Android™

Using JSON StringOf with Non-String Members

See more JSON Examples

If a JSON member is a boolean, integer, or null, using StringOf will return its string representation. Android™

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    //  Create JSON with members of different data types.
    CkJsonObject json = new CkJsonObject();

    json.UpdateInt("a",123);
    json.UpdateBool("b",true);
    json.UpdateNull("c");

    json.put_EmitCompact(false);
    Log.i(TAG, json.emit());

    //  Resulting JSON:
    //  {
    //    "a": 123,
    //    "b": true,
    //    "c": null
    //  }

    String a = json.stringOf("a");
    Log.i(TAG, a);

    String b = json.stringOf("b");
    Log.i(TAG, b);

    String c = json.stringOf("c");
    Log.i(TAG, c);

    //  Output

    //  123
    //  true
    //  null

    //  If you want to get the integer, boolean, or null value
    //  you need to use the methods matching the data type
    int ival = json.IntOf("a");
    boolean bval = json.BoolOf("b");
    boolean hasNull = json.IsNullOf("c");

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}