Android Open Source - openmidaas-android-app Scan Fragment

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License

The source code is released under:

Apache License

Java Source Code

/*******************************************************************************
 * Copyright 2013 SecureKey Technologies Inc.
 * // w w w.  ja  v  a2s. co  m
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package org.openmidaas.app.activities;

import org.openmidaas.app.R;
import org.openmidaas.app.common.Constants;
import org.openmidaas.app.common.DialogUtils;
import org.openmidaas.app.common.Intents;
import org.openmidaas.app.common.Logger;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;

public class ScanFragment extends Fragment {
  private final int SCAN_REQUEST = 65534;
  Context context;
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    context = getActivity();
    showQRCodeScanner();
  }
  
  private void showQRCodeScanner() {
    // check to see if a rear-camera is available
    if(getActivity().getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA)) {
      Intent intentScan = new Intent(Intents.QR_CODE_INIT_INTENT);
      intentScan.putExtra("SCAN_MODE", "QR_CODE_MODE");
      intentScan.putExtra("SAVE_HISTORY", false);
        try {
          startActivityForResult(intentScan, SCAN_REQUEST);
        } catch (ActivityNotFoundException error) {
          showNoQRCodeScannersPresentDialog();
        }
    } else {
      showNoBackCameraPresentDialog();
    }
  }
  
  private void showNoQRCodeScannersPresentDialog() {
    AlertDialog.Builder dlBuilder = new AlertDialog.Builder(getActivity());
        dlBuilder.setTitle(R.string.no_qrcode_dialog_title);
        dlBuilder.setMessage(R.string.no_qrcode_dialog_message);
        dlBuilder.setIcon(android.R.drawable.ic_dialog_alert);
        dlBuilder.setPositiveButton(R.string.install_button,
            new DialogInterface.OnClickListener() {
              @Override
              public void onClick(DialogInterface dialog, int whichButton) {
                Intent intent = new Intent(Intent.ACTION_VIEW,
                                           Uri.parse(Constants.ZXING_MARKET));
                AlertDialog aDialog = (AlertDialog )dialog;
                try {
                  
                  aDialog.getContext().startActivity(intent);
                }
                catch (ActivityNotFoundException e) { 
                  intent = new Intent(Intent.ACTION_VIEW,
                                      Uri.parse(Constants.ZXING_DIRECT));
                  aDialog.getContext().startActivity(intent);
                }
              }
            }
        );
        dlBuilder.setNegativeButton(R.string.cancel, null);
        dlBuilder.show();
  }
  
  private void showNoBackCameraPresentDialog() {
    DialogUtils.showNeutralButtonDialog(getActivity(), "Problem", getString(R.string.rear_camera_not_present_text));
  }
  
  public void onActivityResult(int requestCode, int resultCode, Intent intent) {
    if (requestCode == SCAN_REQUEST) {
      if (resultCode == Activity.RESULT_OK) {
        if(intent.getStringExtra("SCAN_RESULT") != null) {
          Logger.debug(getClass(), intent.getStringExtra("SCAN_RESULT"));
          ((MainTabActivity)getActivity()).processUrl(intent.getStringExtra("SCAN_RESULT"));
        } else {
          DialogUtils.showNeutralButtonDialog(getActivity(), "Error", "Error in scan");
        }
      } else if (resultCode == Activity.RESULT_CANCELED) {
        Logger.debug(getClass(), "Scan cancelled");
      }
      //Setting the tab back to precious tab 
      ((MainTabActivity)getActivity()).mTabHost.setCurrentTabByTag(((MainTabActivity)getActivity()).currentTab);
     }
  }
}

Java Source Code List

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