I'm trying to rotate Zxing display after reading a few questions and posts about the issue. After following the instructions, the display did rotate, but the rectangle of the scanner is not positioned as it should (as can be seen on the image attached).
This is what I have done:
in CameraConfigurationManager:
camera.setDisplayOrientation(90);
in DecodeHandler.java
byte[] rotatedData = new byte[data.length]; for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) rotatedData[x * height + height - y - 1] = data[x + y * width]; } int tmp = width; width = height; height = tmp;
in CameraManager.java:
rect.left = rect.left * cameraResolution.y / screenResolution.x; rect.right = rect.right * cameraResolution.y / screenResolution.x; rect.top = rect.top * cameraResolution.x / screenResolution.y; rect.bottom = rect.bottom * cameraResolution.x / screenResolution.y;
After a lot of struggling, I found the problem, and I hope it will help someone in the future.
On initFromCameraParameters
method in CameraConfigurationManager
there is an assumption that the scan is ALWAYS in landscape mode
, and therefor a fix when width < height
. If You follow the steps in the question and remove this check, it works fine.
Thank you for your answer!! it really helped me, one thing that I noticed is that at least on zxing 2.1 you need to pass "rotatedData" to buildLuminanceSource instead of just "data", the line end up like this:
PlanarYUVLuminanceSource source = activity.getCameraManager().buildLuminanceSource(rotatedData, width, height);
Hopefully this helps someone else!
Well I made a small change in ProjectLibrary (xzing project) and able to change orientation landscape to portrait
In setDesiredCameraParameters method of class CameraConfigurationManager
added
camera.setDisplayOrientation(90);
.. in my original project's AndroidManifest.xml
file. I set screenOrientation = portrait
and Its working fine on my ICS 4.0.3
<activity
android:name="com.google.zxing.client.android.CaptureActivity"
android:configChanges="orientation|keyboardHidden"
android:exported="false"
android:screenOrientation="portrait"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
android:windowSoftInputMode="stateAlwaysHidden" >
<intent-filter>
<action android:name="com.phonegap.plugins.barcodescanner.SCAN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
As of zxing library:2.2.0 support for orientation change is inherent
Add/edit the following in manifest:
<activity
android:name="com.journeyapps.barcodescanner.CaptureActivity"
android:screenOrientation="fullSensor"
tools:replace="screenOrientation" />
Set additional property at call to scanner :
IntentIntegrator integrator = new IntentIntegrator(this);
//allows portrait/landscape mode
integrator.setOrientationLocked(false);//"additional property"
integrator.initiateScan();
Reference link : https://github.com/journeyapps/zxing-android-embedded#changing-the-orientation
In CameraConfigurationManager
:
camera.setDisplayOrientation(90);
In DecodeHandler.java
:
byte[] rotatedData = new byte[data.length]; for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) rotatedData[x * height + height - y - 1] = data[x + y * width]; } int tmp = width; width = height; height = tmp;
In CameraManager.java
:
rect.left = rect.left * cameraResolution.y / screenResolution.x; rect.right = rect.right * cameraResolution.y / screenResolution.x; rect.top = rect.top * cameraResolution.x / screenResolution.y; rect.bottom = rect.bottom * cameraResolution.x / screenResolution.y;
In CameraConfigurationManager
:
if (width > height) { Log.i(TAG, "Display reports portrait orientation; assuming this is incorrect"); int temp = width; width = height; height = temp; }
Change android:screenOrientation="portrait"
for CaptureActivity
in manifest.
I'm a developer of Barcode Scanner. Yes, it takes a lot more than this to make it scan in portrait mode. You have to "rotate" the image data, and account for the orientation of the device, its default orientation, and its sensor's orientation.
Barcode Scanner+ scans in portrait mode, and you can integrate with it via Intent in exactly the same way that you integrate with Barcode Scanner . (However it's a for-pay app.)
I've tried various patches, suggested in other answers, but barcode recognition remained unreliable.
I highly recommend using repository below in portrait mode. Try it, it's fast and stable. I used it in my hybrid app.
try this : add android:screenOrientation="sensorPortrait"
<activity android:name=".CaptureActivity"
android:screenOrientation="sensorPortrait"
android:clearTaskOnLaunch="true"
android:stateNotNeeded="true"
android:theme="@style/CaptureTheme"
android:windowSoftInputMode="stateAlwaysHidden"
在您的库中,转到清单文件,在活动标记下更改以下行
android:screenOrientation="portrait"
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