Android™ Requires Chilkat v11.7.0+

Get the QR Code Capabilities of the Chilkat Version in Use

See more QR Code Examples

Demonstrates the capabilities operation, which describes what the installed version of Chilkat can do: the range of QR versions, the error-correction levels, the operations, the image formats and the limits. A program can check for a feature here instead of testing for a Chilkat version number. The request can be an empty JSON object. 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.

    CkJsonObject json = new CkJsonObject();
    CkFormats fmt = new CkFormats();
    CkJsonObject jsonOut = new CkJsonObject();
    success = fmt.QrCode("capabilities",json,jsonOut);
    if (success == false) {
        Log.i(TAG, fmt.lastErrorText());
        return;
        }

    Log.i(TAG, "Chilkat version: " + jsonOut.stringOf("productVersion"));
    Log.i(TAG, "symbology: " + jsonOut.stringOf("symbologies[0].id"));
    Log.i(TAG, "QR versions: " + String.valueOf(jsonOut.IntOf("symbologies[0].encoding.version.min")) + " to " + String.valueOf(jsonOut.IntOf("symbologies[0].encoding.version.max")));
    Log.i(TAG, "structured append, most symbols: " + String.valueOf(jsonOut.IntOf("symbologies[0].structuredAppend.maxSymbols")));

    int i;
    int n;
    n = jsonOut.SizeOfArray("symbologies[0].encoding.errorCorrection");
    for (i = 0; i <= n - 1; i++) {
        jsonOut.put_I(i);
        Log.i(TAG, "error correction: " + jsonOut.stringOf("symbologies[0].encoding.errorCorrection[i]"));
        }

    //  The operations this version implements.
    n = jsonOut.SizeOfArray("operations");
    for (i = 0; i <= n - 1; i++) {
        jsonOut.put_I(i);
        if (jsonOut.BoolOf("operations[i].available") == true) {
            Log.i(TAG, "operation: " + jsonOut.stringOf("operations[i].name"));
            }

        }

    n = jsonOut.SizeOfArray("imageFormats.output");
    for (i = 0; i <= n - 1; i++) {
        jsonOut.put_I(i);
        Log.i(TAG, "image format: " + jsonOut.stringOf("imageFormats.output[i]"));
        }

    Log.i(TAG, "default timeout: " + String.valueOf(jsonOut.IntOf("limits.timeoutMs.default")) + " ms");
    Log.i(TAG, "default largest image: " + String.valueOf(jsonOut.IntOf("limits.maxPixels.default")) + " pixels");

    //  Sample output:

    //  Chilkat version: 11.7.0
    //  symbology: qr
    //  QR versions: 1 to 40
    //  structured append, most symbols: 16
    //  error correction: auto
    //  error correction: L
    //  error correction: M
    //  error correction: Q
    //  error correction: H
    //  operation: generate
    //  operation: measure
    //  operation: validate
    //  operation: capabilities
    //  image format: png
    //  image format: svg
    //  default timeout: 10000 ms
    //  default largest image: 16777216 pixels

  }

  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."
  }
}