Android™ Requires Chilkat v11.7.0+

QR Codes for Email, Phone, SMS and Location

See more QR Code Examples

Demonstrates QR codes that start an action on a phone. A QR code only holds text, and what happens on scanning depends on the form of that text: mailto: starts an email, tel: dials a number, SMSTO: starts a text message, and geo: opens a map at a latitude and longitude. A web address opens in the browser. 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);

    boolean success = false;

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    CkFormats fmt = new CkFormats();
    CkJsonObject json = new CkJsonObject();
    CkJsonObject jsonOut = new CkJsonObject();
    json.UpdateInt("render.moduleSize",6);
    json.UpdateBool("output.overwrite",true);
    json.UpdateString("output.return","none");

    //  An email, with the address and optionally a subject.  Spaces in the subject are written %20.
    json.UpdateString("payload.text","mailto:support@example.com?subject=Order%2012345");
    json.UpdateString("output.path","qa_output/qr_email.png");
    success = fmt.QrCode("generate",json,jsonOut);
    if (success == false) {
        Log.i(TAG, fmt.lastErrorText());
        return;
        }

    Log.i(TAG, "email: version " + String.valueOf(jsonOut.IntOf("symbols[0].selectedEncoding.version")) + ", " + jsonOut.stringOf("outputs[0].path"));

    //  

    //  A phone number to dial, in international form.
    json.UpdateString("payload.text","tel:+15555550100");
    json.UpdateString("output.path","qa_output/qr_phone.png");
    success = fmt.QrCode("generate",json,jsonOut);
    if (success == false) {
        Log.i(TAG, fmt.lastErrorText());
        return;
        }

    Log.i(TAG, "phone: version " + String.valueOf(jsonOut.IntOf("symbols[0].selectedEncoding.version")) + ", " + jsonOut.stringOf("outputs[0].path"));

    //  

    //  A text message: the number, then the message.
    json.UpdateString("payload.text","SMSTO:+15555550100:Please call me back");
    json.UpdateString("output.path","qa_output/qr_sms.png");
    success = fmt.QrCode("generate",json,jsonOut);
    if (success == false) {
        Log.i(TAG, fmt.lastErrorText());
        return;
        }

    Log.i(TAG, "sms: version " + String.valueOf(jsonOut.IntOf("symbols[0].selectedEncoding.version")) + ", " + jsonOut.stringOf("outputs[0].path"));

    //  

    //  A location: latitude, then longitude, in degrees.
    json.UpdateString("payload.text","geo:41.8781,-87.6298");
    json.UpdateString("output.path","qa_output/qr_location.png");
    success = fmt.QrCode("generate",json,jsonOut);
    if (success == false) {
        Log.i(TAG, fmt.lastErrorText());
        return;
        }

    Log.i(TAG, "location: version " + String.valueOf(jsonOut.IntOf("symbols[0].selectedEncoding.version")) + ", " + jsonOut.stringOf("outputs[0].path"));

    //  

    //  Sample output:

    //  email: version 4, qa_output/qr_email.png
    //  phone: version 2, qa_output/qr_phone.png
    //  sms: version 3, qa_output/qr_sms.png
    //  location: version 2, qa_output/qr_location.png

  }

  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."
  }
}