Soru & Cevap

Android Barcode Reader

14.08.2017 - 09:21

Öncelikle merhaba arkadaşlar. Staj yaptığım şirket için bir android qr kod scanner yapıyorum. Kod okuma kısmını araştırarak hallettim. Fakat okunan verinin yanında verinin okunduğu tarih ve saat de çıksın istiyorum. Nasıl yapabilirim. Çok araştırdım ama bulamadım :/

0 Görüntülenme

7 Cevap

Sitedeki sorulara cevap verebilmek için giriş yapın ya da üye olun.

picture-84564-1548924191.jpg
emrekaplan606
16.08.2017 - 08:02

Şu şekilde yaparsan sorun çözülecektir.

 

package com.example.dc.vestelqrcodeanoyher;


import android.*;
import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Vibrator;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.SparseArray;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.widget.TextView;

import com.google.android.gms.vision.CameraSource;
import com.google.android.gms.vision.Detector;
import com.google.android.gms.vision.barcode.Barcode;
import com.google.android.gms.vision.barcode.BarcodeDetector;

import java.io.IOException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

public class MainActivity extends AppCompatActivity {


    SurfaceView cameraPreview;
    TextView txtResult,textView;
    BarcodeDetector barcodeDetector;
    CameraSource cameraSource;
    final int RequestCameraPermissionID = 1001;


    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch (requestCode) {
            case RequestCameraPermissionID: {
                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
                        return;
                    }
                    try {
                        cameraSource.start(cameraPreview.getHolder());
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
            break;
        }
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        cameraPreview = (SurfaceView) findViewById(R.id.cameraPreview);
        txtResult = (TextView) findViewById(R.id.txtResult);

        barcodeDetector = new BarcodeDetector.Builder(this)
                .setBarcodeFormats(Barcode.QR_CODE)
                .build();
        cameraSource = new CameraSource
                .Builder(this, barcodeDetector)
                .setRequestedPreviewSize(640, 480)
                .build();
        //Add Event
        cameraPreview.getHolder().addCallback(new SurfaceHolder.Callback() {
            @Override
            public void surfaceCreated(SurfaceHolder surfaceHolder) {
                if (ActivityCompat.checkSelfPermission(getApplicationContext(), android.Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
                    //Request permission
                    ActivityCompat.requestPermissions(MainActivity.this,
                            new String[]{Manifest.permission.CAMERA},RequestCameraPermissionID);
                    return;
                }
                try {
                    cameraSource.start(cameraPreview.getHolder());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

            @Override
            public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {

            }

            @Override
            public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
                cameraSource.stop();

            }
        });

        barcodeDetector.setProcessor(new Detector.Processor<Barcode>() {
            @Override
            public void release() {

            }

            @Override
            public void receiveDetections(Detector.Detections<Barcode> detections) {
                final SparseArray<Barcode> qrcodes = detections.getDetectedItems();
                if(qrcodes.size() != 0)
                {
                    txtResult.post(new Runnable() {
                        @Override
                        public void run() {
                            //Create vibrate
                            Vibrator vibrator = (Vibrator)getApplicationContext().getSystemService(Context.VIBRATOR_SERVICE);
                            vibrator.vibrate(1000);

                            String date = changeDateFormat(System.currentTimeMillis());
                            txtResult.setText(qrcodes.valueAt(0).displayValue + date);
                            


                        }
                    });
                }
            }
        });
    }

    public String changeDateFormat(long timestamp)
    {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:SS");
        Date currDate = null;
        String newDate  = null;
        try
        {
            currDate = new Date(timestamp);
            newDate  = sdf.format(currDate);

        }
        catch(Exception e)
        {
            //hatayı bastır
        }
        return newDate;
    }
}

 

picture-6840-1502828261.jpg
cugurel7
15.08.2017 - 09:42
package com.example.dc.vestelqrcodeanoyher;


import android.*;
import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Vibrator;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.SparseArray;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.widget.TextView;

import com.google.android.gms.vision.CameraSource;
import com.google.android.gms.vision.Detector;
import com.google.android.gms.vision.barcode.Barcode;
import com.google.android.gms.vision.barcode.BarcodeDetector;

import java.io.IOException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

public class MainActivity extends AppCompatActivity {

    String date = changeDateFormat(System.currentTimeMillis());


