dm77 / zbarscanner Goto Github PK

My android application with Zbar read some values from the wall. Your example code also behave like this. My testing device is Samsung galaxy S4 and S3.

One zbar.jar would be much easier to maintain, when embedding your solution in new android studio projects. So it would be nice to only have the jar and your classes.

Is there any possibility to just use the jar and your classes or even to pack your classes and the zbar.jar in one *.jar-File?

My application with zbar scanner read some values from wall. your sample application also read some values from the wall.My testing device is Samsung galaxy s4 and Samsung galaxy S3.

When scan Chinses, it will return garbleds

Hi , iam using your lib to scan barcode and i am using in fragment but
Scan barcode 4-5 times continuosly , sometimes instead of calling on activity result of fragment , on destroy calls.

public void onPreviewFrame(byte[] data, Camera camera) {
Camera.Parameters parameters = camera.getParameters();
Camera.Size size = parameters.getPreviewSize();

Image barcode = new Image(size.width, size.height, "Y800");
barcode.setData(data);

int result = mScanner.scanImage(barcode);

if (result != 0) {
mCamera.cancelAutoFocus();
mCamera.setPreviewCallback(null);
mCamera.stopPreview();
mPreviewing = false;
SymbolSet syms = mScanner.getResults();
for (Symbol sym : syms) {
String symData = sym.getData();
if (!TextUtils.isEmpty(symData)) {
Log.d(""+getClass(), "Scan barcode zbar scanner activity symData ***** " + symData);
Intent dataIntent = new Intent();
dataIntent.putExtra(SCAN_RESULT, symData);
dataIntent.putExtra(SCAN_RESULT_TYPE, sym.getType());
dataIntent.putExtra("INTERFACE_ID", interface_id);
setResult(Activity.RESULT_OK, dataIntent);
finish();
Log.d(""+getClass(), "Scan barcode zbar scanner activity symData111 ***** " + symData);
break;
}
}
}
}

Would it be possible to make a titanium ZBar module?

Hello,
had someone luck with integration ZBar into Android Studio project ? After setting gradle and successfull compilation of my project, ZBar crashing on following:

  Intent intent = new Intent(this, ZBarScannerActivity.class);
  startActivityForResult(intent, ZBAR_SCANNER_REQUEST);

Thanks for any help.

Regards, Petr

I am getting an error when I read the ISBNs on the back of books. A majority of the time the ISBN is inaccurate. I am wondering if this has something to do with the scan modes I am using? I had to use EAN13 and 8 to get it to read. Any help would be appreciated.

On another note the scan result type always returns null, why is that?

Edit: Also when using ISBN it won't actually read the bar codes on the back of books.

Thank you.

How can implement the method onActivityResult in a Fragment?

Eclipse show me an error on RESULT_OK on if statement.
I have this problem only with fragment. Infact I use this in MainActivity and it's good.

is there any way to detect a barcode that is not coloured black? i was looking for a barcode that has blue color with ean-13 and code128 format

Hi, It was great working with ZBarScanner code. Great work Dushyanth.
But now I'm facing one issue. I'm unable to set area to scan as in IOS.
I checked stackoverflow for solution but no any results found.
I got below link,
http://stackoverflow.com/questions/18918211/how-to-change-area-of-scan-zbar
Please reply.

java.lang.UnsatisfiedLinkError: dlopen failed: /data/app/***/lib/arm/libiconv.so: has text relocations

QR Scanner Not Works in Android 6.0 MarshMallow .So Just Update the lib to Support Android 6.0 and Above

Hey,

I downloaded your scanner, and made it into a library. Then i went and added it to my current android app as a library. I want to call ZBarScannerActivity but it doesn't exist. i can't import com.dm.* either. Not sure what im doing wrong.

Thanks

Hi,

When I tired to take photo on nexus mobile, the images is getting rotated. Basically it getting inverted. Could you please provide solution how to solve this. Thanks.

