目标C-在主线程上调用类方法？

[SomeClass performSelectorOnMainThread:staticMethod withObject:nil];

[SomeClass performSelectorOnMainThread:staticMethod withObject:nil waitUntilDone:NO];

performSelectorOnMainThread:withObject:waitUntilDone:

NSObject

NSObject

dispatch_async(dispatch_get_main_queue(), ^{
  [SomeClass doClassyThingWithObject:object1 andDiddleyDoo:foo];
});

NSInvocationOperation *operation = [[NSInvocationOperation alloc] initWithTarget:[SomeClass class] selector:@selector(SomeClass) object:nil];
[[NSOperationQueue mainQueue] addOperation:operation];