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POFrozen uptime on iOS / iPhone
 

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    <p>Would someone know why I'm experiencing weird uptime with the following method?</p> <pre><code>NSProcessInfo *processInfo = [NSProcessInfo processInfo]; NSTimeInterval systemUptime = [processInfo systemUptime]; </code></pre> <p>For first minutes, everything seems fine, but when I come back on the app hours or days laters the uptime is still the same : 30min, or 1h34... it seems to freeze at a random moment. Mostly on iPhone 4 (rarely on Simulator or iPad)</p> <p>It could be linked to my way of showing it:</p> <pre><code>+ (NSTimeInterval)uptime:(NSNumber **)days hours:(NSNumber **)hours mins:(NSNumber **)mins { NSProcessInfo *processInfo = [NSProcessInfo processInfo]; //START UPTIME/////// NSTimeInterval systemUptime = [processInfo systemUptime]; // Get the system calendar NSCalendar *sysCalendar = [NSCalendar currentCalendar]; // Create the NSDates NSDate *date = [[NSDate alloc] initWithTimeIntervalSinceNow:(0-systemUptime)]; unsigned int unitFlags = NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit; NSDateComponents *c = [sysCalendar components:unitFlags fromDate:date toDate:[NSDate date] options:0]; //NSString *uptimeString = [NSString stringWithFormat:@"%dd %dh %dmin", [c day],[c hour],[c minute]]; *days = [NSNumber numberWithInt:[c day]]; *hours = [NSNumber numberWithInt:[c hour]]; *mins = [NSNumber numberWithInt:[c minute]]; [date release]; //END UPTIME//////// return systemUptime; } </code></pre> <p>And later in the code:</p> <pre><code>NSNumber *uptimeDays, *uptimeHours, *uptimeMins; [CJGDevice uptime:&amp;uptimeDays hours:&amp;uptimeHours mins:&amp;uptimeMins]; NSString *uptimeString = [NSString stringWithFormat:@"%@d %@h %@min", [uptimeDays stringValue], [uptimeHours stringValue], [uptimeMins stringValue]]; </code></pre> <p>EDIT: after 3 days recording the results on iPad and iPhone I can see that this uptime is wrong, the time is running too slowly, the more we wait the more it's obvious that it's late</p>
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    1. CO**32min ago** it showed **2d 12h 21min** on an iPhone4, now it's showing **2d 12h 35min**
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