Hi ,
Whenever i am trying to get the value from scanned image its giving me this exception

09-22 12:42:00.554 5301-5301/com.samplenavi W/System.err﹕ android.content.pm.PackageManager$NameNotFoundException:
09-22 12:42:00.555 5301-5301/com..samplenavi W/System.err﹕ at android.app.ApplicationPackageManager.getPackageInfo(ApplicationPackageManager.java:87)
09-22 12:42:00.555 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.TypefaceEX.a(Unknown Source)
09-22 12:42:00.555 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.TypefaceEX.a(Unknown Source)
09-22 12:42:00.555 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.TypefaceEX.b(Unknown Source)
09-22 12:42:00.555 5301-5301/com.coinsecure.samplenavi W/System.err﹕ at android.graphics.TypefaceEX.SetAppTypeFace(Unknown Source)
09-22 12:42:00.555 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.Typeface.SetAppTypeFace(Typeface.java:441)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at android.app.Application.onConfigurationChanged(Application.java:122)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread.performConfigurationChanged(ActivityThread.java:4078)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread.handleConfigurationChanged(ActivityThread.java:4154)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1456)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at android.os.Handler.dispatchMessage(Handler.java:110)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at android.os.Looper.loop(Looper.java:193)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread.main(ActivityThread.java:5333)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at java.lang.reflect.Method.invokeNative(Native Method)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at java.lang.reflect.Method.invoke(Method.java:515)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:829)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:645)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at dalvik.system.NativeStart.main(Native Method)
09-22 12:42:00.573 5301-5301/com..samplenavi W/System.err﹕ android.content.pm.PackageManager$NameNotFoundException:
09-22 12:42:00.575 5301-5301/com..samplenavi W/System.err﹕ at android.app.ApplicationPackageManager.getPackageInfo(ApplicationPackageManager.java:87)
09-22 12:42:00.576 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.TypefaceEX.a(Unknown Source)
09-22 12:42:00.576 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.TypefaceEX.a(Unknown Source)
09-22 12:42:00.576 5301-5301/com.coinsecure.samplenavi W/System.err﹕ at android.graphics.TypefaceEX.b(Unknown Source)
09-22 12:42:00.576 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.TypefaceEX.SetAppTypeFace(Unknown Source)
09-22 12:42:00.576 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.Typeface.SetAppTypeFace(Typeface.java:441)
09-22 12:42:00.576 5301-5301/com..samplenavi W/System.err﹕ at android.app.Activity.onCreate(Activity.java:905)
09-22 12:42:00.576 5301-5301/com..samplenavi W/System.err﹕ at com.dm.zbar.android.scanner.ZBarScannerActivity.onCreate(ZBarScannerActivity.java:33)
09-22 12:42:00.577 5301-5301/com..samplenavi W/System.err﹕ at android.app.Activity.performCreate(Activity.java:5372)
09-22 12:42:00.577 5301-5301/com..samplenavi W/System.err﹕ at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
09-22 12:42:00.577 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2331)
09-22 12:42:00.577 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2429)
09-22 12:42:00.577 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread.access$800(ActivityThread.java:151)
09-22 12:42:00.578 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1342)
09-22 12:42:00.578 5301-5301/com..samplenavi W/System.err﹕ at android.os.Handler.dispatchMessage(Handler.java:110)
09-22 12:42:00.578 5301-5301/com..samplenavi W/System.err﹕ at android.os.Looper.loop(Looper.java:193)
09-22 12:42:00.579 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread.main(ActivityThread.java:5333)
09-22 12:42:00.579 5301-5301/com..samplenavi W/System.err﹕ at java.lang.reflect.Method.invokeNative(Native Method)
09-22 12:42:00.579 5301-5301/com..samplenavi W/System.err﹕ at java.lang.reflect.Method.invoke(Method.java:515)
09-22 12:42:00.579 5301-5301/com..samplenavi W/System.err﹕ at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:829)
09-22 12:42:00.579 5301-5301/com..samplenavi W/System.err﹕ at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:645)
09-22 12:42:00.580 5301-5301/com..samplenavi W/System.err﹕ at dalvik.system.NativeStart.main(Native Method)

GT-S5830 (2.3.6) scanning no work. Try other zxing scanner can scan and very fast to detect but ZBar cannot scan at all whatever how hard to try to scan.