    SurfaceView cameraPreview;
    TextView txtResult,textView;
    BarcodeDetector barcodeDetector;
    CameraSource cameraSource;
    final int RequestCameraPermissionID = 1001;


    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch (requestCode) {
            case RequestCameraPermissionID: {
                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
                        return;
                    }
                    try {
                        cameraSource.start(cameraPreview.getHolder());
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
            break;
        }
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        cameraPreview = (SurfaceView) findViewById(R.id.cameraPreview);
        txtResult = (TextView) findViewById(R.id.txtResult);

        barcodeDetector = new BarcodeDetector.Builder(this)
                .setBarcodeFormats(Barcode.QR_CODE)
                .build();
        cameraSource = new CameraSource
                .Builder(this, barcodeDetector)
                .setRequestedPreviewSize(640, 480)
                .build();
        //Add Event
        cameraPreview.getHolder().addCallback(new SurfaceHolder.Callback() {
            @Override
            public void surfaceCreated(SurfaceHolder surfaceHolder) {
                if (ActivityCompat.checkSelfPermission(getApplicationContext(), android.Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
                    //Request permission
                    ActivityCompat.requestPermissions(MainActivity.this,
                            new String[]{Manifest.permission.CAMERA},RequestCameraPermissionID);
                    return;
                }
                try {
                    cameraSource.start(cameraPreview.getHolder());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

            @Override
            public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {

            }

            @Override
            public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
                cameraSource.stop();

            }
        });

        barcodeDetector.setProcessor(new Detector.Processor<Barcode>() {
            @Override
            public void release() {

            }

            @Override
            public void receiveDetections(Detector.Detections<Barcode> detections) {
                final SparseArray<Barcode> qrcodes = detections.getDetectedItems();
                if(qrcodes.size() != 0)
                {
                    txtResult.post(new Runnable() {
                        @Override
                        public void run() {
                            //Create vibrate
                            Vibrator vibrator = (Vibrator)getApplicationContext().getSystemService(Context.VIBRATOR_SERVICE);
                            vibrator.vibrate(1000);
                            txtResult.setText(qrcodes.valueAt(0).displayValue);
                            txtResult.setText(qrcodes.valueAt(0).displayValue + date);


                        }
                    });
                }
            }
        });
    }

    public String changeDateFormat(long timestamp)
    {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:SS");
        Date currDate = null;
        String newDate  = null;
        try
        {
            currDate = new Date(timestamp);
            newDate  = sdf.format(currDate);

        }
        catch(Exception e)
        {
            //hatayı bastır
        }
        return newDate;
    }
}

Hocam tarih ve saati verdi ama şöyle garip bir durum var; 10 saniye öncesinin zamanını falan veriyor. Sanırım veri okunduğu zaman değil telefon uygulamayı açtığı zamanı gösteriyor. :)

picture-6840-1502828261.jpg
cugurel7
15.08.2017 - 11:07

İlgilendiğiniz için çok teşekkür ederim. Ben direkt reader run kısmına koydum şimdi de fonksiyon olarak yazayım. Duruma göre geri dönüş sağlarım olumlu veya olumsuz. Umarım olumlu olur. :D 

picture-84564-1548924191.jpg
emrekaplan606
15.08.2017 - 11:02

    public String changeDateFormat(long timestamp)
    {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:SS");
        Date currDate = null;
        String newDate  = null;
        try
        {
            currDate = new Date(timestamp);
            newDate  = sdf.format(currDate);

        }
        catch(Exception e)
        {
           //hatayı bastır
        }
        return newDate;
    }

Basit bir fonksiyon yazdım. Bu fonksiyonu uygulamanda şu şekilde kullanabilirsin.

