https://github.com/devilsen/CZXing

我在使用zxing的总是想扫码的时候怎么才能够快速校准，多个二维码扫描的时候怎么才能指定二维码呢。于是我在Github上找到了CZxing这个控件。在使用的时候发现了有些小问题。

扫码结果没有回调。
回调没有反应；是因为 ScanLayout 没有实现 ScanListener.onScanSuccess 这个方法。

   Scanner.with(this).setMaskColor(resources.getColor(R.color.mask_color)).setBorderColor(resources.getColor(R.color.box_line)).setBorderSize(BarCodeUtil.dp2px(this, 200))
//                .setBorderSize(BarCodeUtil.dp2px(this, 200), BarCodeUtil.dp2px(this, 100)).setCornerColor(resources.getColor(R.color.corner)).setScanLineColors(scanColors)
//                .setHorizontalScanLine()
//                .setBarcodeFormat(BarcodeFormat.EAN_13).setTitle("").showAlbum(true).enableOpenCVDetect(true).setScanNoticeText("扫描二维码").setFlashLightOnText("打开闪光灯").setFlashLightOffText("关闭闪光灯")
//                .setFlashLightInvisible().setFlashLightOnDrawable(R.drawable.ic_highlight_blue_open_24dp).setFlashLightOffDrawable(R.drawable.ic_highlight_white_close_24dp).continuousScan().detectorModel(detectorPrototxtPath, detectorCaffeModelPath).superResolutionModel(superResolutionPrototxtPath, superResolutionCaffeModelPath)
//                .enableOpenCVDetect(true).setOnClickAlbumDelegate(new ScanActivityDelegate.OnClickAlbumDelegate() {@Overridepublic void onClickAlbum(Activity activity) {Intent albumIntent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);activity.startActivityForResult(albumIntent, CODE_SELECT_IMAGE);}@Overridepublic void onSelectData(int requestCode, Intent data) {if (requestCode == CODE_SELECT_IMAGE) {decodeImage(data);}}}).setOnScanResultDelegate(new ScanActivityDelegate.OnScanDelegate() {@Overridepublic void onScanResult(@NonNull final Activity activity, @NonNull final String result, @NonNull BarcodeFormat format) {final String showContent = "format: " + format.name() + "  code: " + result;runOnUiThread(new Runnable() {@Overridepublic void run() {Toast.makeText(MainActivity.this, showContent, Toast.LENGTH_SHORT).show();finish();}});}}).start();

ScanLayout.java

    @Overridepublic void onReadCodeResult(List<CodeResult> resultList) {for (CodeResult result : resultList) {BarCodeUtil.d("result : " + result.toString());}//大于2个二维码，则表两个记号if (resultList.size() > 1) {showResultPoint(resultList);} else {//result<=1的时候则返回结果if (mScanListener != null) {mScanListener.onScanSuccess(resultList);}}}//标记扫描点private void addPointView(final CodeResult result, int resultSize) {int[] points = result.getPoints();if (points == null || points.length < 4) return;int x = points[0];int y = points[1];int width = points[2];int height = points[3];final PointView view = new PointView(getContext());if (resultSize > 1) {view.drawArrow();view.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {if (mScanListener != null) {mScanListener.onClickResult(result);}}});}mResultViews.add(view);if (mResultColor > 0) {view.setColor(mResultColor);}int xOffset = (width - mPointSize) / 2;int yOffset = (height - mPointSize) / 2;xOffset = Math.max(xOffset, 0);yOffset = Math.max(yOffset, 0);final LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);params.leftMargin = x + xOffset;params.topMargin = y + yOffset;mHandler.post(new Runnable() {@Overridepublic void run() {addView(view, params);}});//关闭相机扫描closeCamera();//隐藏扫描线if (mScanBox != null) {runOnUiThread(new Runnable() {@Overridepublic void run() {mScanBox.setVisibility(View.GONE);}});}}

这样写会报错的mScanBox.setVisibility(View.GONE);