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QrReader | Android QR-code reader based with ZXing core | QRCode Processing library

 by   smmarat Java Version: Current License: No License

 by   smmarat Java Version: Current License: No License

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kandi X-RAY | QrReader Summary

QrReader is a Java library typically used in Utilities, QRCode Processing applications. QrReader has no bugs, it has no vulnerabilities and it has low support. However QrReader build file is not available. You can download it from GitHub.
Android QR-code reader based with ZXing core.
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
Reuse

kandi-support Support

  • QrReader has a low active ecosystem.
  • It has 14 star(s) with 4 fork(s). There are 6 watchers for this library.
  • It had no major release in the last 12 months.
  • QrReader has no issues reported. There are no pull requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of QrReader is current.
QrReader Support
Best in #QRCode Processing
Average in #QRCode Processing
QrReader Support
Best in #QRCode Processing
Average in #QRCode Processing

quality kandi Quality

  • QrReader has 0 bugs and 0 code smells.
QrReader Quality
Best in #QRCode Processing
Average in #QRCode Processing
QrReader Quality
Best in #QRCode Processing
Average in #QRCode Processing

securitySecurity

  • QrReader has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • QrReader code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
QrReader Security
Best in #QRCode Processing
Average in #QRCode Processing
QrReader Security
Best in #QRCode Processing
Average in #QRCode Processing

license License

  • QrReader does not have a standard license declared.
  • Check the repository for any license declaration and review the terms closely.
  • Without a license, all rights are reserved, and you cannot use the library in your applications.
QrReader License
Best in #QRCode Processing
Average in #QRCode Processing
QrReader License
Best in #QRCode Processing
Average in #QRCode Processing

buildReuse

  • QrReader releases are not available. You will need to build from source code and install.
  • QrReader has no build file. You will be need to create the build yourself to build the component from source.
  • QrReader saves you 234 person hours of effort in developing the same functionality from scratch.
  • It has 570 lines of code, 29 functions and 7 files.
  • It has high code complexity. Code complexity directly impacts maintainability of the code.
QrReader Reuse
Best in #QRCode Processing
Average in #QRCode Processing
QrReader Reuse
Best in #QRCode Processing
Average in #QRCode Processing
Top functions reviewed by kandi - BETA

kandi has reviewed QrReader and discovered the below as its top functions. This is intended to give you an instant insight into QrReader implemented functionality, and help decide if they suit your requirements.

  • Finds the best size in the device .
    • Performs the actual draw on the canvas .
      • Return the original matrix .
        • called when the camera is created
          • Get the framing rectangle in preview mode .
            • Calculates the framing rectangle of the screen .
              • Called when the view is created .
                • When auto focus auto focus is enabled auto focus
                  • Renders the thumbnail .
                    • Get row .

                      Get all kandi verified functions for this library.

                      Get all kandi verified functions for this library.

                      QrReader Key Features

                      Android QR-code reader based with ZXing core

                      How can I read qr codes using CV2 given their CV2's breaking of tuples?

                      copy iconCopydownload iconDownload
                          # if there is a bounding box, draw one, along with the data
                          if bbox is not None:
                              bb_pts = bbox.astype(int).reshape(-1, 2)
                              num_bb_pts = len(bb_pts)
                              for i in range(num_bb_pts):
                                  cv2.line(img,
                                           tuple(bb_pts[i]),
                                           tuple(bb_pts[(i+1) % num_bb_pts]),
                                           color=(255, 0, 255), thickness=2)
                              cv2.putText(img, data,
                                          (bb_pts[0][0], bb_pts[0][1] - 10),
                                          cv2.FONT_HERSHEY_SIMPLEX,
                                          0.5, (0, 255, 0), 2)
                      

                      Object is possibly 'null'. TS2531

                      copy iconCopydownload iconDownload
                      qrRef?.current?.openImageDialog()
                      
                      if(qrRef && qrRef.current) qrRef.current.openImageDialog()
                      
                      qrRef?.current?.openImageDialog()
                      
                      if(qrRef && qrRef.current) qrRef.current.openImageDialog()
                      
                      const onScanFile = () => {
                          if (qrRef.current !== null) {
                              qrRef.current.openImageDialog()
                          }
                      }
                      
                      const qrRef = React.useRef<QrReader>(null)
                      
                      qrRef.current?.openImageDialog()
                      
                      const qrRef = React.useRef<QrReader>(null)
                      
                      qrRef.current?.openImageDialog()
                      
                      const qrRef = useRef<QrReader>(null!)
                      
                      qrRef.current.openImageDialog()
                      
                      const qrRef = useRef<QrReader>(null!)
                      
                      qrRef.current.openImageDialog()
                      

                      How do I retrieve the data from a scanned QR Code?

