Android Open Source - JsonAsyncTuto Main Activity

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License

The source code is released under:

MIT License

Java Source Code

package json.tushar.tutorial;
//from  w w w . j  a  v  a 2 s  . co  m
import org.json.JSONArray;
import org.json.JSONObject;

import android.app.Activity;
import android.os.Bundle;
import android.os.StrictMode;
import android.widget.TextView;

public class MainActivity extends Activity {

  String jsonUrl = "https://raw.github.com/tushroy/TutorialFiles/master/test.json";
  String jsonDataAfterParsing;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    
//    jsonMainThreadNetworkOperation();
    
    JsonAsyncUiUpdater backGroundUITask = new JsonAsyncUiUpdater(MainActivity.this);
    backGroundUITask.execute(jsonUrl);
    

  }

  private void jsonMainThreadNetworkOperation() {
    // extra. code segment for StrictMode
    if (android.os.Build.VERSION.SDK_INT > 9) {
      StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
          .permitAll().build();

      StrictMode.setThreadPolicy(policy);
    }
    // extra code segment ends
    
    // Network Operation and JSON Parsing Starts
    try {
      // getting JSONObject using JSONParser Class
      JSONObject mainJsonObj = JSONParser.getJSONObject(jsonUrl);

      // getting the JSONArray out of the mainJsonObj
      JSONArray jsonArray = mainJsonObj.getJSONArray("data");
      // here our json array name is "data"
      // visit this url to get understand
      // https://raw.github.com/tushroy/TutorialFiles/master/test.json"

      int arrayindex = 4;
      // getting JSONObject out of jsonArray using array index
      JSONObject tempJsonObject = jsonArray.getJSONObject(arrayindex);
      // we have retrieve json object of index 4 from json array

      // "name" or "id"
      jsonDataAfterParsing = tempJsonObject.getString("name");
      // Retrieving json data using attribute name, you can try "id"

    } catch (Exception e) {
      e.printStackTrace();
    }

    TextView display = (TextView) findViewById(R.id.display);
    display.setText(jsonDataAfterParsing);

  }
}

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