Android Zxing二维码扫描图片拉伸问题的解决方法

Z时代
2024-01-10
分类：综合

还是这个接手项目，二维码扫描集成的是zxing，扫描界面的图像有明显的拉伸变形。

这种问题，根据以往的经验，一般是x，y轴错位引起的，处理好x，y轴的问题，一般可以解决问题。

由于这个问题，之前有很多人遇到，并分享在网上了，所以，我这里也就不需要重复造轮子了。

这里看了一篇博客：Android Zxing二维码扫描图片拉伸，用了上面的办法，

成功的解决图片拉伸问题。

解决方法如下：

修改CameraConfigurationManager.Java里面的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);
 }