I need to have Scanner width of let say 200dp but I want it to calculate height depending on the aspect ratio of the camera. Does CamView provide for that? I think something like resize(w, h) where if w or h is -1 you would resize preserving aspect ratio

Hi, how are you... I'm trying this library and first I had a problem with the AppCompat library, so I declared it in the dependencies as follows:

compile ('eu.livotov.labs:camview:2.0.0.DEV1-SNAPSHOT@aar') { transitive=true exclude module:'appcompat-v7' }

And it worked fine, so I continued with the coding and when it's time to execute the program it throws the following message:

Error:Execution failed for task ':app:dexDebug'.

com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.7.0_79\bin\java.exe'' finished with non-zero exit value 2

I assume that's a problem with libraries and incompatibilities... So what should I do?

thanks :)

UPDATE

I tried the code below you provided and it gives nullpointer exception

(Heading was Add ability to switch flash on/off) It will be nice to be able to switch camera flash on/off. pseudocode

scanner.start();
if(scanner.hasFlash())
    scanner.switchOn()

I can`t stop the camera for free a camera process for other applications.

@Override
public void onBackPressed() {
    scanner.stopScanner();
    super.onBackPressed();

}

@Override
protected void onPause() {
    scanner.stopScanner();
    super.onPause();
}

/*@Override
protected void onStop() {
    scanner.stopScanner();
    super.onStop();
}*/

@Override
protected void onResume() {
    scanner.startScanner();
    super.onResume();
}

@Override
protected void onDestroy() {
    scanner.stopScanner();
    scanner = null;
    super.onDestroy();
}

Currently scanning area is very small (red rectangle) and it makes hard to scan and adding time for recise scanning. I tried my a agains This App and mine took time to put QR code right under the scanner.

Is there a way to increase (or at least provide a way) to make something like linked in app?

I want to install 2.0.0.DEV1-SNAPSHOT (latest). Putting in version does not work. Would you update the installation guide (telling us what to put in "version" in gradle, instead of x.y.z) for getting the latest?

I'm sorry that am not Gradle/Maven maverick if this is obvious! S.

Moved from zxscanview project, reported by @Leaghte https://github.com/Leaghte

Hi , i tested lib on few devices. Working fine, but on galaxy s6 camera preview is stretched. See the picture below. HUD is not in the middle :(

I fixed the error with api level 9. The adjustSurfaceHolderPre11() was added to late to the surfaceholder. It must be added before the surface is added to the view. Now it works with the ideos x3.

I fixed also the breaking build (typo was corrected in layout but not in strings.xml) which was added by Livin21 from his last pull request.

I noticed how onCodeScanned() is not called properly as expected (in the front scanner?). Scanning 3 QR codes (in random order) with different content, say 1, 2, 3 and afterwards scanning a different code from the last one. So say: 1, 3, 2, 1

Then for the last 1 the callback is not called anymore. Is this a bug on my side? I tried lowering the timeouts to 0 and messing around with calling stopScanner() and startScanner() in the callback but I never got it to scan the last number.

Am I doing something wrong or is this feature intentionally not supported?

I switched from zxscanlib to camview yesterday and was a little confused in the beginning as to why it wasn't able to find the maven fragment. Solution was the version name actually contained a "-" instead of a "." :P

Also you might want to mention in the readme: when including camview through gradle/maven you should include it with {transitive=true} like you described in the zxscanlib readme

For me everything works smooth now, thanks for your work :)

i compiled your project , coded like in the test app ,but camera is not working showing an error in the toast like Scanner error : Camera system error 1

my project using camview, and when i run, show error like this: Error:(47, 28) error: method execPool in class CAMViewAsyncTask<Params,Progress,Result> cannot be applied to given types; required: CAP#1[] found: no arguments reason: formal varargs element type CAP#1 is not accessible from class AutoFocusManager where Params,Progress,Result are type-variables: Params extends Object declared in class CAMViewAsyncTask Progress extends Object declared in class CAMViewAsyncTask Result extends Object declared in class CAMViewAsyncTask where CAP#1 is a fresh type-variable: CAP#1 extends Object from capture of ?

anyone help me?

Hi,

I am getting buffer error when starting camera using ScannerLiveView's startScanner() function. I am running on Android Marshmallow 6 using the latest version of your library. I have also added camera permission in Android manifest file.

E/Camera-JNI: Callback buffer was too small! Expected 460800 bytes, but got 259200 bytes!
E/Camera-JNI: Couldn't allocate byte array for JPEG data
E/Camera-JNI: Callback buffer was too small! Expected 460800 bytes, but got 259200 bytes!
E/Camera-JNI: Couldn't allocate byte array for JPEG data

Update - A clean and rebuild solved the issue, I can see camera now, so I think Android Studio might have been culprit. However, I am still getting the above error in my logcat. Should I be worried about it?

