iOS NSThread sleep ?

[nightwar00]

Hi all,
I have a little problem. I need to pause my program for 2 seconds.
But when i use : [NSThread sleepForTimeInterval:2]; the actions beforedon't work :

// some actions (1)
[NSThread sleepForTimeInterval:2];
//some action (2)

the actions(1) work after the pause i don't know why ??. the behaviour of the application is :

[NSThread sleepForTimeInterval:2];
//some actions(1)
//some actions (2)

how can i have the first behaviour?

thanks to any answer...

 

[kainjow]

What are these "actions"? Some of them may not happen until the next run loop interation which won't happen until the thread wakes up.

 

[nightwar00]

the actions are actually the following :
-display a UITextView
-perform an animation

how can i display the UITextView ("loading") and pause the system 2s and then remove the UITextView ??

 

[kainjow]

Sounds like you're simulating an actual loading process? Why?

I don't think there's a direct way to force the UI to refresh. On Mac OS X you can but the equivalent method in UIKit is gone.

You might be able to simulate this by using a timer and UIApplication's beginIgnoringInteractionEvents and endIgnoringInteractionEvents methods, but that's just from a quick glance at the docs.

 

[nightwar00]

yes i want a loading process but not at the begining of the application.
i need to pause the application for 2s because another thread need to read a value before the actions (2) in my code below.

i juste want to tell the user to wait by the text "loading" and freeze the system for 2seconds...

 

[PhoneyDeveloper]

Sleeping like this is a bad idea. If you are using a sleep time for thread synchronization that is also a bad idea. Instead you should use some kind of correct thread synchronization or you should use a performSeledtor:withObject:afterDelay, or an NSTimer.

You could push a modal view controller and pop it when required.

 

[nightwar00]

thanks all i 'm going to use NSTimer !