PHILIPS HUE APPLE SDK 的问题
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【中文标题】PHILIPS HUE APPLE SDK 的问题【英文标题】：Issue with PHILIPS HUE APPLE SDK 【发布时间】：2015-07-01 14:04:54 【问题描述】：我刚刚写了Five 行代码，应用程序崩溃了。我检查了很多次，但我无法跟踪代码中的错误。
我已经添加了框架..没有警告没有错误但是为什么该死的应用程序崩溃了：
#import "ViewController.h"
#import <HueSDK_ios/HueSDK.h>
@interface ViewController ()
@property (strong, nonatomic) PHHueSDK *phHueSDK;
@property (nonatomic, strong) PHBridgeSearching *bridgeSearch;
@end
@implementation ViewController
- (void)viewDidLoad
[super viewDidLoad];
self.phHueSDK = [[PHHueSDK alloc] init]; //Line 1
[self.phHueSDK enableLogging:YES]; //Line 2
[self.phHueSDK startUpSDK]; //Line 3
self.bridgeSearch = [[PHBridgeSearching alloc] initWithUpnpSearch:YES andPortalSearch:YES andIpAdressSearch:YES]; //Line 4
// Start search for bridges
[self.bridgeSearch startSearchWithCompletionHandler:^(NSDictionary *bridgesFound)
// Search is complete, handle results (dictionary contains IP and mac addresses of bridges found)
]; Line 5
@end
崩溃日志为...
2015-04-23 17:15:58.750 FreshHUE[8298:161234] -[__NSCFString objectFromJSONString]: unrecognized selector sent to instance 0x7fb9fa547d60
2015-04-23 17:15:58.849 FreshHUE[8298:161234] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFString objectFromJSONString]: unrecognized selector sent to instance 0x7fb9fa547d60'
*** First throw call stack:
(
0 CoreFoundation 0x0000000106512c65 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x00000001061a9bb7 objc_exception_throw + 45
2 CoreFoundation 0x000000010651a0ad -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x000000010647013c ___forwarding___ + 988
4 CoreFoundation 0x000000010646fcd8 _CF_forwarding_prep_0 + 120
5 FreshHUE 0x0000000105c01cdd __38-[PHBridgeSearching startPortalSearch]_block_invoke + 332
6 FreshHUE 0x0000000105c006ac -[PHHttpRequester connectionDidFinishLoading:] + 101
7 CFNetwork 0x000000010859c0bc __65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke + 69
8 CFNetwork 0x000000010859c060 -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] + 199
9 CFNetwork 0x000000010859c1c7 -[NSURLConnectionInternal _withActiveConnectionAndDelegate:] + 48
10 CFNetwork 0x000000010846b757 ___ZN27URLConnectionClient_Classic26_delegate_didFinishLoadingEU13block_pointerFvvE_block_invoke + 107
11 CFNetwork 0x0000000108538de1 ___ZN27URLConnectionClient_Classic18_withDelegateAsyncEPKcU13block_pointerFvP16_CFURLConnectionPK33CFURLConnectionClientCurrent_VMaxE_block_invoke_2 + 273
12 CFNetwork 0x0000000108456a26 _ZN19RunloopBlockContext13_invoke_blockEPKvPv + 72
13 CoreFoundation 0x0000000106419354 CFArrayApplyFunction + 68
14 CFNetwork 0x00000001084568e7 _ZN19RunloopBlockContext7performEv + 133
15 CFNetwork 0x0000000108456726 _ZN17MultiplexerSource7performEv + 256
16 CFNetwork 0x000000010845653c _ZN17MultiplexerSource8_performEPv + 72
17 CoreFoundation 0x0000000106446431 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
18 CoreFoundation 0x000000010643c2fd __CFRunLoopDoSources0 + 269
19 CoreFoundation 0x000000010643b934 __CFRunLoopRun + 868
20 CoreFoundation 0x000000010643b366 CFRunLoopRunSpecific + 470
21 Foundation 0x0000000105d5ef92 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 275
22 FreshHUE 0x0000000105c00fc7 __32-[PHBridgeSearching startSearch]_block_invoke + 253
23 libdispatch.dylib 0x0000000108cd0186 _dispatch_call_block_and_release + 12
24 libdispatch.dylib 0x0000000108cef614 _dispatch_client_callout + 8
25 libdispatch.dylib 0x0000000108cd9552 _dispatch_root_queue_drain + 1768
26 libdispatch.dylib 0x0000000108cdab17 _dispatch_worker_thread3 + 111
27 libsystem_pthread.dylib 0x00000001090746cb _pthread_wqthread + 729
28 libsystem_pthread.dylib 0x00000001090724a1 start_wqthread + 13
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
更新问题
当我将第 4 行更改为（将门户搜索设置为否）时，我的应用运行良好。但我想要门户搜索，为什么会发生这种情况
