How to make Thread paused or stopped when view disappear

Question

How to make Thread paused or stopped when view dispear i do that:

- (void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:(BOOL)animated];    

     [NSThread sleepForTimeInterval:10];
}

but didnt work

Why do you want this?? It's not good practice to pause a thread. — Inder Kumar Rathore, Dec 14 '12 at 16:22
As already stated several times, you really really really shouldn't be doing this. What exactly are you trying to achieve? We may be able to offer a better solution. — Mick MacCallum, Dec 14 '12 at 16:46
I have two viewcontroller, in the first view i display images from database and if the user click button bar to pass in the second view i want to stop the thread in the first view and when the user comeback in the first the thread continuous — Med Reda, Dec 15 '12 at 10:09
don't sleep thread, its not food habit .. just disable your button... — Rajneesh071, Dec 19 '12 at 06:40

score 1 · Answer 1 · answered Dec 14 '12 at 16:21

1

You should do this in viewWillDisappear but more likely you probably shouldn't do this.

answered Dec 14 '12 at 16:21

mkral

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score 1 · Answer 2 · answered Dec 14 '12 at 16:49

1

You should never sleep for longer than a few milliseconds in the UI thread. If you do the OS will kill your application, in addition to it behaving poorly.

answered Dec 14 '12 at 16:49

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score 0 · Answer 3 · answered Dec 15 '12 at 12:36

0

Do you button disable instead of NSThread sleep

[yourBtn setEnabled:NO];

When you retrieve complete data then enable it

[yourBtn setEnabled:YES]

answered Dec 15 '12 at 12:36

Rajneesh071

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How to make Thread paused or stopped when view disappear

3 Answers3