摘要：//暂停layer上面的动画- (void)pauseLayer:(CALayer*)layer{ CFTimeInterval pausedTime = [layer convertTime:CACurrentMediaTime() fromLayer:nil]; layer.speed = 0.0; layer.timeOffset = pausedTime;}//继续layer上面的动画- (void)resumeLayer:(CALayer*)layer{ CFTimeInterval pausedTime = [layer timeOffset]; layer.speed ... 阅读全文

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摘要：- (NSString *)getCurrentDate{ NSDateFormatter *formatter =[[[NSDateFormatteralloc] init] autorelease]; NSDate *date = [NSDate date]; [formatter setTimeStyle:NSDateFormatterMediumStyle]; NSCalendar *calendar = [[[NSCalendaralloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease]; ... 阅读全文

摘要：from CFRunLoop ReferenceCFRunLoop monitors sources of input to a task and dispatches control when they become ready for processing.Examples of input source might include user input devices,network connection,periodic or timed-delay events,and asynchronous callbacks.Three types of objects can be moni 阅读全文