iOS 循环线程的实现

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,
0), ^{
NSLog(@"--------");
[NSTimer
scheduledTimerWithTimeInterval:1
target:self
selector:@selector(test:)
userInfo:nil
repeats:YES];
while (!complete) {
[[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]];
}
});

停止

//complete ＝ YES;