Comments (5)
你的问题不是很理解.
想要图片中的二维码图片的话,这个框架是不支持的. 但是可以这样,通过扫图片得到单个或多个二维码String,再通过二维码转Bitmap工具把单个或多个二维码String转成Bitmap图片.可是转换后的Bitmap图片和原图中的二维码可能不相同.
String转二维码Bitmap工具:https://blog.csdn.net/zzr1114969538/article/details/76461022
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我的意思,一张图片中有二维码,我想把这个二维分离出来另存为一张图片
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可从刚刚提交里面看到实现,或者下面实现:
在ScanResultPointView中 的
for (int j = 0; j < resultPoint.size(); j++) {
Barcode barcode = resultPoint.get(j);
Rect boundingBox = barcode.getBoundingBox();
后面加上这些代码:
// 扫描得到二维码的 左边线 上边线 右边线 下边线
// 这样便可从图片中扣出这个二维码
int left = boundingBox.left;
int top = boundingBox.top;
int right = boundingBox.right;
int bottom = boundingBox.bottom;
Bitmap bitmap = Bitmap.createBitmap(barcodeBitmap, left, top, right - left, bottom - top);
try {
// 需打开存储权限
String path = Environment.getExternalStorageDirectory().getPath() + "/Android/data/" + fl_result_point_root.getContext().getPackageName() + "/cache/";
File dir = new File(path);
if (!dir.exists()) {
dir.mkdirs();
}
path += System.currentTimeMillis() + "qrcode.png";
FileOutputStream fout = new FileOutputStream(path);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, fout);
Log.i("ScanResultPointView", "qrcode picture path: " + path);
} catch (Exception e) {
e.printStackTrace();
}
from mlkitscanner.
可从刚刚提交里面看到实现,或者下面实现: 在ScanResultPointView中 的
for (int j = 0; j < resultPoint.size(); j++) { Barcode barcode = resultPoint.get(j); Rect boundingBox = barcode.getBoundingBox();后面加上这些代码:
// 扫描得到二维码的 左边线 上边线 右边线 下边线 // 这样便可从图片中扣出这个二维码 int left = boundingBox.left; int top = boundingBox.top; int right = boundingBox.right; int bottom = boundingBox.bottom; Bitmap bitmap = Bitmap.createBitmap(barcodeBitmap, left, top, right - left, bottom - top); try { // 需打开存储权限 String path = Environment.getExternalStorageDirectory().getPath() + "/Android/data/" + fl_result_point_root.getContext().getPackageName() + "/cache/"; File dir = new File(path); if (!dir.exists()) { dir.mkdirs(); } path += System.currentTimeMillis() + "qrcode.png"; FileOutputStream fout = new FileOutputStream(path); bitmap.compress(Bitmap.CompressFormat.PNG, 100, fout); Log.i("ScanResultPointView", "qrcode picture path: " + path); } catch (Exception e) { e.printStackTrace(); }
可以了。感谢!
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public void onPreview(final byte[] nv21, Camera camera) {
YuvImage yuvImage = new YuvImage(nv21, ImageFormat.NV21, camera.getParameters().getPreviewSize().width, camera.getParameters().getPreviewSize().height, null);
ByteArrayOutputStream stream = new ByteArrayOutputStream(nv21.length);
yuvImage.compressToJpeg(new Rect(0, 0, yuvImage.getWidth(), yuvImage.getHeight()), 90, stream);
Bitmap bitmap = BitmapFactory.decodeByteArray(stream.toByteArray(), 0, stream.size());
InputImage inputImage = InputImage.fromBitmap(bitmap, 0);
//InputImage inputImage = InputImage.fromMediaImage(imageProxy.getImage(), imageProxy.getImageInfo().getRotationDegrees());
// final Bitmap finalBitmap = bitmap;
barcodeScanner.process(inputImage)
.addOnSuccessListener(new OnSuccessListener<List<Barcode>>() {
@Override
public void onSuccess(@NonNull List<Barcode> barcodes) {
if (barcodes.size() == 0) {
return;
}
for (Barcode barcode : barcodes) {
String value = barcode.getRawValue();
Log.e("======", "value:" + value);
}
}
})
.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Log.e("======", "onFailure---:" + e.toString());
}
});
}
不知道为什么解析不了。
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