I have got. Not sure about kind of device

Stack Trace

0 java.lang.ExceptionInInitializerError
1 at java.lang.Class.newInstanceImpl(Native Method)
2 at java.lang.Class.newInstance(Class.java:1319)
3 at android.app.Instrumentation.newActivity(Instrumentation.java:1053)
4 at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1974)
5 at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
6 at android.app.ActivityThread.access$600(ActivityThread.java:130)
7 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
8 at android.os.Handler.dispatchMessage(Handler.java:99)
9 at android.os.Looper.loop(Looper.java:137)
10 at android.app.ActivityThread.main(ActivityThread.java:4745)
11 at java.lang.reflect.Method.invokeNative(Native Method)
12 at java.lang.reflect.Method.invoke(Method.java:511)
13 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
14 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
15 at dalvik.system.NativeStart.main(Native Method)
16 Caused by: java.lang.UnsatisfiedLinkError: unknown failure
17 at java.lang.Runtime.loadLibrary(Runtime.java:370)
18 at java.lang.System.loadLibrary(System.java:535)
19 at com.dm.zbar.android.scanner.ZBarScannerActivity.(ZBarScannerActivity.java:33)
20 ... 15 more
21 java.lang.UnsatisfiedLinkError: unknown failure
22 at java.lang.Runtime.loadLibrary(Runtime.java:370)
23 at java.lang.System.loadLibrary(System.java:535)
24 at com.dm.zbar.android.scanner.ZBarScannerActivity.(ZBarScannerActivity.java:33)
25 at java.lang.Class.newInstanceImpl(Native Method)
26 at java.lang.Class.newInstance(Class.java:1319)
27 at android.app.Instrumentation.newActivity(Instrumentation.java:1053)
28 at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1974)
29 at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
30 at android.app.ActivityThread.access$600(ActivityThread.java:130)
31 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
32 at android.os.Handler.dispatchMessage(Handler.java:99)
33 at android.os.Looper.loop(Looper.java:137)
34 at android.app.ActivityThread.main(ActivityThread.java:4745)
35 at java.lang.reflect.Method.invokeNative(Native Method)
36 at java.lang.reflect.Method.invoke(Method.java:511)
37 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
38 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
39 at dalvik.system.NativeStart.main(Native Method)

After increasing target SDK to 26 I get this error

what's the solution ?

Android 5.1.1

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.hardware.Camera.setDisplayOrientation(int)' on a null object reference
at org.cloudsky.cordovaPlugins.ZBarScannerActivity.setCameraDisplayOrientation(ZBarScannerActivity.java:247)
at org.cloudsky.cordovaPlugins.ZBarScannerActivity.tryStartPreview(ZBarScannerActivity.java:525)
at org.cloudsky.cordovaPlugins.ZBarScannerActivity.surfaceCreated(ZBarScannerActivity.java:279)
at android.view.SurfaceView.updateWindow(SurfaceView.java:580)
at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:176)
at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:944)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1970)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1061)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5891)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
at android.view.Choreographer.doCallbacks(Choreographer.java:580)
at android.view.Choreographer.doFrame(Choreographer.java:550)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5294)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)

Hi ,
Whenever i am trying to get the value from scanned image its giving me this exception

