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    copied!<p>This is the intentintegrator I've used</p> <p><strong>IntentIntegrator.java</strong></p> <pre><code>/* * Copyright 2009 ZXing authors * * 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 com.your.package.name; import com.your.package.name.IntentIntegrator; import com.your.package.name.IntentResult; import android.app.AlertDialog; import android.app.Activity; import android.content.ActivityNotFoundException; import android.content.DialogInterface; import android.content.Intent; import android.net.Uri; /** * &lt;p&gt;A utility class which helps ease integration with Barcode Scanner via {@link Intent}s. This is a simple * way to invoke barcode scanning and receive the result, without any need to integrate, modify, or learn the * project's source code.&lt;/p&gt; * * &lt;h2&gt;Initiating a barcode scan&lt;/h2&gt; * * &lt;p&gt;Integration is essentially as easy as calling {@link #initiateScan(Activity)} and waiting * for the result in your app.&lt;/p&gt; * * &lt;p&gt;It does require that the Barcode Scanner application is installed. The * {@link #initiateScan(Activity)} method will prompt the user to download the application, if needed.&lt;/p&gt; * * &lt;p&gt;There are a few steps to using this integration. First, your {@link Activity} must implement * the method {@link Activity#onActivityResult(int, int, Intent)} and include a line of code like this:&lt;/p&gt; * * &lt;p&gt;{@code * public void onActivityResult(int requestCode, int resultCode, Intent intent) { * IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent); * if (scanResult != null) { * // handle scan result * } * // else continue with any other code you need in the method * ... * } * }&lt;/p&gt; * * &lt;p&gt;This is where you will handle a scan result. * Second, just call this in response to a user action somewhere to begin the scan process:&lt;/p&gt; * * &lt;p&gt;{@code IntentIntegrator.initiateScan(yourActivity);}&lt;/p&gt; * * &lt;p&gt;You can use {@link #initiateScan(Activity, CharSequence, CharSequence, CharSequence, CharSequence)} or * {@link #initiateScan(Activity, int, int, int, int)} to customize the download prompt with * different text labels.&lt;/p&gt; * * &lt;p&gt;Note that {@link #initiateScan(Activity)} returns an {@link AlertDialog} which is non-null if the * user was prompted to download the application. This lets the calling app potentially manage the dialog. * In particular, ideally, the app dismisses the dialog if it's still active in its {@link Activity#onPause()} * method.&lt;/p&gt; * * &lt;h2&gt;Sharing text via barcode&lt;/h2&gt; * * &lt;p&gt;To share text, encoded as a QR Code on-screen, similarly, see {@link #shareText(Activity, CharSequence)}.&lt;/p&gt; * * &lt;p&gt;Some code, particularly download integration, was contributed from the Anobiit application.&lt;/p&gt; * * @author Sean Owen * @author Fred Lin * @author Isaac Potoczny-Jones * @author Brad Drehmer */ public final class IntentIntegrator { public static final int REQUEST_CODE = 0x0ba7c0de; // get it? public static final String DEFAULT_TITLE = "Install Barcode Scanner?"; public static final String DEFAULT_MESSAGE = "This application requires Barcode Scanner. Would you like to install it?"; public static final String DEFAULT_YES = "Yes"; public static final String DEFAULT_NO = "No"; // supported barcode formats public static final String PRODUCT_CODE_TYPES = "UPC_A,UPC_E,EAN_8,EAN_13"; public static final String ONE_D_CODE_TYPES = PRODUCT_CODE_TYPES + ",CODE_39,CODE_93,CODE_128"; public static final String QR_CODE_TYPES = "QR_CODE"; public static final String ALL_CODE_TYPES = null; private IntentIntegrator() { } /** * See {@link #initiateScan(Activity, CharSequence, CharSequence, CharSequence, CharSequence)} -- * same, but uses default English labels. */ public static AlertDialog initiateScan(Activity activity) { return initiateScan(activity, DEFAULT_TITLE, DEFAULT_MESSAGE, DEFAULT_YES, DEFAULT_NO); } /** * See {@link #initiateScan(Activity, CharSequence, CharSequence, CharSequence, CharSequence)} -- * same, but takes string IDs which refer * to the {@link Activity}'s resource bundle entries. */ public static AlertDialog initiateScan(Activity activity, int stringTitle, int stringMessage, int stringButtonYes, int stringButtonNo) { return initiateScan(activity, activity.getString(stringTitle), activity.getString(stringMessage), activity.getString(stringButtonYes), activity.getString(stringButtonNo)); } /** * See {@link #initiateScan(Activity, CharSequence, CharSequence, CharSequence, CharSequence, CharSequence)} -- * same, but scans for all supported barcode types. * @param stringTitle title of dialog prompting user to download Barcode Scanner * @param stringMessage text of dialog prompting user to download Barcode Scanner * @param stringButtonYes text of button user clicks when agreeing to download * Barcode Scanner (e.g. "Yes") * @param stringButtonNo text of button user clicks when declining to download * Barcode Scanner (e.g. "No") * @return an {@link AlertDialog} if the user was prompted to download the app, * null otherwise */ public static AlertDialog initiateScan(Activity activity, CharSequence stringTitle, CharSequence stringMessage, CharSequence stringButtonYes, CharSequence stringButtonNo) { return initiateScan(activity, stringTitle, stringMessage, stringButtonYes, stringButtonNo, ALL_CODE_TYPES); } /** * Invokes scanning. * * @param stringTitle title of dialog prompting user to download Barcode Scanner * @param stringMessage text of dialog prompting user to download Barcode Scanner * @param stringButtonYes text of button user clicks when agreeing to download * Barcode Scanner (e.g. "Yes") * @param stringButtonNo text of button user clicks when declining to download * Barcode Scanner (e.g. "No") * @param