I am trying to build an application where I use JSON to get the current latitude and longitude and also the address from it, but as soon as I click on the button I get an error in my log:
E/Volley: [5807] BasicNetwork.performRequest: Unexpected response code 400 for https://maps.googleapis.com/maps/api/geocode/json?latlng=0.00.0
The code is given below :
Gps3Activity.java
public class Gps3Activity extends AppCompatActivity {
private Button display;
private LocationManager locationManager;
private LocationListener locationListener;
private RequestQueue requestQueue;
private double lat;
private double lng;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_gps3);
display = (Button) findViewById(R.id.displayL);
requestQueue = Volley.newRequestQueue(this);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationListener = new myLocationlistener();
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 0, locationListener);
display.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Log.e("Latitude", String.valueOf(lat));
Log.e("Longitude", String.valueOf(lng));
JsonObjectRequest request = new JsonObjectRequest("http://maps.googleapis.com/maps/api/geocode/json?latlng="+ lat+","+lng +"&sensor=true", new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
String address = response.getJSONArray("results").getJSONObject(0).getString("formatted_address");
//textViewCity.setText(address);
Toast.makeText(getApplicationContext(), "City : " + address, Toast.LENGTH_LONG);
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
});
requestQueue.add(request);
}
});
}
private class myLocationlistener implements LocationListener {
@Override
public void onLocationChanged(Location location) {
if (location != null) {
lat = location.getLatitude();
lng = location.getLongitude();
}
}
@Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
@Override
public void onProviderEnabled(String s) {
}
@Override
public void onProviderDisabled(String s) {
}
}
}
logcat
07-30 01:18:33.287 9750-9750/com.example.shaloin.gps2 W/System.err: org.json.JSONException: Index 0 out of range [0..0)
07-30 01:18:33.288 9750-9750/com.example.shaloin.gps2 W/System.err: at org.json.JSONArray.get(JSONArray.java:293)
07-30 01:18:33.288 9750-9750/com.example.shaloin.gps2 W/System.err: at org.json.JSONArray.getJSONObject(JSONArray.java:521)
07-30 01:18:33.288 9750-9750/com.example.shaloin.gps2 W/System.err: at com.example.shaloin.gps2.Gps3Activity$1$1.onResponse(Gps3Activity.java:63)
07-30 01:18:33.288 9750-9750/com.example.shaloin.gps2 W/System.err: at com.example.shaloin.gps2.Gps3Activity$1$1.onResponse(Gps3Activity.java:58)
Also I am not able to figure out as to why am I getting the values of latitude and longitude as 0.0.
Can anyone help ? Thank you :)
I just had to change the format of JsonObjectRequest(). The correct format is given below as suggested by @ZeekHuge
JsonObjectRequest(int method,
String url,
JSONObject jsonRequest,
Response.Listener<JSONObject> listener,
Response.ErrorListener errorListener)
The correct code is given below :
public class Gps3Activity extends AppCompatActivity {
private static final int MY_PERMISSIONS_REQUEST_SEND_SMS =0 ;
private Button display;
private TextView displayLocation;
private LocationManager locationManager;
private LocationListener locationListener;
private RequestQueue requestQueue;
private double lat;
private double lng;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_gps3);
display = (Button) findViewById(R.id.displayL);
displayLocation=(TextView)findViewById(R.id.location1);
requestQueue = Volley.newRequestQueue(this);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationListener = new myLocationlistener();
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 0, locationListener);
display.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
getLocation(lat,lng);
Log.e("Latitude", String.valueOf(lat));
Log.e("Longitude", String.valueOf(lng));
Log.e("city",address);
Toast.makeText(getApplicationContext(), "City : " + address, Toast.LENGTH_LONG);
displayLocation.setText("City : "+address);
}
});
}
private class myLocationlistener implements LocationListener {
@Override
public void onLocationChanged(Location location) {
if (location != null) {
lat = location.getLatitude();
lng = location.getLongitude();
//Toast.makeText(getApplicationContext(),"Latitude: "+lat+"\nLongitude: "+lng,Toast.LENGTH_LONG).show();
getLocation(lat,lng);
}
}
@Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
@Override
public void onProviderEnabled(String s) {
}
@Override
public void onProviderDisabled(String s) {
}
}
public void getLocation(double latitude,double longitude){
JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET,
"http://maps.googleapis.com/maps/api/geocode/json?latlng="+ latitude+","+longitude +"&sensor=true",
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
address = response.getJSONArray("results").getJSONObject(0).getString("formatted_address");
//textViewCity.setText(address);
//Toast.makeText(getApplicationContext(), "City : " + address, Toast.LENGTH_LONG);
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
});
requestQueue.add(request);
}
}
Although by using this method it takes a lot of time to display the location.