// 开启定时器
- (void)startTimer { if (!_timer) { _timer = [NSTimer timerWithTimeInterval:_timeInterval target:self selector:@selector(timerMethod) userInfo:nil repeats:YES]; [[NSRunLoop currentRunLoop] addTimer:_timer forMode:NSRunLoopCommonModes]; } }
/// 定时器方法
-
(void)timerMethod { _count++; if (_count == _contents.count) { _count = 0; } /// 两次动画实现类似UIScrollView的滚动效果，控制坐标和隐藏状态 [UIView animateWithDuration:_scrollTimeInterval animations:^{ _scrollLbl.frame = CGRectMake(0, -Height, Width, Height); } completion:^(BOOL finished) { _scrollLbl.hidden = YES; _scrollLbl.frame = CGRectMake(0, Height, Width, Height); _scrollLbl.hidden = NO; [UIView animateWithDuration:_scrollTimeInterval animations:^{ _scrollLbl.text = [self getCurrentContent]; _scrollLbl.frame = CGRectMake(0, 0, Width, Height); } completion:^(BOOL finished) {
}];}]; }