Android(安卓)zxing change orientation to portrait

zxing https://code.google.com/p/zxing/

Multi-format 1D/2D barcode image processing library with clients for Android, Java

zxing-client-android屏幕方向默认是landscape模式，修改如下源码，可改为portrait模式：

1、AndroidManifest.xml：

将android:screenOrientation="landscape"改为

android:screenOrientation="portrait"

2、DecodeHandler.java：

在buildLuminanceSource方法调用前增加

    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;    data = rotatedData;

3、CameraManager.java

将已有的计算rect.left/right/top/bottom的代码，替换为

      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、CameraConfigurationManager.java

4.1、在setDesiredCameraParameters方法内新增代码

camera.setDisplayOrientation(90);

4.2、在initFromCameraParameters方法内注解掉代码 (最新代码可能不需要再改动此处 20130907)

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

注，以上改动基于GoogleCode上最新zxing-client-android源码，并验证有效可行。

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