I'm working on a project where in I have to parse the CSV file from an URL that has latitudes and longitudes and display it on a Map. The link for the data is here. The data here updates every 5 mins and hence there is no point of saving it and reading the file. So I want to read it dynamically and show it on the map, as the data updates, everything gets updated.
I have done little work here, but I'm not getting the expected result. Instead it is showing some stack of error messages.
My code is below.
BufferedReader buffer = null;
String line;
ArrayList<String> latitudes = new ArrayList<>();
ArrayList<String> longitudes = new ArrayList<>();
ArrayList<String> places = new ArrayList<>();
ArrayList<LatLng> latsLons = new ArrayList<LatLng>();
try {
URL url = new URL("https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_hour.csv");
URLConnection connection = url.openConnection();
InputStream input = connection.getInputStream();
buffer = new BufferedReader(new InputStreamReader(input));
while((line = buffer.readLine()) != null) {
String[] room = line.split(",");
latitudes.add(room[1]);
longitudes.add(room[2]);
places.add(room[13]);
}
latitudes.remove(0); // remove heading
longitudes.remove(0);
places.remove(0);
for (int i = 0; i < latitudes.size(); i++) {
latsLons.add(new LatLng(Double.parseDouble(latitudes.get(i)),
Double.parseDouble(longitudes.get(i))));
}
} catch (NullPointerException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (buffer != null) {
try {
buffer.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
for (LatLng pos: latsLons) {
mMap.addMarker(new MarkerOptions().position(pos).title("Earthquake place"));
}
Can somebody help me fix this?
