谷歌地图轨迹回放实现

先看效果:

谷歌地图轨迹播放.gif

在国内用到百度地图和高度地图都提供了比较好用的API接口, 用起来也顺手, 但是国外用到谷歌地图的时候, 就有点区别了. 要用到一个轨迹回放的功能, 找了半天,找父类, 父父类, 都发现谷歌没有提供相关API, 只提供了一个相关的类GMSMarkerLayer, 但是并没有描述比较有用的信息:

Snip20180830_5.png

然后再官网找更加具体的描述, 谷歌api参考 , 没啥有用的信息.

核心动画简单实现下, 可以参考:

NSMutableArray *latitudes = [NSMutableArray array];
    NSMutableArray *longitudes = [NSMutableArray array];
    
//for循环我只是在搞坐标, 可以忽略模型
    for (JJGPSModel *model in self.markers)
    {
        float  x = model.location.coordinate.longitude;
        
        float  y = model.location.coordinate.latitude;
        
        [longitudes addObject:[NSNumber numberWithFloat:x]];
        
        [latitudes addObject:[NSNumber numberWithFloat:y]];
        
    }
    
    CAKeyframeAnimation *horizontalAnimation = [CAKeyframeAnimation animationWithKeyPath:@"longitude"];
    horizontalAnimation.values = longitudes;
    horizontalAnimation.duration = 3;
    
    CAKeyframeAnimation *verticleAnimation = [CAKeyframeAnimation animationWithKeyPath:@"latitude"];
    verticleAnimation.values = latitudes;
    verticleAnimation.duration = 3;
    
    CAAnimationGroup *group = [[CAAnimationGroup alloc] init];
    group.animations = @[horizontalAnimation, verticleAnimation];
    group.duration = 3;
    group.repeatCount = 1;
    [carMarker.layer addAnimation:group forKey:[NSString stringWithFormat:@"%@",carMarker.description]];

记录下, 以后方便使用.