AndroidGoogleMapsv2路由显示路由不起作用

代码中生成的网址:" https://maps.googleapis.com/maps/api/directions/json?waypoints=optimize:true|-23.3246,-51.1489|-23.3206,-51.1459|-23.2975, -51.2007&sensor = false "错了.

您的网址应如下所示:" https://maps.googleapis.com/maps/api/directions/json?origin=-23.3246,-51.1489&destination=-23.2975,-51.2007&%20waypoints=optimize:true|-23.3246 ,-51.1489 | -23.3206,-51.1459 | -23.2975,-51.2007&sensor = false "

这是生成url的代码:

  private String getMapsApiDirectionsUrl(LatLng Office, LatLng home) {
       String waypoints = "waypoints=optimize:true|"
            + Office.latitude + "," + Office.longitude
            + "|" + "|" +  home.latitude + ","
            + home.longitude;
    String OriDest = "origin="+Office.latitude+","+Office.longitude+"&destination="+home.latitude+","+home.longitude;

    String sensor = "sensor=false";
    String params = OriDest+"&%20"+waypoints + "&" + sensor;
    String output = "json";
    String url = "https://maps.googleapis.com/maps/api/directions/"
            + output + "?" + params;
    return url;
}