Using NSThread implement Timer

用內建的NSTimer時，會因view中加入以UIScrollView為base的物件時，而導致托拉View時產生Timer hold住的情形。此時我們需要自已利用 NSThread + NSThread 來實作我們自已的Timer以解決上述問題。其例子如下:

-(void)startTimer{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
[NSThread detachNewThreadSelector:@selector(launchTimer) toTarget:self withObject:nil];
[pool release];
 
-(void)launchTimer{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
[NSThread setThreadPriority:1.0];
continuePlaying = YES;
while (continuePlaying) {  // loop until cancelled
[self performSelectorOnMainThread:@selector(updateTimer) withObject:nil waitUntilDone:NO];
[NSThread sleepForTimeInterval:1.0];
}
[pool release];
}

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