String date = changeDateFormat(System.currentTimeMillis());
txtResult.setText(qrcodes.valueAt(0).displayValue + date);

Ayrıca aldığın hata farklı birşey de olabilir. Tam olarak hatayı paylaşırsan çözüm bulabiliriz. 

picture-6840-1502828261.jpg
cugurel7
15.08.2017 - 10:50
package com.example.sercanco.barcodereader;

import android.*;
import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Vibrator;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.SparseArray;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.widget.TextView;

import com.google.android.gms.vision.CameraSource;
import com.google.android.gms.vision.Detector;
import com.google.android.gms.vision.barcode.Barcode;
import com.google.android.gms.vision.barcode.BarcodeDetector;

import java.io.IOException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

public class MainActivity extends AppCompatActivity {

    SurfaceView cameraPreview;
    TextView txtResult;
    BarcodeDetector barcodeDetector;
    CameraSource cameraSource;
    final int RequestCameraPermissionID = 1001;


    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch (requestCode) {
            case RequestCameraPermissionID: {
                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
                        return;
                    }
                    try {
                        cameraSource.start(cameraPreview.getHolder());
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
            break;
        }
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        cameraPreview = (SurfaceView) findViewById(R.id.cameraPreview);
        txtResult = (TextView) findViewById(R.id.txtResult);

        barcodeDetector = new BarcodeDetector.Builder(this)
                .setBarcodeFormats(Barcode.QR_CODE)
                .build();
        cameraSource = new CameraSource
                .Builder(this, barcodeDetector)
                .setRequestedPreviewSize(640, 480)
                .build();
        //Add Event
        cameraPreview.getHolder().addCallback(new SurfaceHolder.Callback() {
            @Override
            public void surfaceCreated(SurfaceHolder surfaceHolder) {
                if (ActivityCompat.checkSelfPermission(getApplicationContext(), android.Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
                    //Request permission
                    ActivityCompat.requestPermissions(MainActivity.this,
                            new String[]{Manifest.permission.CAMERA},RequestCameraPermissionID);
                    return;
                }
                try {
                    cameraSource.start(cameraPreview.getHolder());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

            @Override
            public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {

            }

            @Override
            public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
                cameraSource.stop();

            }
        });

        barcodeDetector.setProcessor(new Detector.Processor<Barcode>() {
            @Override
            public void release() {

            }

            @Override
            public void receiveDetections(Detector.Detections<Barcode> detections) {
                final SparseArray<Barcode> qrcodes = detections.getDetectedItems();
                if(qrcodes.size() != 0)
                {
                    txtResult.post(new Runnable() {
                        @Override
                        public void run() {
                            //Create vibrate
                            Vibrator vibrator = (Vibrator)getApplicationContext().getSystemService(Context.VIBRATOR_SERVICE);
                            vibrator.vibrate(1000);
                            txtResult.setText(qrcodes.valueAt(0).displayValue);
                            DateFormat dateFormatter = new SimpleDateFormat("yyyyMMdd hhmmss");
                            dateFormatter.setLenient(false);
                            Date today = new Date();
                            String s = dateFormatter.format(today);
                        }
                    });
                }
            }
        });
    }
}

Ekledim fakat uygulama duruyor. Hala daha bir çözüm bulamadım. Yabancı kaynaklardı bu tarzda bir örnek yok. Yardımcı olunursa teşekkür ederim. Gerçekten işime yarayacak çünkü

picture-6840-1502828261.jpg
cugurel7
14.08.2017 - 10:41

Çok teşekkür ederim, bir deneyeyim. Umarım olur, çok işime yarar. :)

emrekaplan606
14.08.2017 - 01:30
Rica ederim. Umarım çözüm olur. :)
picture-84564-1548924191.jpg
emrekaplan606
14.08.2017 - 10:04

Merhabalar,

Öncelikle QR Code kullanmadım projelerimde ancak şöyle yapılabilir diye düşünüyorum. Kod okuması yaptığın fonksiyon içerisinde, 

SimpleDateFormat s = new SimpleDateFormat("ddMMyyyyhhmmss");

String format = s.format(new Date());
 

bu şekilde tarih formatı oluşturup istediğin verinin yanına bu formatı bastırabilirsin. Tekrar belirtmek isterim daha önce QR Code kullanmadım. Umarım işine yarar. Kolay gelsin.