                      copy iconCopydownload iconDownload
                        const generateQrCode = async () => {
                          try {
                            const user = auth.currentUser
                            if (!user) {
                              alert("No user logged in")
                            } else {
                              const response = await QRCode.toDataURL(user.uid);
                              setImage(response);
                              console.log(response);
                            }
                          } catch (err) {
                            alert("error");
                          }
                        };
                      
                        const handleScanWebCam = (result) => {
                          if (result) {
                            setScanResult(result);
                            firestore
                              .collection("users")
                              .doc(result)
                              .get()
                              .then((snapshot) => {
                                const arr = [];
                                arr.push({
                                  ...snapshot.data(),
                                });
                                setDetails(arr);
                                console.log(arr);
                              });
                          }
                        };
                      
                        useEffect(() => {
                          console.log("Use effect")
                        }, []);
                      
                        const generateQrCode = async () => {
                          try {
                            const user = auth.currentUser
                            if (!user) {
                              alert("No user logged in")
                            } else {
                              const response = await QRCode.toDataURL(user.uid);
                              setImage(response);
                              console.log(response);
                            }
                          } catch (err) {
                            alert("error");
                          }
                        };
                      
                        const handleScanWebCam = (result) => {
                          if (result) {
                            setScanResult(result);
                            firestore
                              .collection("users")
                              .doc(result)
                              .get()
                              .then((snapshot) => {
                                const arr = [];
                                arr.push({
                                  ...snapshot.data(),
                                });
                                setDetails(arr);
                                console.log(arr);
                              });
                          }
                        };
                      
                        useEffect(() => {
                          console.log("Use effect")
                        }, []);
                      

                      How to get Zxing in python working with Heroku?

                      copy iconCopydownload iconDownload
                      https://github.com/heroku/heroku-buildpack-jvm-common.git
                      

                      Module not found: Can't resolve 'fs' in '.../node_modules/destroy' using Next.js mysql Express React

                      copy iconCopydownload iconDownload
                      router.post("/secret/", cors(corsOptions), function(req, res, next) {
                        var sql = "INSERT INTO STELLARKEY (CID, HOSPCODE, SPK, SecretKey) VALUES ?";
                        var values = [
                          [req.body.cid, req.body.HOSPCODE, req.body.spk, req.body.secretkey]
                        ];
                        connection.query(sql, [values], function(err, result) {
                          if (err) console.log(err);
                        });
                      });
                      module.exports = router;
                      
                      fetch("http://localhost:3001/api/secret", {
                                method: "POST",
                                headers: {
                                  Accept: "application/json",
                                  "Content-Type": "application/json"
                                },
                                body: JSON.stringify({
                                  cid: dataJson.ID,
                                  HOSPCODE: HOSPCODE,
                                  spk: dataJson.SPK,
                                  secretkey: dataJson.SecretKey
                                })
                              });
                      
                      const router = require("./routes/routes");
                      
                      app
                        .prepare()
                        .then(() => {
                          const server = express();
                          server.use(bodyParser.json());
                          server.use(bodyParser.urlencoded({ extended: false }));
                          server.use("/api", router);
                          server.get("*", (req, res) => {
                            return handle(req, res);
                          });
                      
                      router.post("/secret/", cors(corsOptions), function(req, res, next) {
                        var sql = "INSERT INTO STELLARKEY (CID, HOSPCODE, SPK, SecretKey) VALUES ?";
                        var values = [
                          [req.body.cid, req.body.HOSPCODE, req.body.spk, req.body.secretkey]
                        ];
                        connection.query(sql, [values], function(err, result) {
                          if (err) console.log(err);
                        });
                      });
                      module.exports = router;
                      
                      fetch("http://localhost:3001/api/secret", {
                                method: "POST",
                                headers: {
                                  Accept: "application/json",
                                  "Content-Type": "application/json"
                                },
                                body: JSON.stringify({
                                  cid: dataJson.ID,
                                  HOSPCODE: HOSPCODE,
                                  spk: dataJson.SPK,
                                  secretkey: dataJson.SecretKey
                                })
                              });
                      
                      const router = require("./routes/routes");
                      
                      app
                        .prepare()
                        .then(() => {
                          const server = express();
                          server.use(bodyParser.json());
                          server.use(bodyParser.urlencoded({ extended: false }));
                          server.use("/api", router);
                          server.get("*", (req, res) => {
                            return handle(req, res);
                          });
                      
                      router.post("/secret/", cors(corsOptions), function(req, res, next) {
                        var sql = "INSERT INTO STELLARKEY (CID, HOSPCODE, SPK, SecretKey) VALUES ?";
                        var values = [
                          [req.body.cid, req.body.HOSPCODE, req.body.spk, req.body.secretkey]
                        ];
                        connection.query(sql, [values], function(err, result) {
                          if (err) console.log(err);
                        });
                      });
                      module.exports = router;
                      
                      fetch("http://localhost:3001/api/secret", {
                                method: "POST",
                                headers: {
                                  Accept: "application/json",
                                  "Content-Type": "application/json"
                                },
                                body: JSON.stringify({
                                  cid: dataJson.ID,
                                  HOSPCODE: HOSPCODE,
                                  spk: dataJson.SPK,
                                  secretkey: dataJson.SecretKey
                                })
                              });
                      
                      const router = require("./routes/routes");
                      
                      app
                        .prepare()
                        .then(() => {
                          const server = express();
                          server.use(bodyParser.json());
                          server.use(bodyParser.urlencoded({ extended: false }));
                          server.use("/api", router);
                          server.get("*", (req, res) => {
                            return handle(req, res);
                          });
                      
