How To Read Barcodes With The Camera On Android?

April 14, 2024 Post a Comment

I want my application to recognize barcodes taken by camera. Is it possible using Android SDK? Something like this: Barcode Scanner

Solution 1:

It's not built into the SDK, but you can use the Zxing library. It's free, open source, and Apache-licensed.

The 2016 recommendation is to use the Barcode API, which also works offline.

Solution 2:

2016 update

With the latest release of Google Play Services, v7.8, you have access to the new Mobile Vision API. That's probably the most convenient way to implement barcode scanning now, and it also works offline.

From the Android Barcode API:

The Barcode API detects barcodes in real-time, on device, in any orientation. It can also detect multiple barcodes at once.
It reads the following barcode formats:
1D barcodes: EAN-13, EAN-8, UPC-A, UPC-E, Code-39, Code-93, Code-128, ITF, Codabar
2D barcodes: QR Code, Data Matrix, PDF-417, AZTEC
It automatically parses QR Codes, Data Matrix, PDF-417, and Aztec values, for the following supported formats:
URL
Contact information (VCARD, etc.)
Calendar event
Email
Phone
SMS
ISBN
WiFi
Geo-location (latitude and longitude)
AAMVA driver license/ID

Solution 3:

Here is sample code using camera api

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.util.SparseArray;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import java.io.IOException;
import com.google.android.gms.vision.CameraSource;
import com.google.android.gms.vision.Detector;
import com.google.android.gms.vision.Frame;
import com.google.android.gms.vision.barcode.Barcode;
import com.google.android.gms.vision.barcode.BarcodeDetector;

publicclassMainActivityextendsAppCompatActivity {

TextView barcodeInfo;
SurfaceView cameraView;
CameraSource cameraSource;

@OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    cameraView = (SurfaceView) findViewById(R.id.camera_view);
      barcodeInfo = (TextView) findViewById(R.id.txtContent);


    BarcodeDetectorbarcodeDetector=newBarcodeDetector.Builder(this)
                    .setBarcodeFormats(Barcode.CODE_128)//QR_CODE)
                    .build();

    cameraSource = newCameraSource
            .Builder(this, barcodeDetector)
            .setRequestedPreviewSize(640, 480)
            .build();

    cameraView.getHolder().addCallback(newSurfaceHolder.Callback() {
        @OverridepublicvoidsurfaceCreated(SurfaceHolder holder) {

            try {
                cameraSource.start(cameraView.getHolder());
            } catch (IOException ie) {
                Log.e("CAMERA SOURCE", ie.getMessage());
            }
        }

        @OverridepublicvoidsurfaceChanged(SurfaceHolder holder, int format, int width, int height) {
        }

        @OverridepublicvoidsurfaceDestroyed(SurfaceHolder holder) {
            cameraSource.stop();
        }
    });


    barcodeDetector.setProcessor(newDetector.Processor<Barcode>() {
        @Overridepublicvoidrelease() {
        }

        @OverridepublicvoidreceiveDetections(Detector.Detections<Barcode> detections) {

            final SparseArray<Barcode> barcodes = detections.getDetectedItems();

            if (barcodes.size() != 0) {
                barcodeInfo.post(newRunnable() {    // Use the post method of the TextViewpublicvoidrun() {
                        barcodeInfo.setText(    // Update the TextView
                                barcodes.valueAt(0).displayValue
                        );
                    }
                });
            }
        }
    });
}
}

activity_main.xml

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<?xml version="1.0" encoding="utf-8"?><RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.example.gateway.cameraapibarcode.MainActivity"><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="vertical"><SurfaceViewandroid:layout_width="640px"android:layout_height="480px"android:layout_centerVertical="true"android:layout_alignParentLeft="true"android:id="@+id/camera_view"/><TextViewandroid:text=" code reader"android:layout_width="wrap_content"android:layout_height="wrap_content"android:id="@+id/txtContent"/><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="Process"android:id="@+id/button"android:layout_alignParentTop="true"android:layout_alignParentStart="true" /><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:id="@+id/imgview"/></LinearLayout></RelativeLayout>

build.gradle(Module:app)

add compile 'com.google.android.gms:play-services:7.8.+' in dependencies

Solution 4:

Here is a sample code: my app uses ZXing Barcode Scanner.

You need these 2 classes: IntentIntegrator and IntentResult

Call scanner (e.g. OnClickListener, OnMenuItemSelected...), "PRODUCT_MODE" - it scans standard 1D barcodes (you can add more).:

IntentIntegrator.initiateScan(this, 
           "Warning", 
           "ZXing Barcode Scanner is not installed, download?",
           "Yes", "No",
           "PRODUCT_MODE");

Get barcode as a result:

publicvoidonActivityResult(int requestCode, int resultCode, Intent intent) {  
  switch (requestCode) {
  case IntentIntegrator.REQUEST_CODE:
     if (resultCode == Activity.RESULT_OK) {

        IntentResultintentResult= 
           IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);

        if (intentResult != null) {

           Stringcontents= intentResult.getContents();
           Stringformat= intentResult.getFormatName();

           this.elemQuery.setText(contents);
           this.resume = false;
           Log.d("SEARCH_EAN", "OK, EAN: " + contents + ", FORMAT: " + format);
        } else {
           Log.e("SEARCH_EAN", "IntentResult je NULL!");
        }
     } elseif (resultCode == Activity.RESULT_CANCELED) {
        Log.e("SEARCH_EAN", "CANCEL");
     }
  }
}

contents holds barcode number

Solution 5:

module app:

implementation 'com.google.zxing:core:3.2.1'

implementation 'com.journeyapps:zxing-android-embedded:3.2.0@aar'

AndroidManifest.xml

<uses-permissionandroid:name="android.permission.CAMERA" /><uses-featureandroid:name="android.hardware.camera" /><uses-featureandroid:name="android.hardware.camera.autofocus"/>

MainActivity.java

publicclassMainActivityextendsAppCompatActivity {

    Button BarCode;

    @OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        BarCode = findViewById(R.id.button_barcode);
        finalActivityactivity=this;

        BarCode.setOnClickListener(newView.OnClickListener() {
            @OverridepublicvoidonClick(View v) {

                IntentIntegratorintentIntegrator=newIntentIntegrator(activity);
                intentIntegrator.setDesiredBarcodeFormats(intentIntegrator.ALL_CODE_TYPES);
                intentIntegrator.setBeepEnabled(false);
                intentIntegrator.setCameraId(0);
                intentIntegrator.setPrompt("SCAN");
                intentIntegrator.setBarcodeImageEnabled(false);
                intentIntegrator.initiateScan();
            }
        });
    }

    @OverrideprotectedvoidonActivityResult(int requestCode, int resultCode, Intent data) {

        IntentResultResult= IntentIntegrator.parseActivityResult(requestCode , resultCode ,data);
        if(Result != null){
            if(Result.getContents() == null){
                Log.d("MainActivity" , "cancelled scan");
                Toast.makeText(this, "cancelled", Toast.LENGTH_SHORT).show();
            }
            else {
                Log.d("MainActivity" , "Scanned");
                Toast.makeText(this,"Scanned -> " + Result.getContents(), Toast.LENGTH_SHORT).show();
            }
        }
        else {
            super.onActivityResult(requestCode , resultCode , data);
        }
    }
}

Android Coder