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  • How to display openweather map data separately in Android?

    @morbid_leathal
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    Answer it

    I am using openweathermap.org API for displaying current weather for a place user type. My application displayed it However, it is not flexible as it is displaying all different details such as weather description, latitude, longitude, Wind Speed , current temperature.. all in a single string so it is not reusable which we should make. Suppose if i want to display the place on google map with current temperature with a map marker, I should be able to get only what i want in this case current temperature and latitude and longitude.

    I want these details to display on separete textfields. I am beginner in Android. Please look into my code and suggest me with a solution and guidance.


    Here is my main activity code
     

     

    1. Public class MainActivity extends Activity {
    2.   Button btnSubmitCity, btnMap;
    3.   EditText editCityText;
    4.   TextView weather_description, current_temp, wind_speed, textViewResult;
    5.  
    6.  
    7.   @Override
    8.   protected void onCreate(Bundle savedInstanceState) {
    9.     super.onCreate(savedInstanceState);
    10.     setContentView(R.layout.activity_main);
    11.     editCityText = (EditText) findViewById(R.id.editCity);
    12.     btnMap =(Button) findViewById(R.id.mapButton);
    13.     btnSubmitCity = (Button) findViewById(R.id.submitCity);
    14.     weather_description = (TextView) findViewById(R.id.weatherDescription);
    15.     current_temp = (TextView) findViewById(R.id.currentTemp);
    16.     wind_speed = (TextView) findViewById(R.id.windSpeed);
    17.     //textViewResult = (TextView)findViewById(R.id.result);
    18.     textViewResult = (TextView)findViewById(R.id.result);
    19.     btnMap.setVisibility(View.INVISIBLE);
    20.  
    21.     btnMap.setOnClickListener(new View.OnClickListener() {
    22.       @Override
    23.       public void onClick(View v) {
    24.  
    25.       }
    26.     });
    27.     btnSubmitCity.setOnClickListener(new View.OnClickListener() {
    28.       @Override
    29.       public void onClick(View v) {
    30.         //editCityText.getText().toString();
    31.         //HttpGetTask
    32.         String cityString = editCityText.getText().toString();
    33.         if(TextUtils.isEmpty(cityString)) {
    34.           Toast.makeText(MainActivity.this, "Enter a place", Toast.LENGTH_LONG).show();
    35.           return;
    36.         } else{
    37.           new HttpGetTask(cityString, weather_description).execute(cityString);
    38.  
    39.           btnMap.setVisibility(View.VISIBLE);
    40.  
    41.         }
    42.  
    43.  
    44.         //String cityString = city.getText().toString();
    45.         //new HttpGetTask().execute();
    46.         /*
    47.          new HttpGetTask(
    48.             editCityText.getText().toString(),
    49.             textViewResult).execute();
    50.         */
    51.  
    52.       }
    53.     });
    54.  
    55.   }
    56.   private class HttpGetTask extends AsyncTask<String, Void, String> {
    57.     final String FORECAST_BASE_URL = "http://api.openweathermap.org/data/2.5/weather?";
    58.     private static final String TAG = "HttpGetTask";
    59.     String cityName;
    60.     TextView tvResult;
    61.  
    62.     HttpGetTask(String cityName, TextView tvResult){
    63.       this.cityName = cityName;
    64.       this.tvResult = tvResult;
    65.     }
    66.  
    67.  
    68.     @Override
    69.     protected String doInBackground(String... params){
    70.       InputStream in = null;
    71.       HttpURLConnection httpUrlConnection = null;
    72.       String result = "";
    73.       try {
    74.         Uri builtUri = Uri.parse(FORECAST_BASE_URL).buildUpon()
    75.             .appendQueryParameter("q", cityName+",us") // city
    76.             .appendQueryParameter("mode", "json") // json format as result
    77.             .appendQueryParameter("units", "imperial") // metric unit
    78.             .appendQueryParameter("APPID", "e1004b4321dde3f04591ac3386fa3a41")
    79.             .build();
    80.         URL url = new URL(builtUri.toString());
    81.         httpUrlConnection = (HttpURLConnection) url.openConnection();
    82.         in = new BufferedInputStream(
    83.             httpUrlConnection.getInputStream());
    84.         String data = readStream(in);
    85.         result = edu.uco.rawal.p6rabina.JSONWeatherData.getData(data);
    86.  
    87.       } catch (MalformedURLException exception) {
    88.         Log.e(TAG, "MalformedURLException");
    89.       } catch (IOException exception) {
    90.         Log.e(TAG, "IOException");
    91.       } catch (JSONException e) {
    92.         Log.e(TAG, e.getMessage(), e);
    93.         e.printStackTrace();
    94.       } finally {
    95.         if (null != httpUrlConnection) {
    96.           httpUrlConnection.disconnect();
    97.         }
    98.         if (in != null) {
    99.           try {
    100.             in.close();
    101.           } catch (final IOException e) {
    102.             Log.e(TAG, "Error closing stream", e);
    103.           }
    104.         }
    105.     }
    106.  
    107.       return result;
    108.     }
