Anroid Zxing 3.2.2 横屏转竖屏

最新推荐文章于 2024-03-10 20:03:28 发布

原创最新推荐文章于 2024-03-10 20:03:28 发布 · 1.2k 阅读

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本文详细阐述了针对复杂环境下的二维码扫描问题进行的优化策略，包括修改CameraConfigurationManager类以适配屏幕分辨率，调整CameraManager类中的坐标转换，改进DecodeHandler类的图像旋转逻辑，以及CaptureActivity类的屏幕方向设置。通过这些调整，提高了二维码的扫描速度和准确性。同时，更新AndroidManifest.xml文件以适应特定的屏幕方向。

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在网上找了很多源码，也找了很多很多修改的方法，但都会出现复杂的二维码扫描不出来，或者扫描很慢的问题，所以，自己把现在修改的整理下，以后自己好查看
先修改CameraConfigurationManager类
将

cameraResolution = CameraConfigurationUtils.findBestPreviewSizeValue(parameters, screenResolution);
//修改为
    Point screenResolutionForCamera = new Point();
    screenResolutionForCamera.x = screenResolution.x;
    screenResolutionForCamera.y = screenResolution.y;
    if (screenResolution.x < screenResolution.y) {
      screenResolutionForCamera.x = screenResolution.y;
      screenResolutionForCamera.y = screenResolution.x;
    }
    cameraResolution = CameraConfigurationUtils.findBestPreviewSizeValue(parameters, screenResolutionForCamera);
        /*结束*/

在setDesiredCameraParameters方法中添加
在第一行添加就可以了

    camera.setDisplayOrientation(90);
      /*结束*/

修改CameraManager类

//      rect.left = rect.left * cameraResolution.x / screenResolution.x;
//      rect.right = rect.right * cameraResolution.x / screenResolution.x;
//      rect.top = rect.top * cameraResolution.y / screenResolution.y;
//      rect.bottom = rect.bottom * cameraResolution.y / screenResolution.y;

      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;
      /*结束*/

修改DecodeHandler类

//    PlanarYUVLuminanceSource source = activity.getCameraManager().buildLuminanceSource(data, width, height);
    // 将上面的修改为
    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;

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

修改CaptureActivity类

//setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);
 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT);

//        return ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
        return  ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;

//        return ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;        
        return  ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;

最后将清单文件AndroidManifest.xml

> android:screenOrientation="portrait"`

“`