HarDWare Model: iPhone5,2Exception Type: 00000020Exception Codes: 0x000000008badf00dHighlighted Thread: 3Application Specific information:MyApp[1369] has active assertions beyond permitted time: {(<BKProcessAssertion: 0x175ca7d0> IDentifIEr: Called by MyApp,from -[AppDelegate applicationDIDEnterBackground:] process: MyApp[1369] permittedBackgroundDuration: 180.000000 reason: finishTask owner pID:1369 preventSuspend preventIDleSleep preventSuspendOnSleep )}
线程3:
Thread 3 name: com.apple.NSURLConnectionLoaderThread 3:0 libsystem_kernel.dylib 0x3937ea50 mach_msg_trap + 201 libsystem_kernel.dylib 0x3937e848 mach_msg + 362 CoreFoundation 0x2e61261c __CFRunLoopServiceMachPort + 1523 CoreFoundation 0x2e610d3c __CFRunLoopRun + 7884 CoreFoundation 0x2e57b7a4 CFRunLoopRunspecific + 5205 CoreFoundation 0x2e57b586 CFRunLoopRunInMode + 1026 Foundation 0x2efbb23c +[NSURLConnection(Loader) _resourceLoadLoop:] + 3167 Foundation 0x2f030a0a __NSThread__main__ + 10588 libsystem_pthread.dylib 0x393f8956 _pthread_body + 1389 libsystem_pthread.dylib 0x393f88c6 _pthread_start + 9810 libsystem_pthread.dylib 0x393f6ae4 thread_start + 4
我的应用程序在“applicationDIDEnterBackground”使用此代码的后台任务:
// 10min background taskuibackgroundtaskIDentifIEr myLongTask;myLongTask = [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:^{ [locationMgrInstance timerSet]; }];// cell change [locationMgrInstance startMonitoringSignificantLocationChanges];
它适用于iOS 6 ……但是! iOS 7在180秒后抛出断言.
救命!
查看Apple iOS App Programming Guide Background Execution Guide中的后台执行和多任务部分.
此外,您可以检查[[UIApplication sharedApplication] backgroundTimeRemaining] – 在iOS 6上,此时间为10分钟.在iOS 7中它从3分钟开始 – 这就是为什么你在180秒后超时的原因.您需要重新评估您的背景策略以处理新限制.
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