                        "scripts": {
                          "dev": "NODE_ENV=dev node server.js",
                          "start": "node server.js",
                          "deploy": "next build && NODE_ENV=production node server.js"
                        }
                      

                      Community Discussions

                      Trending Discussions on QrReader
                      • How can I read qr codes using CV2 given their CV2's breaking of tuples?
                      • Object is possibly 'null'. TS2531
                      • How can i call a Method from the Server project in Blazor Webassembly?
                      • How do I retrieve the data from a scanned QR Code?
                      • How do I edit the files installed by NPM?
                      • How to get Zxing in python working with Heroku?
                      • Module not found: Can't resolve 'fs' in '.../node_modules/destroy' using Next.js mysql Express React
                      Trending Discussions on QrReader

                      QUESTION

                      How can I read qr codes using CV2 given their CV2's breaking of tuples?

                      Asked 2021-Nov-23 at 13:25

                      I'm following a tutorial to get a qr reader working in python, but I'm running into the following error while running it:

                      Exception has occurred: error OpenCV(4.5.4) :-1: error: (-5:Bad argument) in function 'line' Overload resolution failed:

                      • Can't parse 'pt1'. Sequence item with index 0 has a wrong type
                      • Can't parse 'pt1'. Sequence item with index 0 has a wrong type File "C:\Users\me\project\qrreader.py", line 18, in cv2.line(img, tuple(bbox[i][0]), tuple(bbox[(i+1) % len(bbox)][0]), color=(255,

                      The script is as follows

                      import cv2
                      
                      # set up camera object
                      cap = cv2.VideoCapture(0)
                      
                      # QR code detection object
                      detector = cv2.QRCodeDetector()
                      
                      while True:
                          # get the image
                          _, img = cap.read()
                          # get bounding box coords and data
                          data, bbox, _ = detector.detectAndDecode(img)
                          
                          # if there is a bounding box, draw one, along with the data
                          if(bbox is not None):
                              for i in range(len(bbox)):
                                  cv2.line(img, tuple(bbox[i][0]), tuple(bbox[(i+1) % len(bbox)][0]), color=(255,
                                           0, 255), thickness=2)
                              cv2.putText(img, data, (int(bbox[0][0][0]), int(bbox[0][0][1]) - 10), cv2.FONT_HERSHEY_SIMPLEX,
                                          0.5, (0, 255, 0), 2)
                              if data:
                                  print("data found: ", data)
                          # display the image preview
                          cv2.imshow("code detector", img)
                          if(cv2.waitKey(1) == ord("q")):
                              break
                      # free camera object and exit
                      

                      This script is in all of the tutorials out there, seemingly, but it appears to have broke with opencv 4.5.2 changes as far as I can tell, but I can't seem to fix it.

                      If not a tuple, what does the line function require?

                      ANSWER

                      Answered 2021-Nov-23 at 13:25

                      Your bbox is a 3-dimensional array with shape (1,4,2). I suggest you simplify it by reshaping it to a 2D array. To cast it to int, numpy arrays have the astype method. Finally, a tuple is still required by cv2.line, so keep that as-is.

                      Here is one possible solution chunk:

                          # if there is a bounding box, draw one, along with the data
                          if bbox is not None:
                              bb_pts = bbox.astype(int).reshape(-1, 2)
                              num_bb_pts = len(bb_pts)
                              for i in range(num_bb_pts):
                                  cv2.line(img,
                                           tuple(bb_pts[i]),
                                           tuple(bb_pts[(i+1) % num_bb_pts]),
                                           color=(255, 0, 255), thickness=2)
                              cv2.putText(img, data,
                                          (bb_pts[0][0], bb_pts[0][1] - 10),
                                          cv2.FONT_HERSHEY_SIMPLEX,
                                          0.5, (0, 255, 0), 2)
                      

                      Numpy documentation: reshape, astype.

                      Source https://stackoverflow.com/questions/70071782

                      Community Discussions, Code Snippets contain sources that include Stack Exchange Network

                      Vulnerabilities

                      No vulnerabilities reported

                      Install QrReader

                      You can download it from GitHub.
                      You can use QrReader like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the QrReader component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

                      Support

                      For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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