Simple JSON Example

After Adding GSON to your project, you can use it as follows.

main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
<TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
       />
</LinearLayout>

JSON_structure.java 
package beanmatrix.JSON;
public class JSON_structure {

              public String name;
              public String date;
              public String[] message;
}


JSONexampleActivity.java
package beanmatrix.JSON;
import android.app.Activity;
import com.google.gson.Gson;
import android.os.Bundle;
import android.widget.TextView;

public class JSONexampleActivity extends Activity {

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        try {
              /* Inflate TextView from the layout */
              TextView text = new TextView (this);
              /* JSON data considered as an example. Generally this data is obtained
              from a web service.*/
              String json = " {" + " \"name\": \"BeanMatrix\", " + " \"message\": [\"My JSON Example\",\"Using GSON For Parsing\"]," + " \"date\": \"17-7-2012\" "+ "}";
              Gson gson = new Gson();
              JSON_structure obj= gson.fromJson(json, JSON_structure.class);
              text.setText("Name: "+ obj.name +"\n\n");
              setContentView(text);
              text.append("Date: "+ obj.date +"\n\n");
              for(int i=0;i<obj.message.length;i++)
              {
                     text.append("Message: "+ obj.message[i] +"\n\n");
              }
              }
              catch(Exception ex){ex.printStackTrace();}
              }
}