Generate JSON data

Package com. example. testcreatejson; import org. json. JSONArray; import org. json. JSONObject; import android. app. activity; import android. OS. bundle; import android. view. menu; public class MainActivity extends Activity {// generated JSON data 1 // {// "phones": ["028-123456", "15002806555"], // JSON array // "name": "Xiaoqiang", // string // "age": 17, // value // "address": {"country ": "china", "province": "Sichuan"}, // JSON object // "married ": false // Boolean // generated JSON data 2 // {// "api": "categories", // "count": "3 ", // "data": [// {// "category_id": "1", // "category_name": "Too many other users ", // "category_rgb": "FFFFFF", // "category_news_count": "0" //}, // {// "category_id": "2 ", // "category_name": "category_rgb": "FFFFFF", // "category_news_count": "0 "//}, // {// "category_id": "3", // "category_name": "social", // "category_rgb": "FFFFFF", // "category_news_count ": "113" ///} //] //} @ Override public void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. activity_main); try {// generate JSON data 1 // The first is the outermost layer JSONObject resultJsonObject = new JSONObject (); // phones is an array, therefore, create JSONArray phonesJsonArray = new JSONArray (); // JSONArray to save the data phonesJsonArray. put ("028-123456 "). put ("15002806555"); // The outermost layer stores resultJsonObject. put ("phones", phonesJsonArray); // The outermost layer stores resultJsonObject. put ("name", "Xiaoqiang"); // The outermost layer stores resultJsonObject. put ("age", 17); // address is an object, so create JSONObjectJSONObject addressJSONObject = new JSONObject (); addressJSONObject. put ("country", "china"); addressJSONObject. put ("province", "Sichuan"); // The outermost layer stores resultJsonObject. put ("address", addressJSONObject); // save resultJsonObject at the outermost layer. put ("married", false); System. out. println ("resultJsonObject. toString () = "+ resultJsonObject. toString (); System. out. println ("------------------------------------------------"); // parse JSON1boolean married = resultJsonObject. getBoolean ("married"); JSONObject address = resultJsonObject. getJSONObject ("address"); String country = address. getString ("country"); String province = address. getString ("province"); int age = resultJsonObject. getInt ("age"); String name = resultJsonObject. getString ("name"); JSONArray phones = resultJsonObject. getJSONArray ("phones"); String phoneNumber1 = phones. getString (0); String phoneNumber2 = phones. getString (1); System. out. println ("married =" + married + ", country =" + country + ", province =" + province + ", age =" + age + ", name = "+ name +", phoneNumber1 = "+ phoneNumber1 +", phoneNumber2 = "+ phoneNumber2); System. out. println ("------------------------------------------------"); // generate JSON data 2 JSONObject jsonObject = new JSONObject (); jsonObject. put ("api", "categories"); jsonObject. put ("count", "3"); JSONArray dataJsonArray = new JSONArray (); JSONObject dataJsonObject1 = new JSONObject (); dataJsonObject1.put ("category_id", "1 "); dataJsonObject1.put ("category_name", "name1"); dataJsonObject1.put ("category_rgb", "rgb1"); dataJsonObject1.put ("category_news_count", "1"); dataJsonArray. put (dataJsonObject1); JSONObject dataJsonObject2 = new JSONObject (); dataJsonObject2.put ("category_id", "2"); dataJsonObject2.put ("category_name", "name2 "); dataJsonObject2.put ("category_rgb", "rgb2"); dataJsonObject2.put ("category_news_count", "2"); dataJsonArray. put (dataJsonObject2); JSONObject dataJsonObject3 = new JSONObject (); dataJsonObject3.put ("category_id", "3"); dataJsonObject3.put ("category_name", "name3 "); dataJsonObject3.put ("category_rgb", "rgb3"); dataJsonObject3.put ("category_news_count", "3"); dataJsonArray. put (dataJsonObject3); jsonObject. put ("data", dataJsonArray); System. out. println ("jsonObject. toString () = "+ jsonObject. toString (); System. out. println ("-------------------------------"); // parse JSON2String api = jsonObject. getString ("api"); String count = jsonObject. getString ("count"); JSONArray datas = jsonObject. getJSONArray ("data"); for (int I = 0; I <datas. length (); I ++) {JSONObject everyDataJSONObject = datas. getJSONObject (I); String category_id = everyDataJSONObject. getString ("category_id"); String category_name = everyDataJSONObject. getString ("category_name"); String category_rgb = everyDataJSONObject. getString ("category_rgb"); String category_news_count = everyDataJSONObject. getString ("category_news_count"); System. out. println ("category_id =" + category_id + ", category_name =" + category_name + ", category_rgb =" + category_rgb + ", category_news_count =" + category_news_count); System. out. println ("----------------------------------") ;}} catch (Exception e) {e. printStackTrace () ;}@ Override public boolean onCreateOptionsMenu (Menu menu) {getMenuInflater (). inflate (R. menu. activity_main, menu); return true ;}}