Android之Zxing二維碼掃描圖片拉伸

還是這個接手項目，二維碼掃描集成的是zxing，掃描界面的圖像有明顯的拉伸變形。

這種問題，根據以往的經驗，一般是x，y軸錯位引起的，處理好x，y軸的問題，一般可以解決問題。

由於這個問題，之前有很多人遇到，並分享在網上了，所以，我這裡也就不需要重覆造輪子了。

這裡看了一篇博客：http://blog.csdn.net/aaawqqq/article/details/24852915，用了上面的辦法，

成功的解決圖片拉伸問題。

解決方法如下：

修改CameraConfigurationManager.Java裡面的initFromCameraParameters方法：

void initFromCameraParameters(Camera camera) {
    Camera.Parameters parameters = camera.getParameters();
    previewFormat = parameters.getPreviewFormat();
    previewFormatString = parameters.get("preview-format");
    Log.d(TAG, "Default preview format: " + previewFormat + '/' + previewFormatString);
    WindowManager manager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
    Display display = manager.getDefaultDisplay();
    screenResolution = new Point(display.getWidth(), display.getHeight());
    Log.d(TAG, "Screen resolution: " + screenResolution);

    //added
    Point screenResolutionForCamera = new Point();
    screenResolutionForCamera.x = screenResolution.x;
    screenResolutionForCamera.y = screenResolution.y;
    // preview size is always something like 480*320, other 320*480
    if (screenResolution.x < screenResolution.y) {
      screenResolutionForCamera.x = screenResolution.y;
      screenResolutionForCamera.y = screenResolution.x;
    }
    cameraResolution = getCameraResolution(parameters, screenResolutionForCamera);

//    cameraResolution = getCameraResolution(parameters, screenResolution);
    Log.d(TAG, "Camera resolution: " + screenResolution);
  }