zxing demo 横屏转竖屏

1. 修改AndroidManifest文件中CaptureActivity对应的属性为：android:screenOrientation="portrait"

android:screenOrientation="portrait"

2. 在DecodeHandler.java文件中的decode函数中，同时在

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

之前添加旋转图像的代码如下

 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. 在CameraManager.java中修改代码为

      //竖屏
      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;