Error: java.lang.IllegalStateException: no included points

问题

I am getting this error when trying to search a place on map. I tried other resolutions when searching, but no luck.

java.lang.IllegalStateException: no included points

on this line: LatLngBounds.Builder builder = new LatLngBounds.Builder();

The code I am using:

try {
                            JSONObject jsonObject = new JSONObject(response.body().toString());
                            JSONArray jsonArray = jsonObject.getJSONArray("routes");

                            for (int i = 0; i < jsonArray.length(); i++) {
                                JSONObject route = jsonArray.getJSONObject(i);
                                JSONObject poly = route.getJSONObject("overview_polyline");
                                String polyline = poly.getString("points");
                                polyLineList = decodePoly(polyline);
                            }

                            // Adjusting Bounds
                            LatLngBounds.Builder builder = new LatLngBounds.Builder();
                            for (LatLng latLng:polyLineList) {
                                builder = builder.include(latLng);
                            }
                            LatLngBounds bounds = builder.build();
                            CameraUpdate mCameraUpdate = CameraUpdateFactory.newLatLngBounds(bounds, 2);
                            mMap.animateCamera(mCameraUpdate);


private List decodePoly(String encoded) {

    List poly = new ArrayList();
    int index = 0, len = encoded.length();
    int lat = 0, lng = 0;

    while (index < len) {
        int b, shift = 0, result = 0;
        do {
            b = encoded.charAt(index++) - 63;
            result |= (b & 0x1f) << shift;
            shift += 5;
        } while (b >= 0x20);
        int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
        lat += dlat;

        shift = 0;
        result = 0;

        do {
            b = encoded.charAt(index++) - 63;
            result |= (b & 0x1f) << shift;
            shift += 5;
        } while (b >= 0x20);
        int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
        lng += dlng;

        LatLng p = new LatLng((((double) lat / 1E5)), (((double) lng / 1E5)));
        poly.add(p);
    }

    return poly;
}

Image:

回答1:

Your current code is just using the last route in the list, but it is more common to use the first route in the list, rather than one of the alternate routes.

In order to get the decoded polyline list, you just need to look in the first element of the routes JSONArray, as you can see in this working example.

So, remove the for loop and get overview_polyline from the first element:

JSONArray routeArray = jsonObject.getJSONArray("routes");
JSONObject routes = routeArray.getJSONObject(0);
JSONObject overviewPolylines = routes.getJSONObject("overview_polyline");
String encodedString = overviewPolylines.getString("points");
polyLineList = decodePoly(encodedString);

That should take care of the most common case, where you successfully get data from the request.

Just to be on the safe side, anytime you are dealing with a LatLngBounds.Builder, you should ensure that you have a non-empty data set.
This will ensure that you never get the IllegalStateException:

if (!polyLineList.isEmpty()) {
    // Adjusting Bounds
    LatLngBounds.Builder builder = new LatLngBounds.Builder();
    for (LatLng latLng:polyLineList) {
      builder = builder.include(latLng);
    }
    LatLngBounds bounds = builder.build();
    CameraUpdate mCameraUpdate = CameraUpdateFactory.newLatLngBounds(bounds, 2);
    mMap.animateCamera(mCameraUpdate);
}

来源：https://stackoverflow.com/questions/47102127/error-java-lang-illegalstateexception-no-included-points