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Suspends the current thread for the specified number of milliseconds. Suspends the current thread for the specified amount of time.
For example when the threadA need to wait for a certain amount of time you can put the thread in wait state and start a timer task that after a certain amount of time (interval ) call notify and wake up the ThreadA that go ahead, this could be an alternative .
sleep() method can be used to pause the execution of current thread for specified time in milliseconds. The argument value for milliseconds can't be negative, else it throws IllegalArgumentException .
Thread. sleep causes the current thread to suspend execution for a specified period. This is an efficient means of making processor time available to the other threads of an application or other applications that might be running on a computer system.
Yes, there's +[NSThread sleepForTimeInterval:]
(Just so you know for future questions, Objective-C is the language itself; the library of objects (one of them at least) is Cocoa.)
Sleeping for one second in Java:
Thread.sleep(1000);
Sleeping for one second in Objective C:
[NSThread sleepForTimeInterval:1.0f];
Why are you sleeping? When you sleep, you are blocking the UI and also any background URL loading not in other threads (using the NSURL asynchronous methods still operates on the current thread).
Chances are what you really want is performSelector:withObject:AfterDelay. That's a method on NSObject you can use to call a method at some pre-determined interval later - it schedules a call that will be performed at a later time, but all of the other stuff the thread handles (like UI and data loads) will still continue.
Of course, you could also use the standard Unix sleep() and usleep() calls, too. (If writing Cocoa, I'd stay with the [NSThread sleepForTimeInterval:], however.)
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