Example of Json Data
JSON format
[
{
"procedureId":1,
"planName":"Test 1",
"stepName":"Test step1"
},
{
"procedureId":2,
"planName":"Test 2",
"stepName":"Test step2"
}
]
Parse it like this
public List<Department> parseDepartmentJson(String response) {
List<Department> result = new ArrayList<>();
try {
JSONArray jsonArray = new JSONArray(response);
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObj = jsonArray.getJSONObject(i);
Department departmentObj = new Department();
if (!jsonObj.isNull("procedureId"))
departmentObj.setProcedureId(jsonObj.getInt("procedureId"));
if (!jsonObj.isNull("planName"))
departmentObj.setPlanName(jsonObj.getString("planName"));
if (!jsonObj.isNull("stepName"))
departmentObj.setStepName(jsonObj.getString("stepName"));
result.add(departmentObj);
}
} catch (JSONException e) {
e.printStackTrace();
Log.e(TAG, e.getMessage(), e);
}
}
To check whether the JSON value exists or not, there are 2 methods
'HAS' - Returns true if this object has a mapping for name.
The mapping may be NULL.
if (json.has("status"))
String status = json.getString("status"));
if (json.has("club"))
String club = json.getString("club"));
'isNull' - Returns true if this object has no mapping for name or if it has a
mapping whose value is NULL.
if (!json.isNull("club"))
String club = json.getString("club"));
Here is the other example
[
{
"name" : "Test",
"id" : 512
}, {
"name" : "Test2",
"id" : 573
}, {
"name" : "Test3",
"id" : 585
}
]
Parse Like this
ArrayList<String> arrProducts = new ArrayList<String>();
try {
JSONArray valarray = new JSONArray(jsonstring);
for (int i = 0; i < valarray.length(); i++) {
String str = valarray.getJSONObject(i).getString("name");
arrProducts.add(str);
}
} catch (JSONException e) {
Log.e("JSON", "There was an error parsing the JSON", e);
}