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How to fix sleep on objective C sdk 4.0?

Answer 1

A:

You may just declare it's prototype in the file where you are using it:

unsigned int sleep( unsigned int seconds );

Or simply include <unistd.h>

Macmade 2010-07-20 15:06:47

if he has to declare the prototype, he's missing a header. This is a band-aid.

Joshua Weinberg 2010-07-20 16:24:58

You should *never* declare a prototype to enable the use of the function. At best, it means you haven't included the right header. At worst, it indicates use of private interfaces that may cause crashes or rejections. Or it is a good way to introduce a bug if you get the prototype wrong.

bbum 2010-07-20 16:42:59

it doesn't crash, it works fine ;) thanks any way

Saikios 2010-07-21 01:17:10

Wow...just....wow...

Joshua Weinberg 2010-07-21 03:27:03

@Joshua Weinberg: well look at it this way, if you are like me, apps that put up unnecessary splash screens don't stay installed for long so this shouldn't be overly bothersome.

JeremyP 2010-07-21 09:52:37

@Saikios: the correct header for sleep(3) is unistd.h. http://developer.apple.com/mac/library/documentation/Darwin/Reference/ManPages/man3/sleep.3.html

JeremyP 2010-07-21 09:54:43

I would never install this app, but, if pepople like girls not wearing a lot of clothes they are going to wait 1 second :P, and probably more too :P

Saikios 2010-07-21 14:45:48

Answer 2

+6 A:

Make sure you're including the right headers. <Foundation/Foundation.h> has all the stuff you should need, if you're not in Obj-C code though, include <unistd.h> and everything should be happy.

Joshua Weinberg 2010-07-20 15:15:05

Answer 3

+2 A:

How about using

[NSThread sleepForTimeInterval:0.1];

or something instead?

Woody 2010-07-20 15:20:26

Answer 4

A:

Why are you sleeping? That is the worst possible place to sleep; if you application does not return from applicationDidFinishLaunching, it will be killed. And you are making that take a second longer!!

Instead, in applicationDidFinishLaunching put up the same image, then dismiss it after a delay. That way your application can continue to initialize even though the splash screen is still displayed...

Kendall Helmstetter Gelner 2010-07-20 18:32:58

It was on a manual :(

Saikios 2010-07-21 01:17:50

Answer 5

A:

Here's how to fix your problem.

If you have:

sleep(1);

change it to

// sleep(1);

If you really must force the user to watch your advertising instead of getting on with using your app, which is what they really want to do, display your splash screen then use an NSTimer event to remove it. That means that you can do useful stuff while it's there.

JeremyP 2010-07-21 09:43:35

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How to fix sleep on objective C sdk 4.0?

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