Android™

PDF List Unsigned Signature Fields

See more PDF Signatures Examples

Demonstrates how to list the unsigned signature fields in a PDF.

Note: This example requires Chilkat v9.5.0.90 or greater.

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.

    CkPdf pdf = new CkPdf();

    // Load a PDF containing 2 remaining unsigned signature fields:
    success = pdf.LoadFile("qa_data/pdf/doctor_patient_parent.pdf");
    if (success == false) {
        Log.i(TAG, pdf.lastErrorText());
        return;
        }

    // Note: This example requires Chilkat v9.5.0.90 or greater.
    CkJsonObject json = new CkJsonObject();
    pdf.GetUnsignedSigFields(json);

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

    // Result:
    // {
    //   "unsignedSigField": [
    //     "doctor_signature",
    //     "parent_signature"
    //   ]
    // }

    // To iterate over the field names:
    String strVal;

    int i = 0;
    int count_i = json.SizeOfArray("unsignedSigField");
    while (i < count_i) {
        json.put_I(i);
        strVal = json.stringOf("unsignedSigField[i]");
        Log.i(TAG, strVal);
        i = i + 1;
        }


  }

  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."
  }
}