09-22 12:42:00.554 5301-5301/com.samplenavi W/System.err﹕ android.content.pm.PackageManager$NameNotFoundException:
09-22 12:42:00.555 5301-5301/com..samplenavi W/System.err﹕ at android.app.ApplicationPackageManager.getPackageInfo(ApplicationPackageManager.java:87)
09-22 12:42:00.555 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.TypefaceEX.a(Unknown Source)
09-22 12:42:00.555 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.TypefaceEX.a(Unknown Source)
09-22 12:42:00.555 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.TypefaceEX.b(Unknown Source)
09-22 12:42:00.555 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.TypefaceEX.SetAppTypeFace(Unknown Source)
09-22 12:42:00.555 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.Typeface.SetAppTypeFace(Typeface.java:441)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at android.app.Application.onConfigurationChanged(Application.java:122)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread.performConfigurationChanged(ActivityThread.java:4078)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread.handleConfigurationChanged(ActivityThread.java:4154)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1456)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at android.os.Handler.dispatchMessage(Handler.java:110)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at android.os.Looper.loop(Looper.java:193)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread.main(ActivityThread.java:5333)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at java.lang.reflect.Method.invokeNative(Native Method)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at java.lang.reflect.Method.invoke(Method.java:515)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:829)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:645)
09-22 12:42:00.556 5301-5301/com..samplenavi W/System.err﹕ at dalvik.system.NativeStart.main(Native Method)
09-22 12:42:00.573 5301-5301/com..samplenavi W/System.err﹕ android.content.pm.PackageManager$NameNotFoundException:
09-22 12:42:00.575 5301-5301/com..samplenavi W/System.err﹕ at android.app.ApplicationPackageManager.getPackageInfo(ApplicationPackageManager.java:87)
09-22 12:42:00.576 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.TypefaceEX.a(Unknown Source)
09-22 12:42:00.576 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.TypefaceEX.a(Unknown Source)
09-22 12:42:00.576 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.TypefaceEX.b(Unknown Source)
09-22 12:42:00.576 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.TypefaceEX.SetAppTypeFace(Unknown Source)
09-22 12:42:00.576 5301-5301/com..samplenavi W/System.err﹕ at android.graphics.Typeface.SetAppTypeFace(Typeface.java:441)
09-22 12:42:00.576 5301-5301/com..samplenavi W/System.err﹕ at android.app.Activity.onCreate(Activity.java:905)
09-22 12:42:00.576 5301-5301/com..samplenavi W/System.err﹕ at com.dm.zbar.android.scanner.ZBarScannerActivity.onCreate(ZBarScannerActivity.java:33)
09-22 12:42:00.577 5301-5301/com..samplenavi W/System.err﹕ at android.app.Activity.performCreate(Activity.java:5372)
09-22 12:42:00.577 5301-5301/com..samplenavi W/System.err﹕ at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
09-22 12:42:00.577 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2331)
09-22 12:42:00.577 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2429)
09-22 12:42:00.577 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread.access$800(ActivityThread.java:151)
09-22 12:42:00.578 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1342)
09-22 12:42:00.578 5301-5301/com..samplenavi W/System.err﹕ at android.os.Handler.dispatchMessage(Handler.java:110)
09-22 12:42:00.578 5301-5301/com..samplenavi W/System.err﹕ at android.os.Looper.loop(Looper.java:193)
09-22 12:42:00.579 5301-5301/com..samplenavi W/System.err﹕ at android.app.ActivityThread.main(ActivityThread.java:5333)
09-22 12:42:00.579 5301-5301/com..samplenavi W/System.err﹕ at java.lang.reflect.Method.invokeNative(Native Method)
09-22 12:42:00.579 5301-5301/com..samplenavi W/System.err﹕ at java.lang.reflect.Method.invoke(Method.java:515)
09-22 12:42:00.579 5301-5301/com..samplenavi W/System.err﹕ at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:829)
09-22 12:42:00.579 5301-5301/com..samplenavi W/System.err﹕ at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:645)
09-22 12:42:00.580 5301-5301/com..samplenavi W/System.err﹕ at dalvik.system.NativeStart.main(Native Method)

Title says it all.

Probably an issue with using C strings somewhere - not sure if the issue is in ZBarScanner or ZBar but since ZBar isn't maintained I guess the only chance of a fix is here!

Hi,
I am using ZBar library for scanning multiple barcode. When I am trying to scan same barcode for multiple times, everytime It return different values. First time it returns correct value. I am trying to scan a barcode of type EAN13, UPCA, UPCE and EAN8.
I am using the attached image.
Please help to resolve this.

Thanks in Advacnce.

I am unable to get the SCAN_RESULT_TYPE and the call to data.getStringExtra(ZBarConstants.SCAN_RESULT_TYPE) returns null. The UPC code come correct.

I wanted my camera to be in portrait mode so i followed this -> ab644e2

The camera is now in portrait mode but the problem is that the camera is not filling the entire screen, the height is filled but the width is not, there are white borders on the left and right area.

I am using ZbarScanner for my application it is working in all versions but it is not working in 4.0 version

Hello Dushyanth ,
When ever i press my Scan button and try to scan in my Nexus 5 version 4.2.2, the phone freezes following which i need to hard shutdown in-order to access my device.

