android - Genymotion - 从经度和纬度获取地址

Question

我使用此代码获取我当前的地址:

public String getAdressFromLongLat(double lati, double longi) {
    List<Address> addresses = new ArrayList<Address>();
    Geocoder geocoder = new Geocoder(mContext,Locale.getDefault());

    try {
        addresses = geocoder.getFromLocation(lati, longi, 1);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        return null;
    }
    if(addresses==null || addresses.size()<=0) {
        return null;
    }
    String address = addresses.get(0).getAddressLine(0);
    String city = addresses.get(0).getAddressLine(1);
    return address + "/;/" + city;
}

但它每次都返回 null。我没有真正的设备，所以我在 genymotion 模拟器中进行测试。这是问题吗？还是代码有问题？

-> 我用调试器找到了问题: 地址不为空，但大小为 0，为什么？ :(

Answer 1

Genymotion 可能不支持地址查找。来自official documentation :

Note: Address lookup requires a backend service that is not included in the core Android framework. If this backend service is not available, Geocoder.getFromLocation() returns an empty list. The helper method isPresent(), available in API level 9 and later, checks to see if the backend service is available.

尝试调用 Geocoder.isPresent()可以肯定。