解析 double 值并在 TextView 中设置

Question

对于解析数据，我使用 retrofit (gson) 库。我在解析 double 值 'position' 时遇到问题。完整的 JSON 您可以在下面看到。我解析字符串数组 'words' 很好，但具有双重值，我在 TextView 中什么也没有。谁能说出到底出了什么问题，我需要解决什么问题以及我遗漏了什么？

感谢您的帮助！

JSON

MainActivity.java

w3wNetworkFactory.w3wGetInstance().w3wGetApiCall().getPosition(w3w_API_KEY, new Words("gliders.inquest.hardly"), new Callback<PositionResponse>() {
            @Override
            public void success(PositionResponse positionResponse, Response response) {
                position_w3w.setText(Arrays.toString(positionResponse.getPosition()).replaceAll("\[|\]", ""));
                //Log.d("w3w location: ", Arrays.toString(positionResponse.getPosition()));
                String mLatLng = Arrays.toString(positionResponse.getPosition()).replaceAll("\[|\]", "");
                //Convert String to double
                double value = Double.parseDouble(mLatLng);
                //Set marker to map
                mGoogleMap.addMarker(new MarkerOptions().position(value)
                        .title("Geolocation system")
                        .snippet("Your last current location which was available!")
                        .icon(BitmapDescriptorFactory.fromResource(R.drawable.icon_location)));
            }

            @Override
            public void failure(RetrofitError error) {
                error.toString();
            }
        });

PositionResponse.java

public class PositionResponse {
    private double[] position;

    public double[] getPosition() {
        return position;
    }
}

Answer 1

尝试使用double。 long 用于整数。在您的 JSON 带有浮点数的数字中。

Answer 2

要回答关于 Google 地图的问题，您需要分离纬度和经度，并创建一个 LatLng object。我认为应该是这样的：

    @Override
                public void success(PositionResponse positionResponse, Response response) {
                    position_w3w.setText(Arrays.toString(positionResponse.getPosition()).replaceAll("\[|\]", ""));
                    //Log.d("w3w location: ", Arrays.toString(positionResponse.getPosition()));
                    String mLatLng = Arrays.toString(positionResponse.getPosition()).replaceAll("\[|\]", "");

                    String[] arrLatLng = mLatLng.split(","); //separate out lat and lon
                    LatLng latLon = new LatLng(Double.parseDouble(arrLatLng[0]), Double.parseDouble(arrLatLng[1])); //create the LatLng object

                    //Convert String to double
                    //double value = Double.parseDouble(mLatLng); this wouldn't work, you need to do both values individually
                    //Set marker to map, use LatLng object latLon
                    mGoogleMap.addMarker(new MarkerOptions().position(latLon)
                            .title("Geolocation system")
                            .snippet("Your last current location which was available!")
                            .icon(BitmapDescriptorFactory.fromResource(R.drawable.icon_location)));

                     CameraPosition cameraPosition = new CameraPosition.Builder()
                        .target(latLon).zoom(12).build();


                     mGoogleMap.animateCamera(CameraUpdateFactory
                        .newCameraPosition(cameraPosition));
                }

有关完全设置 Google 地图 API 的更多详细信息，请在此处查看我的其他答案：

解析 double 值并在 TextView 中设置

Parse double value and set in TextView

java

parsing

android

json

android-parser