Hello,

i noticed that the old library was deprecated which is now linking here. Thanks for going on with the project !

Anyways i have trouble with the new Library, my Nexus 5 is not working anymore:

heres ADB Output:

07-16 12:57:58.439 10641-10641/eu.livotov.labs.android.camview.test I/art: Late-enabling -Xcheck:jni
07-16 12:57:58.528 10641-10641/eu.livotov.labs.android.camview.test W/System: ClassLoader referenced unknown path: /data/app/eu.livotov.labs.android.camview.test-2/lib/arm
07-16 12:57:58.915 10641-10651/eu.livotov.labs.android.camview.test W/art: Suspending all threads took: 9.173ms
07-16 12:57:58.935 10641-10651/eu.livotov.labs.android.camview.test I/art: Background sticky concurrent mark sweep GC freed 28065(1345KB) AllocSpace objects, 0(0B) LOS objects, 38% free, 14MB/23MB, paused 9.633ms total 160.657ms
07-16 12:57:58.946 10641-10651/eu.livotov.labs.android.camview.test W/art: Suspending all threads took: 9.336ms
07-16 12:57:59.068 10641-10641/eu.livotov.labs.android.camview.test I/CameraManagerGlobal: Connecting to camera service
07-16 12:57:59.182 10641-10699/eu.livotov.labs.android.camview.test W/CameraBase: An error occurred while connecting to camera: 0
07-16 12:57:59.190 10641-10700/eu.livotov.labs.android.camview.test D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true
07-16 12:57:59.264 10641-10700/eu.livotov.labs.android.camview.test I/Adreno-EGL: <qeglDrvAPI_eglInitialize:379>: QUALCOMM Build: 10/21/15, 369a2ea, I96aee987eb
07-16 12:57:59.270 10641-10700/eu.livotov.labs.android.camview.test I/OpenGLRenderer: Initialized EGL, version 1.4
07-16 12:58:00.182 10641-10699/eu.livotov.labs.android.camview.test W/CameraBase: An error occurred while connecting to camera: 0
07-16 12:58:01.184 10641-10699/eu.livotov.labs.android.camview.test W/CameraBase: An error occurred while connecting to camera: 0
07-16 12:58:02.185 10641-10699/eu.livotov.labs.android.camview.test W/CameraBase: An error occurred while connecting to camera: 0
07-16 12:58:02.300 10641-10647/eu.livotov.labs.android.camview.test I/art: Debugger is no longer active
07-16 12:58:03.186 10641-10699/eu.livotov.labs.android.camview.test W/CameraBase: An error occurred while connecting to camera: 0
07-16 12:58:04.212 10641-10641/eu.livotov.labs.android.camview.test E/ScannerLiveView: n/a
07-16 12:58:04.388 10641-10700/eu.livotov.labs.android.camview.test V/RenderScript: 0xaf046000 Launching thread(s), CPUs 4

Surely i used the Example App out of the Repository, my Nexus running is no Custom ROM, its up2date and the old library is working.

Also i tried it with a Samsung its works..

Would be nice if you could investigate why this it not working :(

Hi,

sometimes i get the following error. Happened on samsung s6 with android 6.0.1. Happens only once in a while. App is switching scanner on and off again very often.

java.lang.RuntimeException: getParameters failed (empty parameters)
                                                                   at android.hardware.Camera.native_getParameters(Native Method)
                                                                   at android.hardware.Camera.getParameters(Camera.java:1996)
                                                                   at eu.livotov.labs.android.camview.camera.v1.DefaultCameraV1Controller.rechargePreviewBuffer(DefaultCameraV1Controller.java:169)
                                                                   at eu.livotov.labs.android.camview.camera.v1.DefaultCameraV1Controller.requestLiveData(DefaultCameraV1Controller.java:158)
                                                                   at eu.livotov.labs.android.camview.ScannerLiveView.resumeGrabbing(ScannerLiveView.java:146)
                                                                   at eu.livotov.labs.android.camview.ScannerLiveView.onReceiveProcessedCameraFrame(ScannerLiveView.java:275)
                                                                   at eu.livotov.labs.android.camview.camera.AbstractController$ProcessingResultHandler.handleMessage(AbstractController.java:43)
                                                                   at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                   at android.os.Looper.loop(Looper.java:158)
                                                                   at android.app.ActivityThread.main(ActivityThread.java:7229)
                                                                   at java.lang.reflect.Method.invoke(Native Method)
                                                                   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
                                                                   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

Thanks !