Question

我想捕捉扫描时矩形括号下的QR码图像。我知道QR码图像可以很容易地生成和显示，但我的要求是显示扫描的QR码完全相同的图像。

我试过下面的代码：

scan_btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                IntentIntegrator integrator = new IntentIntegrator(activity);
                integrator.setDesiredBarcodeFormats(IntentIntegrator.QR_CODE_TYPES);
                integrator.setPrompt("Scan");
                integrator.setCameraId(0);
                integrator.setBeepEnabled(false);
                integrator.setBarcodeImageEnabled(false);
                integrator.initiateScan();
            }
        });

.....

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
        if (result != null){
            Bitmap btm = (Bitmap) data.getExtras().get("data");

            ByteArrayOutputStream stream = new ByteArrayOutputStream();
            btm.compress(Bitmap.CompressFormat.PNG, 100, stream);
            image.setImageBitmap(btm);
            if(result.getContents() == null){

                android.widget.Toast.makeText(this, "You cancelled the scanning", Toast.LENGTH_LONG).show();
            }
            else {
                android.widget.Toast.makeText(this, result.getContents(), Toast.LENGTH_LONG).show();
            }

        }
        else {
            super.onActivityResult(requestCode, resultCode, data);
        }
    }

但我得到空位图。

Answer 1

首先，您需要将“setBarcodeImageEnabled”设置为true，以便条形码扫描程序捕获静脉曲张图像。然后在获取条形码结果时，您可以获取图像。

@override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
    result.getBitmap()
    result.getBitmapWithResultPoints(Color.YELLOW)
}

来源：https://github.com/journeyapps/zxing-android-embedded/issues/143

Answer 2

在onActivityResult中使用下面的代码获取图像

String path = data.getStringExtra("SCAN_RESULT_IMAGE_PATH");
File file = new File(path);
Bitmap myBitmap = BitmapFactory.decodeFile(file.getAbsolutePath());

如何在Android中扫描QR码时同时捕获图像？

2 个答案: