objective-c NSTimer 定时器

-(void)initTimer
{
    //时间间隔
    NSTimeInterval timeInterval =3.0 ;
    //定时器    repeats 表示是否需要重复，NO为只重复一次
    NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:timeInterval target:self selector:@selector(mobileAnimation) userInfo:nil repeats:YES];
}