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[英]How can create JSON Object and put in JSON Array by for loop in android?
[英]How to create JSON Array with Loop Data in Android
我能夠使用以下代碼在Java中創建JSON數組
JSONObject cust1 = new JSONObject();
try {
cust1.put("number", "1");
cust1.put("name", "customer1");
cust1.put("url", "url1");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JSONObject cust2 = new JSONObject();
try {
cust2.put("number", "2");
cust2.put("name", "customer3");
cust2.put("url", "url3");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JSONObject cust3 = new JSONObject();
try {
cust3.put("number", "3");
cust3.put("name", "customer3");
cust3.put("url", "url3");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JSONObject cust4 = new JSONObject();
try {
cust4.put("number", "4");
cust4.put("name", "customer4");
cust4.put("url", "url4");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JSONObject cust5 = new JSONObject();
try {
cust5.put("number", "5");
cust5.put("name", "customer5");
cust5.put("url", "url5");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JSONArray jsonArray = new JSONArray();
jsonArray.put(cust1);
jsonArray.put(cust2);
jsonArray.put(cust3);
jsonArray.put(cust4);
jsonArray.put(cust5);
String jsonStr = jsonArray.toString();
System.out.println(jsonStr);
輸出JSON
[{"number":"1","name":"customer1","url":"url1"},{"number":"2","name":"customer2","url":"url2"},{"number":"3","name":"customer3","url":"url3"},{"number":"4","name":"customer4","url":"url4"},{"number":"5","name":"customer5","url":"url5"}]
我有20個客戶,如何在有效代碼中創建with循環? 我的意思是最后一個字符只更改一個數字。
解決了Android.K.Doe和Randyka Yudhistira的問題
int data = 20;
JSONArray obj = new JSONArray();
try {
for(int i=1;i<=data;i++){
// 1st object
JSONObject cust= new JSONObject();
cust.put("number",String.valueOf(i));
cust.put("name","customer"+i);
cust.put("url","url"+i);
obj.put(cust);
}
} catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
為客戶創建一個對象,然后添加到列表中。 然后試試這個。
ArrayList<Customer> list = new ArrayList()<>;
JSONArray jArray = new JSONArray();
for(int i = 0; i < count; count++){
try {
JSONObject cust = new JSONObject();
cust.put("number", list.get(i).number);
cust.put("name", list.get(i).name);
cust.put("url", list.get(i).url);
jArray.put("Cust"+i, cust);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
JSONArray jsa = new JSONArray();
for (int i = 1; i<= 20; i++) {
JSONObject cust = new JSONObject();
cust.put("number",String.valueOf(i));
cust.put("name","customer"+i);
cust.put("url","url"+i);
jsa.put(cust);
}
System.out.println(jsa.toString());
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