Question

所有人目前正在尝试从我的应用程序扫描qr代码，并且我使用了zxing库并且它运行良好而且我的问题出在我的galaxy s4 mobile中，扫描区域非常小 enter image description here

请帮帮我

提前致谢

Answer 1

我知道这太晚了，但对其他人有所帮助只需转到相机管理器类并粘贴此代码替换给定方法它适用于所有类型的屏幕

    public Rect getFramingRect() {
    if (framingRect == null) {
    if (camera == null) {
    return null;
    }
    Point screenResolution = configManager.getScreenResolution();
    int width = screenResolution.x * 3 / 4;

    int height = screenResolution.y * 3 / 4;
    Log.v("Framing rect is : ", "width is "+width+"   and height is "+height);
    int leftOffset = (screenResolution.x - width) / 2;
    int topOffset = (screenResolution.y - height) / 2;
    framingRect = new Rect(leftOffset, topOffset, leftOffset + width, topOffset + height);
    Log.d(TAG, "Calculated framing rect: " + framingRect);
    }
    return framingRect;
   }

Answer 2

CameraManager类有两个定义为MIN_FRAME_WIDTH和MIN_FRAME_HEIGHT的常量。你应该根据需要修改它们，一切都应该有效：

private static final int MIN_FRAME_WIDTH = 240;  // (your desired value here)
private static final int MIN_FRAME_HEIGHT = 240; // (your desired value here)

Answer 3

public Rect getFramingRect() {
if (framingRect == null) {
  if (camera == null) {
    return null;
  }
  Point screenResolution = configManager.getScreenResolution();
        int screenx = screenResolution.x;
        int screeny = screenResolution.y;
        int width, height, left, top;
        if (screenx > screeny) {
            width = (int) (screenx * 12.5 / 100);
            height = (int) (screeny * 25 / 100);
            left = (int) screenx * 83 / 100;
            top = (int) screeny * 75 / 100;
        } else {
            left = (int) (screenx * 12.5 / 100);
            top = (int) (screeny * 25 / 100);
            width = (int) screenx * 83 / 100;
            height = (int) screeny * 75 / 100;
        }
  framingRect = new Rect(left,top, width, height);

  Log.d(TAG, "Calculated framing rect: " + framingRect);
}
return framingRect;
}

替换CameraManager.java文件中的上述代码这对我有用，试试这个

Answer 4

如果你是从另一个Android应用程序调用它，请为此使用意图附加SCAN_WIDTH和SCAN_HEIGHT。

如果您正在使用phonegap-plugin-barcodescanner（3.0.0或更高版本），那么传递相同的意图，如xxxxx.scan（onSuccessFunc，onFailFunc，{SCAN_HEIGHT：111，SCAN_WIDTH：222}）将产生相同的意图结果。 111是高度，222是宽度。

Answer 5

如果您使用的是 ZxingScannerView，您可以覆盖 createViewFinderView() 并通过 viewFinderView 增加或减少框架矩形大小，如下所示：

scannerView = object : ZXingScannerView(requireContext()) {
    override fun createViewFinderView(context: Context?): IViewFinder {
         val viewfinderView = super.createViewFinderView(context)
         viewfinderView.setViewFinderOffset(-90) // increase size of framing rectangle
         return viewfinderView;
       }
    }
yourLayour.addView(scannerView)
scannerView.startCamera()

如何增加zxing的扫描区域大小

5 个答案: