B4A Library MaterialBarcodeScanner (Uses Google Mobile Vision API)

Johan Schoeman · Apr 17, 2016

You are a Barcode Master!

DonManfred · Apr 17, 2016

Johan Schoeman said:
You are a Barcode Master!

lol... That said from the REAL Barcode Master!

But you told me to write this wrap as you have seen enough barcodes for 2016. so, here it is

jahswant · Apr 17, 2016

Johan Schoeman said:
You are a Barcode Master!

Who is coming to my predilection field.I will burn you..

Wolli013 · Apr 18, 2016

Thank you DonManfred
Verry nice

M6SOFT · Apr 18, 2016

Hi,
This is great lib. I would like use it to read large aztec codes, but in this case vision api have problems. As i see (red tracker signs) probably algorithms trying read it as 1D code. Is it possible set this properties: "public BarcodeDetector.Builder setBarcodeFormats (int format)" to inform algorithm which barcode detector should recognize?

DonManfred · Apr 18, 2016

M6SOFT said:
public BarcodeDetector.Builder setBarcodeFormats (int format)

There is no such method in the builder-source. All available methods i have wrapped. Where did you found this code?

M6SOFT · Apr 18, 2016

This is taken from google vision api: https://developers.google.com/andro...arcode/BarcodeDetector.Builder#public-methods

DonManfred · Apr 18, 2016

that may be. But the lib i wrapped is using the google api. The lib does not use a BarrcodeDetector.Builder. It has it´s own implementation. The MaterialBarcodeScannerBuilder. And that´s what i have wrapped. See the source here: https://github.com/EdwardvanRaak/MaterialBarcodeScanner

DonManfred · Apr 18, 2016

B4X:

mBarcodeDetector = new BarcodeDetector.Builder(mActivity).build();

that´s all of the google builder the lib is using

Edit: but this can be extended i think... trying to add setBarcodeFormat works in eclipse. So the method is IN the googles builder...

will investigate

DonManfred · Apr 18, 2016

DonManfred said:
Edit: but this can be extended i think... trying to add setBarcodeFormat works in eclipse. So the method is IN the googles builder...

Please try this version. I added a BarcodeFormat(int) to the builder

M6SOFT · Apr 18, 2016

You're super fast! Unfortunately this not help in recognizing but many many thanks for Your effort with this and all other libs.

PS I send small donation. Thanks!

Johan Schoeman · Apr 23, 2016

Hi Manfred

Trying to get the scanner to work:
1. Followed this thread by @corwin42 to set up your scanner for AppCompat
2. Have followed this answer by @Erel else it takes a very long time to compile (and sometimes it would not compile at all but crashes with an out of memory error)
3. Have set up the paths etc to the additional resources in the B4A project as follows:

B4X:

#AdditionalRes: ..\resource
#AdditionalRes: ..\ResourceBarcode

#AdditionalRes: C:\Users\----------2\Documents\Basic 4 Android\JOHAN APPS\JHS LIBS\resource\b4a_appcompat, de.amberhome.objects.appcompat
#AdditionalRes: C:\ANDRIOD_SDK_TOOLS\extras\android\support\v7\appcompat\res, android.support.v7.appcompat
#AdditionalRes: C:\ANDRIOD_SDK_TOOLS\extras\google\google_play_services\libproject\google-play-services_lib\res, com.google.android.gms

'#ExcludeClasses: .games, .drive, .ads, .fitness, .wearable, .measurement, .cast, .auth, .nearby
'#ExcludeClasses: .tagmanager, .analytics, .wallet, .plus, .gcm, .maps, .panorama

'#Extends: android.support.v7.app.ActionBarActivity
#Extends: android.support.v7.app.AppCompatActivity

So, I get this:

The project starts and I can click on the Checkbox, RadioButton, Spinner (days of week), and the menu. All working OK. But when I click on the button to start the scanner the project crashes (ClassCastException):

B4X:

** Activity (main) Pause, UserClosed = true **
** Activity (main) Create, isFirst = false **
** Activity (main) Resume **
Spinner1 ItemClick event fired
Button1 Click event fired
EventBus.postSticky
Create intent
startActivity
** Activity (main) Pause, UserClosed = false **
onCreate
onMaterialBarcodeScanner
startCameraSource
new SoundPoolPlayer
start check isGooglePlayServicesAvailable
isGooglePlayServicesAvailable 0
success = 0
setupLayout
setupButtons
java.lang.ClassCastException: android.widget.LinearLayout$LayoutParams cannot be cast to com.android.internal.widget.ActionBarOverlayLayout$LayoutParams
    at com.android.internal.widget.ActionBarOverlayLayout.applyInsets(ActionBarOverlayLayout.java:204)
    at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:402)
    at android.view.View.measure(View.java:17331)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5376)
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
    at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2548)
    at android.view.View.measure(View.java:17331)
    at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2279)
    at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1393)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1592)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1251)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6540)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:813)
    at android.view.Choreographer.doCallbacks(Choreographer.java:613)
    at android.view.Choreographer.doFrame(Choreographer.java:583)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:799)
    at android.os.Handler.handleCallback(Handler.java:733)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:146)
    at android.app.ActivityThread.main(ActivityThread.java:5593)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:515)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
    at dalvik.system.NativeStart.main(Native Method)

Any idea what is the solution for this error?

DonManfred · Apr 23, 2016

Johan Schoeman said:
Any idea what is the solution for this error?

Not as yet. Maybe you need to post your manifest. There are changes in the example i provided to setup the google play service correctly.

SetApplicationAttribute(android:theme, "@style/MyAppTheme")
AddApplicationText(<meta-data
android:name="com.google.android.gms.version"
android:value="@Integer/google_play_services_version" />
<meta-data
android:name="com.google.android.gms.vision.DEPENDENCIES"
android:value="barcode" />)
AddApplicationText(<activity
android:theme="@style/AppTheme.NoActionBar"
android:name="com.edwardvanraak.materialbarcodescanner.MaterialBarcodeScannerActivity"
android:label="@string/library_name" >
</activity>)
AddPermission(android.permission.CAMERA) ' Required to be able to access the camera device.

Johan Schoeman · Apr 23, 2016

DonManfred said:
Maybe you need to post your manifest

Here is the Manifest:

B4X:

'This code will be applied to the manifest file during compilation.
'You do not need to modify it in most cases.
'See this link for for more information: http://www.b4x.com/forum/showthread.php?p=78136
AddManifestText(
<uses-sdk android:minSdkVersion="7" android:targetSdkVersion="21"/>
<supports-screens android:largeScreens="true"
    android:normalScreens="true"
    android:smallScreens="true"
    android:anyDensity="true"/>)
SetApplicationAttribute(android:icon, "@drawable/icon")
SetApplicationAttribute(android:label, "$LABEL$")
SetApplicationAttribute(android:label, "$LABEL$")

'End of default text.

SetApplicationAttribute(android:theme, "@style/MyAppTheme")
AddApplicationText(<meta-data
            android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version" />
        <meta-data
            android:name="com.google.android.gms.vision.DEPENDENCIES"
            android:value="barcode" />)
AddApplicationText(<activity
            android:theme="@style/AppTheme.NoActionBar"
            android:name="com.edwardvanraak.materialbarcodescanner.MaterialBarcodeScannerActivity"
            android:label="@string/library_name" >
        </activity>)
AddPermission(android.permission.CAMERA) ' Required to be able to access the camera device.

Johan Schoeman · Apr 23, 2016

OK - I've got it working. I have changed ....\ResourceBarcode\values\styles.xml from

B4X:

<resources>

    <!-- Base application theme. -->
     <style name="AppTheme" parent="AppTheme.NoActionBar"/>
    <style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
    </style>

    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />

</resources>

....to....

B4X:

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat"/>

    <style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
    </style>

    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />

</resources>

Wolli013 · Apr 23, 2016

Work by Samsung Galaxy s6 perfect - thank you DonManfred !

Not Work by Samsung Galaxy s3 - App stopped by scan

Not Work by Samsung Galaxy Tab4 - App stopped by scan

Sorry for my english

DonManfred · Apr 23, 2016

hmm. can you upload you project?

DonManfred · Apr 23, 2016

Wolli013 said:
Not Work by Samsung Galaxy s3 - App stopped by scan
Not Work by Samsung Galaxy Tab4 - App stopped by scan

Irgendwelche Fehler im Log? Any errors in the log (maybe the unfiltered)

Johan Schoeman · Apr 23, 2016

Wolli013 said:
Work by Samsung Galaxy s6 perfect - thank you DonManfred !

Not Work by Samsung Galaxy s3 - App stopped by scan
Not Work by Samsung Galaxy Tab4 - App stopped by scan

Sorry for my english

Replace the code in the B4A project's \ResourceBarcode\values\styles.xml file with this code and see if it sorts out the problem:

B4X:

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat"/>

    <style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
    </style>

    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />

</resources>

B4A Library MaterialBarcodeScanner (Uses Google Mobile Vision API)

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