stringDesiredBarcodeFormats a comma separated list of codes you would * like to scan for. * @return an {@link AlertDialog} if the user was prompted to download the app, * null otherwise * @throws InterruptedException if timeout expires before a scan completes */ public static AlertDialog initiateScan(Activity activity, CharSequence stringTitle, CharSequence stringMessage, CharSequence stringButtonYes, CharSequence stringButtonNo, CharSequence stringDesiredBarcodeFormats) { Intent intentScan = new Intent("com.google.zxing.client.android.SCAN"); intentScan.addCategory(Intent.CATEGORY_DEFAULT); // check which types of codes to scan for if (stringDesiredBarcodeFormats != null) { // set the desired barcode types intentScan.putExtra("SCAN_FORMATS", stringDesiredBarcodeFormats); } try { activity.startActivityForResult(intentScan, REQUEST_CODE); return null; } catch (ActivityNotFoundException e) { return showDownloadDialog(activity, stringTitle, stringMessage, stringButtonYes, stringButtonNo); } } private static AlertDialog showDownloadDialog(final Activity activity, CharSequence stringTitle, CharSequence stringMessage, CharSequence stringButtonYes, CharSequence stringButtonNo) { AlertDialog.Builder downloadDialog = new AlertDialog.Builder(activity); downloadDialog.setTitle(stringTitle); downloadDialog.setMessage(stringMessage); downloadDialog.setPositiveButton(stringButtonYes, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialogInterface, int i) { Uri uri = Uri.parse("market://search?q=pname:com.google.zxing.client.android"); Intent intent = new Intent(Intent.ACTION_VIEW, uri); activity.startActivity(intent); } }); downloadDialog.setNegativeButton(stringButtonNo, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialogInterface, int i) {} }); return downloadDialog.show(); } /** * &lt;p&gt;Call this from your {@link Activity}'s * {@link Activity#onActivityResult(int, int, Intent)} method.&lt;/p&gt; * * @return null if the event handled here was not related to {@link IntentIntegrator}, or * else an {@link IntentResult} containing the result of the scan. If the user cancelled scanning, * the fields will be null. */ public static IntentResult parseActivityResult(int requestCode, int resultCode, Intent intent) { if (requestCode == REQUEST_CODE) { if (resultCode == Activity.RESULT_OK) { String contents = intent.getStringExtra("SCAN_RESULT"); String formatName = intent.getStringExtra("SCAN_RESULT_FORMAT"); return new IntentResult(contents, formatName); } else { return new IntentResult(null, null); } } return null; } /** * See {@link #shareText(Activity, CharSequence, CharSequence, CharSequence, CharSequence, CharSequence)} -- * same, but uses default English labels. */ public static void shareText(Activity activity, CharSequence text) { shareText(activity, text, DEFAULT_TITLE, DEFAULT_MESSAGE, DEFAULT_YES, DEFAULT_NO); } /** * See {@link #shareText(Activity, CharSequence, CharSequence, CharSequence, CharSequence, CharSequence)} -- * same, but takes string IDs which refer to the {@link Activity}'s resource bundle entries. */ public static void shareText(Activity activity, CharSequence text, int stringTitle, int stringMessage, int stringButtonYes, int stringButtonNo) { shareText(activity, text, activity.getString(stringTitle), activity.getString(stringMessage), activity.getString(stringButtonYes), activity.getString(stringButtonNo)); } /** * Shares the given text by encoding it as a barcode, such that another user can * scan the text off the screen of the device. * * @param text the text string to encode as a barcode * @param stringTitle title of dialog prompting user to download Barcode Scanner * @param stringMessage text of dialog prompting user to download Barcode Scanner * @param stringButtonYes text of button user clicks when agreeing to download * Barcode Scanner (e.g. "Yes") * @param stringButtonNo text of button user clicks when declining to download * Barcode Scanner (e.g. "No") */ public static void shareText(Activity activity, CharSequence text, CharSequence stringTitle, CharSequence stringMessage, CharSequence stringButtonYes, CharSequence stringButtonNo) { Intent intent = new Intent(); intent.setAction("com.google.zxing.client.android.ENCODE"); intent.putExtra("ENCODE_TYPE", "TEXT_TYPE"); intent.putExtra("ENCODE_DATA", text); try { activity.startActivity(intent); } catch (ActivityNotFoundException e) { showDownloadDialog(activity, stringTitle, stringMessage, stringButtonYes, stringButtonNo); } } } </code></pre> <p><strong>IntentResult.java</strong></p> <pre><code>/* * Copyright 2009 ZXing authors * * 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 com.your.package.name; import com.your.package.name.IntentIntegrator; /** * &lt;p&gt;Encapsulates the result of a barcode scan invoked through {@link IntentIntegrator}.&lt;/p&gt; * * @author Sean Owen */ public final class IntentResult { private final String contents; private final String formatName; IntentResult(String contents, String formatName) { this.contents = contents; this.formatName = formatName; } /** * @return raw content of barcode */ public String getContents() { return contents; } /** * @return name of format, like "QR_CODE", "UPC_A". See &lt;code&gt;BarcodeFormat&lt;/code&gt; for more format names. */ public String getFormatName() { return formatName; } } </code></pre> <p>And then to use it</p> <pre><code>private void someFunction() { IntentIntegrator.initiateScan(this); } protected void onActivityResult(int requestCode, int resultCode, Intent data) { switch(requestCode) { case IntentIntegrator.REQUEST_CODE: { if (resultCode == RESULT_CANCELED){ } else { IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, data); String UPCScanned = scanResult.getContents(); } break; } } } </code></pre>
 

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