    109.     @Override
    110.     protected void onPostExecute(String result) {
    111.       if (result == null || result == "") {
    112.         Toast.makeText(MainActivity.this,
    113.             "Invalid weather data. Possibly a wrong query",
    114.             Toast.LENGTH_SHORT).show();
    115.         return;
    116.       } else {
    117.         //btnMap.setVisibility(View.VISIBLE);
    118.         tvResult.setText(result);
    119.  
    120.       }
    121.      
    122.     }
    123.  
    124.     private String readStream(InputStream in) {
    125.       BufferedReader reader = null;
    126.       StringBuffer data = new StringBuffer("");
    127.       try {
    128.         reader = new BufferedReader(new InputStreamReader(in));
    129.         String line ;
    130.         while ((line = reader.readLine()) != null) {
    131.           data.append(line);
    132.         }
    133.       } catch (IOException e) {
    134.         Log.e(TAG, "IOException");
    135.       } finally {
    136.         if (reader != null) {
    137.           try {
    138.             reader.close();
    139.           } catch (IOException e) {
    140.             e.printStackTrace();
    141.           }
    142.         }
    143.       }
    144.       return data.toString();
    145.     }
    146.   }
    147. }
    148.  
    149. Here is my JSONWeatherData.java
    150.  
    151. > public class JSONWeatherData {
    152.  
    153.   public static String getData(String weatherJson) throws JSONException {
    154.     String jsonResult = "";
    155.  
    156.     try {
    157.       JSONObject JsonObject = new JSONObject(weatherJson);
    158.       String cod = jsonHelperGetString(JsonObject, "cod");
    159.       if(cod != null) {
    160.         if (cod.equals("200")) {
    161.  
    162.           jsonResult += jsonHelperGetString(JsonObject, "name") + "\n";
    163.           JSONObject sys = jsonHelperGetJSONObject(JsonObject, "sys");
    164.           if (sys != null) {
    165.             jsonResult += jsonHelperGetString(sys, "country") + "\n";
    166.           }
    167.           jsonResult += "\n";
    168.           JSONObject coord = jsonHelperGetJSONObject(JsonObject, "coord");
    169.           if(coord != null){
    170.             String lon = jsonHelperGetString(coord, "lon");
    171.             String lat = jsonHelperGetString(coord, "lat");
    172.             jsonResult += "Lon: " + lon + "\n";
    173.             jsonResult += "Lat: " + lat + "\n";
    174.           }
    175.           jsonResult += "\n";
    176.           JSONArray weather = jsonHelperGetJSONArray(JsonObject, "weather");
    177.           if(weather != null){
    178.             for(int i=0; i<weather.length(); i++){
    179.               JSONObject thisWeather = weather.getJSONObject(i);
    180.               jsonResult += "Weather " + i + ":\n";
    181.  
    182.               jsonResult += jsonHelperGetString(thisWeather, "main") + "\n";
    183.               jsonResult += jsonHelperGetString(thisWeather, "description") + "\n";
    184.               jsonResult += "\n";
    185.             }
    186.           }
    187.           JSONObject main = jsonHelperGetJSONObject(JsonObject, "main");
    188.           if(main != null){
    189.             jsonResult += "temp: " + jsonHelperGetString(main, "temp") + "\n";
    190.  
    191.             jsonResult += "\n";
    192.           }
    193.           JSONObject wind = jsonHelperGetJSONObject(JsonObject, "wind");
    194.           if(wind != null){
    195.  
    196.             jsonResult += "Wind Speed: " + jsonHelperGetString(wind, "speed") + "\n";
    197.  
    198.             jsonResult += "\n";
    199.           }
    200.  
    201.         }
    202.         else if(cod.equals("404")){
    203.           String message = jsonHelperGetString(JsonObject, "message");
    204.           jsonResult += "cod 404: " + message;
    205.  
    206.         }
    207.       } else{
    208.         jsonResult += "cod == null\n";
    209.       }
    210.  
    211.  
    212.     } catch (JSONException e) {
    213.       e.printStackTrace();
    214.       Log.e(TAG, e.getMessage(), e);
    215.       jsonResult += e.getMessage();
    216.  
    217.     }
    218.     return jsonResult;
    219.  
    220.   }
    221.  
    222.   private static String jsonHelperGetString(JSONObject obj, String k){
    223.     String v = null;
    224.     try {
    225.       v = obj.getString(k);
    226.     } catch (JSONException e) {
    227.       e.printStackTrace();
    228.     }
    229.  
    230.     return v;
    231.   }
    232.   private static JSONObject jsonHelperGetJSONObject(JSONObject obj, String k){
    233.     JSONObject o = null;
    234.  
    235.     try {
    236.       o = obj.getJSONObject(k);
    237.     } catch (JSONException e) {
    238.       e.printStackTrace();
    239.     }
    240.  
    241.     return o;
    242.   }
    243.   private static JSONArray jsonHelperGetJSONArray(JSONObject obj, String k){
    244.     JSONArray a = null;
    245.  
    246.     try {
    247.       a = obj.getJSONArray(k);
    248.     } catch (JSONException e) {
    249.       e.printStackTrace();
    250.     }
    251.  
    252.     return a;
    253.   }
    254. }
    255.  

     

    Android openweathermap
    Answer it

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