小编And*_*ast的帖子

我添加了折线,但无法在谷歌地图上添加带方向的箭头,应显示如下

当它放大时,应该显示更多箭头,如下所示

我曾尝试阅读各种博客和代码,但无法实现目标

我在下面使用了以下代码片段:

private void DrawArrowHead(MarkerOptions MO, GoogleMap mMap, LatLng from, LatLng to) {
        // obtain the bearing between the last two points
        double bearing = GetBearing(from, to);

        // round it to a multiple of 3 and cast out 120s
        double adjBearing = Math.round(bearing / 3) * 3;
        while (adjBearing >= 120) {
            adjBearing -= 120;
        }

        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);

        // Get the corresponding triangle marker from Google
        URL url;
        Bitmap image = null;

        try { …

我正在尝试将移动广告SDK集成到我的个人应用中.但是,我failed to resolve com.google.android.gms:play-services-add:11.6.0在同步模块时遇到错误:app Gradle.请帮我解决这个问题.