kennyYice23 kennyYice23 - 1 month ago 39
Android Question

OpenWeatherMap Icon download android

I am working on an android app that uses a weather service. I am currently using the API from openweathermap.org and I noticed that in the response there is also an icon tag and I was wondering how do you actually get this image to show. I have tried to fiddle around with it but I cannot seem to figure it out.

This is my Main Activity:

public class MainActivity extends Activity {

String description;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
protected void onStart() {
super.onStart();

Double lat = 55.676098;

Double lon = 12.568337;

String apiKey = "70c5bf4e84a725a8aeb3dd8c7df4c254";
String urlAPI = "http://api.openweathermap.org/data/2.5/weather?lat=" + lat + "&lon=" + lon + "&APPID=" + apiKey;
String imgURL = "http://openweathermap.org/img/w/" + description + ".png";
Weather weatherApi = new Weather();
weatherApi.execute(urlAPI);
weatherApi.execute(imgURL);


}
public void goToShowFishActivity(View view) {

Intent intent = new Intent(this, ShowFishiesActivity.class);
startActivity(intent);

}

public void goToAddNewCatchActivity(View view) {
Intent intent = new Intent(this, AddCatch.class);
startActivity(intent);
}

public void goToLogin(View view) {
Intent intent = new Intent(this, CreateUserActivity.class);
startActivity(intent);
}

private class Weather extends ReadHttpTask{
@Override
protected void onPostExecute(CharSequence charSequence){

String text = charSequence.toString();
Integer start = text.indexOf("icon\":\"" ) + "icon\":\"".length();
Integer end = text.indexOf("\"}",start);
description = text.substring(start, end);


TextView weatherTry = (TextView) findViewById(R.id.weatherTry);
weatherTry.setText(description);


}
}

}


My ReadHttpTask class:

public class ReadHttpTask extends AsyncTask<String, Void, CharSequence> {
@RequiresApi(api = Build.VERSION_CODES.N)
@Override
protected CharSequence doInBackground(String...urls) {
String urlString = urls[0];
try{
CharSequence result = HttpHelper.GetHttpResponse(urlString);
return result;
}
catch (IOException ex){
cancel(true);
String errorMessage = ex.getMessage() + "\n" + urlString;
Log.e("Something went wrong", errorMessage);
return errorMessage;
}
}
}


And my HttpHelper class:

public class HttpHelper {

@RequiresApi(api = Build.VERSION_CODES.N)
public static CharSequence GetHttpResponse(String urlString) throws IOException {
URL url = new URL(urlString);
URLConnection connection = url.openConnection();
if (!(connection instanceof HttpURLConnection)) {
throw new IOException("Not an HTTP connection");
}

HttpURLConnection httpConnection = (HttpURLConnection) connection;
int responseCode = httpConnection.getResponseCode();
if (responseCode != HttpURLConnection.HTTP_OK) {
String responseMessage = httpConnection.getResponseMessage();
throw new IOException("HTTP response code: " + responseCode + " " + responseMessage);

}
InputStream inputStream = httpConnection.getInputStream();
BufferedReader reader = null;
try {
reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
StringBuilder sb = new StringBuilder();
while (true) {
line = reader.readLine();
if (line == null) break;
sb.append(line);
}
return sb;
} finally {
if (reader != null) reader.close();
}
}
}

Answer

The icon value you get in the json, like, 09d or 50d is the icon code. To get the icon you need to create a url such as: http://openweathermap.org/img/w/09d.png.

I suggest you store the icon code as a string and use Picasso to actually display the icon.

String icon = yourJsonObject.getString("icon");
String iconUrl = "http://openweathermap.org/img/w/" + icon + ".png";

Picasso.with(context).load(iconUrl).into(yourImageView);