我想问一些关于iPhone开发的简单但重要的问题。如果我们必须在后台执行任务,当后台任务完成后,我们将更新UI,为此,我们可以使用NSThreads、NSOperations或(performSelector)performSelectorInBackgroundThread.所有这些之间的区别是什么,它们将如何影响我的应用程序的性能。[self getData];
Please explain as i dont know the difference be
.> Program received signal SIGSEGV, Segmentation fault. 0x080660c4 in> #0 0x080660c4 in sys_pthreads_create ()
> #1 0x08049ee4 in th_start_thread_name (thread(gdb) p (*sys_pthreads_create)(&thr, 0, thread,