你如何判断Android设备何时有Geocoder后端服务?

根据 Google Maps docs ,“谷歌地图API提供了一个用于地理编码地址的客户端地理编码器”。所以我想说,既然你需要谷歌地图API,你就需要一个地理编码器。

    final Geocoder geocoder = new Geocoder(this);
    final String locName = "1600 Amphitheatre Parkway, Mountain View, CA";
    try {
        final List<Address> list = geocoder.getFromLocationName(locName, 1);
        if ( ! (list == null || list.isEmpty()) ) {
            final Address address = list.get(0);
            System.out.println("Geocoder backend present, (lat,lon) = (" + address.getLatitude() + ", " + address.getLongitude() + ")");
        }
        else {
            System.out.println("Geocoder backend not present");
        }
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }