检测performSelectorInBackground的结束:withObject:

Question

我的iOS应用程序中有异步服务器请求:

[self performSelectorInBackground:@selector(doSomething) withObject:nil];

如何检测此操作的结束？

Answer 1

在doSomething方法结束时拨打电话？!

- (void)doSomething {
    // Thread starts here

    // Do something

    // Thread ends here
    [self performSelectorOnMainThread:@selector(doSomethingDone) withObject:nil waitUntilDone:NO];
}