思路:
1.创建一个单例
+ (instancetype)shareManager { static CCPaomaView *pModel = nil; static dispatch_once_t once; dispatch_once(&once, ^{ pModel = [[CCPaomaView alloc]initWithFrame:CGRectMake(0, 0, KScreenWidth, 0.0468 *KScreenHeight)]; }); return pModel; }
2.把接收的数据存在本地的 plist,不适用于大量数据,每次读取第一个数据,读取完成删除整个 plist,再把剩下的重新存进 plist
3.根据动画代理,监听动画执行结束,将动画实例置为 nil
- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag{ NSLog(@"%@",[self.paomaLabel.layer animationForKey:@"paoMaDeng"]); if ([self.paomaLabel.layer animationForKey:@"paoMaDeng"] == anim) { //移除第一组数据 [_array removeObjectAtIndex:0]; //移除整个 plist [CCPaomaModel removePaomaPlist]; //重新写入 [_array writeToFile:[CCPaomaModel filename] atomically:YES]; //动画停止之后,将实例置为 nil _pmAniamtion = nil; //数组为空之后移除跑马灯 if (_array.count > 0) { [self showPaomaView:self.superview]; }else{ self.hidden = YES; [self removeFromSuperview]; } NSLog(@"%@",self.array); } }
4.判断动画实例是否为空,使得切换界面,跑马灯继续,而不是重新开始
- (void)paomaAniamtion:(CGFloat)count{ //判断动画实例存不存在,存在继续,不存在即创建 if (_pmAniamtion == nil) { _pmAniamtion = [CABasicAnimation animation]; _pmAniamtion.keyPath = @"transform.translation.x"; CGFloat W = CGRectGetWidth(_paomaLabel.bounds); _pmAniamtion.fromValue = @(W); _pmAniamtion.toValue = @(-W); _pmAniamtion.duration = _aniTime; _pmAniamtion.repeatCount = count; _pmAniamtion.removedOnCompletion = NO; //动画结束不移除 _pmAniamtion.fillMode = kCAFillModeForwards; //动画结束会保持结束的状态 _pmAniamtion.delegate = self; //设置代理 [_paomaLabel.layer addAnimation:_pmAniamtion forKey:@"paoMaDeng"]; }else{ _pmAniamtion.repeatCount = count; } }
5.切换界面,暂停、恢复动画
#pragma mark -- 界面出现、消失,创建、恢复、暂停动画 - (void)viewWillAppear:(BOOL)animated { [_paomaView showPaomaView:self.view]; [_paomaView resumeAnimation]; } - (void)viewWillDisappear:(BOOL)animated { [_paomaView pauseAniamtion]; }
话不多说,github 见代码
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。