Note : Check this out (NEW): QR/Bar-code Scanner using “Zxing Fragment Library”

This guide is to explain how to add the functionality of scanning QR code/barcode to your project using android-zxinglib. The android-zxinglib is an android library project of zxing BarcodeScanner. This is a simplified version of BarcodesScanner project so as it does not contain the full functionality provided there.

1. Download android-zxinglib from Google Project downloads. (android-zxinglib-1.0.zip)

2. Create a new workspace and import the project ‘ZxingLib’.

You’ll see that this library project has less number of packages comparing to ‘BarcodeScanner’ project  providing only the SCAN.

*Note: Project contains errors at switch statements of few classes. You can fix it by selecting the switch and (Press Ctrl +1), then it will suggest to convert switch to if-else statement.

2. Now create a new project to include the scanner. –> Goto project properties –> Android –> library project –> Add the ‘ZxingLib’ as library project.

Now you’ll see that it automatically add zxinglib.jar as dependencies and core.jar as private libraries to you Scanner project.

3.  Add the following uses-permissions and activities to the AndroidManifest.xml of Scanner project

 

 <uses-permission android:name="android.permission.CAMERA" />
 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 <uses-feature android:name="android.hardware.camera" />
 <uses-feature android:name="android.hardware.camera.autofocus" />
 <uses-permission android:name="android.permission.VIBRATE" />

 

<activity android:name="jim.h.common.android.lib.zxing.CaptureActivity"
 android:screenOrientation="landscape" android:configChanges="orientation|keyboardHidden"
 android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
 android:windowSoftInputMode="stateAlwaysHidden" />

4. Add the following line to ScannerActivity at onCreate().

 

startActivity(new Intent(this, CaptureActivity.class));</pre>
<pre>

*Note:  Comment the line //activity.finish() at handleMessage() of CaptureActivityHandler.class of ZxingLib project

Deploying…

Run the application.. when it start the CaptureAcitvity.class, it will open your device camera and starts the scanning.  When you place a barcode at the target view, application will capture the barcode and you’ll see the output as follows.

Thank You 🙂