GSON

1. Android Developer
GSON
- Andyang

2. JSON
{
"employees": [
{
"firstName": "John",
"lastName": "Doe"
},
{
"firstName": "Anna",
"lastName": "Smith"
}
]
}

3. XML
<employees>
<employee>
<firstName>John</firstName>
<lastName>Doe</lastName>
</employee>
<employee>
<firstName>Anna</firstName>
<lastName>Smith</lastName>
</employee>
</employees>

4. JSON Object & Array
JSON Object {}
JSON Array[]
Key Value pairs "firstName": "John"

5. JSON Data Types
String "name": "Andy"
Boolean “hasMoney": false
int “age": 26
float “height”: 176.1

6. JSON Object Parser
JSONObject jsonObject = new JSONObject(json);
JSONArray jsonArray = new JSONArray(json);
for (int i = 0;sizeOfJSON; i++) {
jsonObject.get("key");
jsonArray.get(i);
………
}

7. How about GSON
Model First
public class Employees {
@SerializedName("firstName") String firstName;
@SerializedName("firstName") String lastName;
geter
setter
….
}

8. JSON Parser
Gson gson = new Gson();
Employees employees = gson.fromJson(json,
Employees.class);

9. GSON Collection Parser
Gson gson = new Gson();
Type type = new
TypeToken<List<Employees>>(){}.getType();
List<Employees> employees
= gson.fromJson(json, type);

10. Powerful Paser
Date fotmat parser
Gson gson = new
GsonBuilder().setDateFormat("yyyy/MM/dd
HH:mm:ss”).create();

11. Live Demo

12. GITHUB
https://github.com/bng86/GsonDemo