self.bridgeSearch = [[PHBridgeSearching alloc] initWithUpnpSearch:YES andPortalSearch:NO andIpAdressSearch:YES]; //Line 4
【问题讨论】：
以上代码没有崩溃点。显示该completionHandler 块。我认为那里有错误。 完成块中什么都没有...我只写了这么多代码 【参考方案1】：问题
使用Phillips Hue IOS Stack 时，我得到一个无法识别的选择器。有人可以帮忙吗？
2015-04-23 17:15:58.750 FreshHUE[8298:161234] -[__NSCFString objectFromJSONString]: unrecognized selector sent to instance 0x7fb9fa547d60
2015-04-23 17:15:58.849 FreshHUE[8298:161234] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFString objectFromJSONString]: unrecognized selector sent to instance 0x7fb9fa547d60'
*** First throw call stack:
(
0 CoreFoundation 0x0000000106512c65 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x00000001061a9bb7 objc_exception_throw + 45
2 CoreFoundation 0x000000010651a0ad -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x000000010647013c ___forwarding___ + 988
4 CoreFoundation 0x000000010646fcd8 _CF_forwarding_prep_0 + 120
5 FreshHUE 0x0000000105c01cdd __38-[PHBridgeSearching startPortalSearch]_block_invoke + 332
6 FreshHUE 0x0000000105c006ac -[PHHttpRequester connectionDidFinishLoading:] + 101
7 CFNetwork 0x000000010859c0bc __65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke + 69
8 CFNetwork 0x000000010859c060 -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] + 199
9 CFNetwork 0x000000010859c1c7 -[NSURLConnectionInternal _withActiveConnectionAndDelegate:] + 48
10 CFNetwork 0x000000010846b757 ___ZN27URLConnectionClient_Classic26_delegate_didFinishLoadingEU13block_pointerFvvE_block_invoke + 107
11 CFNetwork 0x0000000108538de1 ___ZN27URLConnectionClient_Classic18_withDelegateAsyncEPKcU13block_pointerFvP16_CFURLConnectionPK33CFURLConnectionClientCurrent_VMaxE_block_invoke_2 + 273
12 CFNetwork 0x0000000108456a26 _ZN19RunloopBlockContext13_invoke_blockEPKvPv + 72
13 CoreFoundation 0x0000000106419354 CFArrayApplyFunction + 68
14 CFNetwork 0x00000001084568e7 _ZN19RunloopBlockContext7performEv + 133
15 CFNetwork 0x0000000108456726 _ZN17MultiplexerSource7performEv + 256
16 CFNetwork 0x000000010845653c _ZN17MultiplexerSource8_performEPv + 72
17 CoreFoundation 0x0000000106446431 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
18 CoreFoundation 0x000000010643c2fd __CFRunLoopDoSources0 + 269
19 CoreFoundation 0x000000010643b934 __CFRunLoopRun + 868
20 CoreFoundation 0x000000010643b366 CFRunLoopRunSpecific + 470
21 Foundation 0x0000000105d5ef92 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 275
22 FreshHUE 0x0000000105c00fc7 __32-[PHBridgeSearching startSearch]_block_invoke + 253
23 libdispatch.dylib 0x0000000108cd0186 _dispatch_call_block_and_release + 12
24 libdispatch.dylib 0x0000000108cef614 _dispatch_client_callout + 8
25 libdispatch.dylib 0x0000000108cd9552 _dispatch_root_queue_drain + 1768
26 libdispatch.dylib 0x0000000108cdab17 _dispatch_worker_thread3 + 111
27 libsystem_pthread.dylib 0x00000001090746cb _pthread_wqthread + 729
28 libsystem_pthread.dylib 0x00000001090724a1 start_wqthread + 13
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
回答
在大多数情况下，答案与原因码中的信息有关。对于这种情况，所述原因是：
'-[__NSCFString objectFromJSONString]: unrecognized selector sent to instance 0x7fb9fa547d60'
您的代码不会立即调用它。在这种情况下，我相信它可能会发生，因为您的事件生命周期不正确。我注意到您的模式与示例应用程序中显示的模式不同。我认为您需要交换第 2 行和第 3 行。您正在尝试在启动 SDK 之前设置它的属性。
我还将整个 SDK 启动序列移至 App Delegate 类，以防内部发生任何竞争情况。您用于搜索的两行似乎与QuickStart 示例应用程序内联。您还可以尝试运行示例应用程序以查看您的系统是否存在任何问题，或者它甚至可能是存储库中的错误。尝试如上所述调整架构，它应该会进一步隔离问题。
更新：
评论似乎支持 SDK 中可能发生内部竞争条件的结论。我建议按照 AppDelegate 的说明移动属性和前三行，看看当 portalSearch 设置为 YES 时这是否有效。
【讨论】：
我按照这里的顺序..developers.meethue.com/documentation/apple-api-guide 当将 portalSearch 设置为 NO .. 然后我的代码工作正常 我换了行，但没有任何反应......示例应用在我的系统上运行良好 @RahulMishra 只是好奇您是否通过将 SDK 逻辑移至 AppDelegate 得到不同的结果？ 当我将代码写入应用委托时，也会发生同样的事情【参考方案2】：在 PHILIPS 提供的示例应用程序中度过一整夜后，我能够找到错误。
在 PHILIPS HUE 的官方文档中他们没有提到我们必须添加 -ObjC 链接器标志
添加 -ObjC 链接器标志解决了我的问题
【讨论】：
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