2017-11-13 11:39:04.348973+0800 PlantsAndFlowers[11262:2146383] [reports] Main Thread Checker: UI API called on a background thread: -[UIApplication statusBarOrientation]
PID: 11262, TID: 2146383, Thread name: (none), Queue name: BaseOperatorService, QoS: 0
Backtrace:
4 PlantsAndFlowers 0x0000000100bb4c0c __25-[MOBFBaseService _putAd]_block_invoke + 536
5 libdispatch.dylib 0x000000010104149c _dispatch_call_block_and_release + 24
6 libdispatch.dylib 0x000000010104145c _dispatch_client_callout + 16
7 libdispatch.dylib 0x0000000101050110 _dispatch_queue_serial_drain + 692
8 libdispatch.dylib 0x00000001010449a4 _dispatch_queue_invoke + 332
9 libdispatch.dylib 0x0000000101051104 _dispatch_root_queue_drain_deferred_wlh + 424
10 libdispatch.dylib 0x0000000101058100 _dispatch_workloop_worker_thread + 652
11 libsystem_pthread.dylib 0x0000000182adefd0 _pthread_wqthread + 932
12 libsystem_pthread.dylib 0x0000000182adec20 start_wqthread + 4
造成原因是因为原本 需要在主线程执行的代码 被放在了子线程里边
解决方法：在scheme 里边取消主线程检测 （如下图 不建议使用） 或者修改代码 把出问题的代码放在主线程里边即可
注：不喜勿喷！！！