Works okay on the Nexus 4, with the same Android 4.4.2 os.The scan function worked before.
Please help me with this Dushyanth, it been really bugging me alot.

Thanks,
Varun Thakur.

Thanks for a great project. Is there an easy way to use this in portrait mode? I tried making the obvious tweak in the manifest.

Don't know but due to some reason the success variable for success in the onAutoFocus(boolean success, Camera camera) always returns false in this device whereas it works just fine on rest of the devices.

How m i supposed to fix this issue, a day or two have already gone in vain.

Hello,

How can I change the size of the camera preview? I don't want to cover it full screen, how can i define frame to camera preview instead of whole screen?

Thanks

How I want to show price in my application

how can I turn flash on and off?

Thanks

11-22 15:57:44.635: E/AndroidRuntime(2904): java.lang.NoClassDefFoundError: net.sourceforge.zbar.ImageScanner
11-22 15:57:44.635: E/AndroidRuntime(2904): at com.dm.zbar.android.scanner.ZBarScannerActivity.setupScanner(ZBarScannerActivity.java:57)
11-22 15:57:44.635: E/AndroidRuntime(2904): at com.dm.zbar.android.scanner.ZBarScannerActivity.onCreate(ZBarScannerActivity.java:48)
11-22 15:57:44.635: E/AndroidRuntime(2904): at android.app.Activity.performCreate(Activity.java:5206)
11-22 15:57:44.635: E/AndroidRuntime(2904): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1083)
11-22 15:57:44.635: E/AndroidRuntime(2904): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2064)
11-22 15:57:44.635: E/AndroidRuntime(2904): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125)
11-22 15:57:44.635: E/AndroidRuntime(2904): at android.app.ActivityThread.access$600(ActivityThread.java:140)
11-22 15:57:44.635: E/AndroidRuntime(2904): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227)
11-22 15:57:44.635: E/AndroidRuntime(2904): at android.os.Handler.dispatchMessage(Handler.java:99)
11-22 15:57:44.635: E/AndroidRuntime(2904): at android.os.Looper.loop(Looper.java:137)
11-22 15:57:44.635: E/AndroidRuntime(2904): at android.app.ActivityThread.main(ActivityThread.java:4898)
11-22 15:57:44.635: E/AndroidRuntime(2904): at java.lang.reflect.Method.invokeNative(Native Method)
11-22 15:57:44.635: E/AndroidRuntime(2904): at java.lang.reflect.Method.invoke(Method.java:511)
11-22 15:57:44.635: E/AndroidRuntime(2904): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
11-22 15:57:44.635: E/AndroidRuntime(2904): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
11-22 15:57:44.635: E/AndroidRuntime(2904): at dalvik.system.NativeStart.main(Native Method)

java.lang.NullPointerException
at com.dm.zbar.android.scanner.CameraPreview.surfaceChanged(CameraPreview.java:154)

Camera.open returns null if there is no back-facing camera. Scanning does no more work if I open instead the front facing camera.

i have integrated the zbar library for scanning in my app........when ever i open my scanning activity and lock the device(only in case of honeycomb, 4.0.0 and higher android devices/tabs....works fine for the gingerbread)......and unlock the device the area of the scanning freezes though we can even scan the barcode if it freezes but i have to go back and again launch the scanning activity in order to create the surface again.........

Please Help me with this because i have the sample application of zbar....it behave the same way....is there any issue with the library......what is the appropriate fix for this ???????????.

When i use a printed barcode label with Code39 or Code93 or even Code128 in "data.getStringExtra(ZBarConstants.SCAN_RESULT)" part of code i get the string "BARCODEID" instead of the barcode number i take it when i use UPCA in my printed labels. Why is that?
Thanks for help

Hi, i have used this lib with my Nexus 7 , and it has only front camera , and this Zbar lib doest not worked with the front camera, is there any code or something else which can help to work this lib with front camera ? otherwise it is working fine with my rest of device which have back camera

i have added zBar, i have navigation drawer layout, On Fab button click i trigger the Zbar. onActivity result it should show the result in dashboard but it not working like that. its going back to main activity