Android simple weather forecast and android Weather Forecast

Android simple weather forecast and android Weather Forecast

The interface uses Baidu's weather interface:

Http://api.map.baidu.com/telematics/v3/weather? Location = Beijing & output = json & ak = yourkey

Baidu ak application address: http://lbsyun.baidu.com/apiconsole/key

The city is stored in the spinner class, the xml file is read, and the file is filled in the spinner. Xml files are stored in the local res/raw folder.

And add listening events to the three slaves. When you select a province, the spinner of the storage city and region changes accordingly. Similarly, when you select a city, the region's spinner changes accordingly.

// When selecting a province, the city and local lists change to sp_province.setOnItemSelectedListener (new OnItemSelectedListener () {@ Overridepublic void onItemSelected (AdapterView <?> Parent, View view, int position, long id) {currentPro = position; cityAdapter = new ArrayAdapter <City> (MainActivity. this, android. r. layout. simple_spinner_item, android. r. id. text1, provinces. get (position ). getCitys (); cityAdapter. setDropDownViewResource (android. r. layout. simple_spinner_dropdown_item); sp_city.setAdapter (cityAdapter); }@ Overridepublic void onNothingSelected (AdapterView <?> Parent ){}});

When you select a region, create an asynchronous class and use the region name as the parameter.

// When selecting a location, display the specific weather condition sp_district.setOnItemSelectedListener (new OnItemSelectedListener () {@ Overridepublic void onItemSelected (AdapterView <?> Parent, View view, int position, long id) {// select the city District dis = districtAdapter. getItem (position); // Log. I ("I", dis. getName (); new weatherasynctask(cmd.exe cute (dis. getName () ;}@ Overridepublic void onNothingSelected (AdapterView <?> Parent ){}});

In the asynchronous doInBackground method, obtain the weather information from the interface, and process the image here, two Bitmap attributes are defined in the Weather_data class (these two attributes are never used to parse the json string of the weather information obtained from the interface ), assign values to these two attributes after obtaining them from the network, and then pass the encapsulated Weather to the onPostExecute method.

protected Weather doInBackground(String... params) {String url = HttpUtils.getURl(params[0]);String jsonStr = HttpUtils.getJsonStr(url);Weather weather = HttpUtils.fromJson(jsonStr);Result r = weather.getResults().get(0);List<Map<String,Object>> list = new ArrayList<Map<String,Object>>();list = HttpUtils.toListMap(r);for(int i = 0;i<3;i++){Weather_data w = r.getWeather_data().get(i);w.setDayPicture(HttpUtils.getImage(w.getDayPictureUrl()));w.setNightPicture(HttpUtils.getImage(w.getNightPictureUrl()));}return weather;}

You can also store the specific Weather information and images obtained through imageUrl in a list <Map <String, Object>, and then pass it to the onPostExecute method.

In this method, the UI thread assigns values to each control in the layout.

In the process of obtaining resources, I defined a tool class separately,

Including parsing xml files, parsing json strings, and obtaining images.

In the display, only some properties obtained from the Baidu interface are used, and not all of them are used. But the general principle should be like this.

For more information about the errors, please forgive me and point out.

Download Code:

Http://download.csdn.net/detail/worst_hacker/8634955