Android Zxing改变方向为肖像

Question

在阅读了几个关于这个问题的问题和帖子后,我正在尝试旋转Zxing显示器.按照说明操作后,显示屏确实旋转,但扫描仪的矩形没有按照应有的位置放置(如附图所示).

这就是我所做的:

1. 在CameraConfigurationManager中:

   camera.setDisplayOrientation(90);
   

2. 在DecodeHandler.java中

   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;
   

3. 在CameraManager.java中:

   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;
   

Answer 1

在经历了很多挣扎之后,我发现了问题,我希望它能在将来帮助某个人.

在initFromCameraParameters方法中CameraConfigurationManager,假设扫描是ALWAYS in landscape mode,并因此修复时width < height.如果您按照问题中的步骤删除此检查,它可以正常工作.

Answer 2

谢谢您的回答!!它确实对我有所帮助,我注意到的一件事是至少在zxing 2.1上你需要将"rotatingData"传递给buildLuminanceSource而不仅仅是"data",这一行最终会像这样:

PlanarYUVLuminanceSource source = activity.getCameraManager().buildLuminanceSource(rotatedData, width, height);

希望这有助于其他人!

Answer 3

至于zxing库:2.2.0对方向变化的支持是固有的

在清单中添加/编辑以下内容:

<activity
    android:name="com.journeyapps.barcodescanner.CaptureActivity"
    android:screenOrientation="fullSensor"
    tools:replace="screenOrientation" />

在致电扫描仪时设置其他财产:

IntentIntegrator integrator = new IntentIntegrator(this);

//allows portrait/landscape mode
integrator.setOrientationLocked(false);//"additional property"
integrator.initiateScan();

参考链接:https://github.com/journeyapps/zxing-android-embedded#changing-the-orientation

Answer 4

好吧,我在ProjectLibrary(xzing项目)上进行了一些小改动,并且能够将方向景观改为肖像

在setDesiredCameraParameters method of class CameraConfigurationManager加

camera.setDisplayOrientation(90);

..在我原始项目的AndroidManifest.xml文件中.我设置screenOrientation = portrait它并且它在我的ICS 4.0.3上工作正常

   <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> 

Answer 5

1. 在CameraConfigurationManager:

   camera.setDisplayOrientation(90);
   

2. 在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;
   

3. 在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;
   

4. 在CameraConfigurationManager:

   if    (width > height) {
     Log.i(TAG, "Display reports portrait orientation; assuming this is incorrect");
     int temp = width;
     width = height;
     height = temp;
   }
   

5. 更改android:screenOrientation="portrait"的CaptureActivity清单中.