Complex JSON String parsing in ANDROID

Hello all…..

In the previous post I have shown you how to parse a Simple JSON String in ANDROID.
In today’s tutorial I will show you how to parse a complex JSON String.
Take a look at the example

Here the JSON String used is

"{"menu": "
    "{"id": "
	 ""file", "value": "File", "popup": "
		 "{ "menuitem": [ {"value": "New",   "onclick": "CreateNewDoc()"}, "
			 "{"value": "Open", "onclick": "OpenDoc()"}, {"value": "Close", "onclick": "CloseDoc()"}]}}}";

Now let’s dothe operation………..

package pack.coderzheaven;

import org.json.JSONArray;
import org.json.JSONObject;
import android.app.Activity;
import android.os.Bundle;

public class JSON_Demo extends Activity {
	private JSONObject jObject;
	private String jString = "{"menu": " +
							 "{"id": " +
							 ""file", "value": "File", "popup": " +
							 "{ "menuitem": [ {"value": "New",   "onclick": "CreateNewDoc()"}, " +
							 "{"value": "Open", "onclick": "OpenDoc()"}, {"value": "Close", "onclick": "CloseDoc()"}]}}}";

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		try {
			parse();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	private void parse() throws Exception {

		jObject = new JSONObject(jString);

		JSONObject menuObject = jObject.getJSONObject("menu");
		String attributeId = menuObject.getString("id");
		System.out.println(attributeId);

		String attributeValue = menuObject.getString("value");
		System.out.println(attributeValue);

		JSONObject popupObject = menuObject.getJSONObject("popup");
		JSONArray menuitemArray = popupObject.getJSONArray("menuitem");

		for (int i = 0; i < 3; i++) {
			System.out.println(menuitemArray.getJSONObject(i)
					.getString("value").toString());
			System.out.println(menuitemArray.getJSONObject(i).getString(
					"onclick").toString());
		}
	}
}

Please check the Logcat for the output.

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