 0x182e47680 __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 20
11 CoreFoundation 0x182e46838 __CFRunLoopDoBlocks + 300
12 CoreFoundation 0x182e44c28 __CFRunLoopRun + 616
13 CoreFoundation 0x182d85c20 CFRunLoopRunSpecific + 452
14 GraphicsServices 0x188a6dc0c GSEventRunModal + 168
15 UIKit 0x185eb6fdc UIApplicationMain + 1156
16 MyAPP 0x1001f9290 0x100084000 + 1528464
17 libdyld.dylib 0x18f983aa0 start + 4
Thread 0:
0 libsystem_kernel.dylib 0x000000018fa7e868 __semwait_signal_nocancel + 8
1 libsystem_c.dylib 0x000000018f9efe5c usleep$NOCANCEL + 64
2 libsystem_c.dylib 0x000000018fa1280c abort + 116
3 MyAPP 0x000000010021dedc 0x100084000 + 1679068
4 CoreFoundation 0x0000000182e872e4 __handleUncaughtException + 640
5 libobjc.A.dylib 0x000000018f3904c4 _objc_terminate() + 112
6 libc++abi.dylib 0x000000018ec53164 std::__terminate(void (*)()) + 12
7 libc++abi.dylib 0x000000018ec52d38 __cxa_rethrow + 140
8 libobjc.A.dylib 0x000000018f3903a4 objc_exception_rethrow + 40
9 CoreFoundation 0x0000000182d85c98 CFRunLoopRunSpecific + 572
10 GraphicsServices 0x0000000188a6dc08 GSEventRunModal + 164
11 UIKit 0x0000000185eb6fd8 UIApplicationMain + 1152
12 MyAPP 0x00000001001f928c 0x100084000 + 1528460
13 libdyld.dylib 0x000000018f983a9c start + 0
Thread 1:
0 libsystem_kernel.dylib 0x000000018fa65aa8 kevent64 + 8
1 libdispatch.dylib 0x000000018f969998 _dispatch_mgr_thread + 48
Thread 2:
0 libsystem_kernel.dylib 0x000000018fa65cf4 semaphore_timedwait_trap + 8
1 CoreLocation 0x00000001833d8e44 ___lldb_unnamed_function15$$CoreLocation + 356
2 CoreLocation 0x00000001833dcbd4 ___lldb_unnamed_function66$$CoreLocation + 284
3 CoreLocation 0x000000018340c974 ___lldb_unnamed_function1194$$CoreLocation + 340
4 libxpc.dylib 0x000000018fb1b2a8 _xpc_connection_call_event_handler + 64
5 libxpc.dylib 0x000000018fb1902c _xpc_connection_mach_event + 2128
6 libdispatch.dylib 0x000000018f9680a4 _dispatch_client_callout4 + 12
7 libdispatch.dylib 0x000000018f96a854 _dispatch_mach_msg_invoke + 148
8 libdispatch.dylib 0x000000018f96e450 _dispatch_queue_drain + 552
9 libdispatch.dylib 0x000000018f96a250 _dispatch_mach_invoke + 104
10 libdispatch.dylib 0x000000018f96e450 _dispatch_queue_drain + 552
11 libdispatch.dylib 0x000000018f96a4bc _dispatch_queue_invoke + 64
12 libdispatch.dylib 0x000000018f96e450 _dispatch_queue_drain + 552
13 libdispatch.dylib 0x000000018f96a4bc _dispatch_queue_invoke + 64
14 libdispatch.dylib 0x000000018f96f0f0 _dispatch_root_queue_drain + 100
15 libdispatch.dylib 0x000000018f96f4f8 _dispatch_worker_thread2 + 72
16 libsystem_pthread.dylib 0x000000018fafd6b8 _pthread_wqthread + 352
17 libsystem_pthread.dylib 0x000000018fafd548 start_wqthread + 0
Thread 3:
0 CoreFoundation 0x0000000182d9b274 CFStringFindWithOptionsAndLocale + 4880
1 Foundation 0x0000000183927798 -[NSString rangeOfString:options:range:locale:] + 488
2 MyAPP 0x00000001002c5fb8 0x100084000 + 2367416
3 MyAPP 0x00000001002c8414 0x100084000 + 2376724
4 MyAPP 0x00000001001054f8 0x100084000 + 529656
5 libdispatch.dylib 0x000000018f968010 _dispatch_call_block_and_release + 20
6 libdispatch.dylib 0x000000018f967fd0 _dispatch_client_callout + 12
7 libdispatch.dylib 0x000000018f96e4a4 _dispatch_queue_drain + 636
8 libdispatch.dylib 0x000000018f96a4bc _dispatch_queue_invoke + 64
9 libdispatch.dylib 0x000000018f96f0f0 _dispatch_root_queue_drain + 100
10 libdispatch.dylib 0x000000018f96f4f8 _dispatch_worker_thread2 + 72
11 libsystem_pthread.dylib 0x000000018fafd6b8 _pthread_wqthread + 352
12 libsystem_pthread.dylib 0x000000018fafd548 start_wqthread + 0
Thread 4 Crashed:
0 libsystem_kernel.dylib 0x000000018fa7ee74 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x000000018fafd548 start_wqthread + 0
Thread 5 name: com.apple.NSURLConnectionLoader
Thread 5:
0 libsystem_kernel.dylib 0x000000018fa65ca0 mach_msg_trap + 8
1 CoreFoundation 0x0000000182e46b70 __CFRunLoopServiceMachPort + 180
2 CoreFoundation 0x0000000182e44d00 __CFRunLoopRun + 832
3 CoreFoundation 0x0000000182d85c1c CFRunLoopRunSpecific + 448
4 Foundation 0x000000018397a424 +[NSURLConnection(Loader) _resourceLoadLoop:] + 344
5 Foundation 0x0000000183a08408 __NSThread__main__ + 996
6 libsystem_pthread.dylib 0x000000018faffe18 _pthread_body + 164
7 libsystem_pthread.dylib 0x000000018faffd70 _pthread_start + 136
8 libsystem_pthread.dylib 0x000000018fafd550 thread_start + 0
Thread 6:
0 libsystem_kernel.dylib 0x000000018fa7ee74 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x000000018fafd548 start_wqthread + 0
Thread 7:
0 libsystem_kernel.dylib 0x000000018fa7ee74 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x000000018fafd548 start_wqthread + 0
Thread 8 name: com.apple.CFSocket.private
Thread 8:
0 libsystem_kernel.dylib 0x000000018fa7e76c __select + 8
1 libsystem_pthread.dylib 0x000000018faffe18 _pthread_body + 164
2 libsystem_pthread.dylib 0x000000018faffd70 _pthread_start + 136
3 libsystem_pthread.dylib 0x000000018fafd550 thread_start + 0
更新了代码 头文件
#import <Foundation/Foundation.h>
#import <CoreLocation/CoreLocation.h>
#import <objc/runtime.h>
@interface NSURLSession (LocationSession)
@property (nonatomic, retain) CLRegion *currentRegion;
@end
实施档案
#import "NSURLSession+LocationSession.h"
static CLRegion *currentRegions;
@implementation NSURLSession (LocationSession)
- (void)setCurrentRegion:(CLRegion *)region
{
objc_setAssociatedObject(self, ¤tRegions, region, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
- (CLRegion *)currentRegion
{
return objc_getAssociatedObject(self, ¤tRegions);
}
@end