Learn from this tutorial how to make Barcode Reader app in Android Studio version 1.4 in 10 steps:

Step 1Create New Android Project with Application name “Barcode Reader” and Minimum SDK, API9: Android 2.3 (Gingerbread).
Step 2 – Complete the code in activity_main.xml file:
Create a button for pressing to scan.

<Button android:id="@+id/scan_button"
    android:text="@string/scan" />

Add two Text Views to display your scanned information.

    android:layout_below="@id/scan_button" />
    android:layout_below="@id/scan_format" />

Step 3Add the button text “Scan” to strings.xml file.

<string name="scan">Scan</string>

Step 4Create New Package with name
Step 5Create New Java Class with name “IntentIntegrator“.
Step 6Create New Java Class with name “IntentResult“.

Project files:

 Barcode Reader project files

Step 7 – Complete the code in MainActivity.java

package com.example.toyo.barcodereader;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import com.google.zxing.integration.android.IntentIntegrator;
import com.google.zxing.integration.android.IntentResult;
import android.content.Intent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements OnClickListener {
    private Button scanBtn;
    private TextView formatTxt, contentTxt;

    protected void onCreate(Bundle savedInstanceState) {

        scanBtn = (Button)findViewById(R.id.scan_button);
        formatTxt = (TextView)findViewById(R.id.scan_format);
        contentTxt = (TextView)findViewById(R.id.scan_content);


    public void onClick(View v){
            IntentIntegrator scanIntegrator = new IntentIntegrator(this);

    public void onActivityResult(int requestCode, int resultCode, Intent intent) {
        IntentResult scanningResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);
        if (scanningResult != null) {
            String scanContent = scanningResult.getContents();
            String scanFormat = scanningResult.getFormatName();
            formatTxt.setText("FORMAT: " + scanFormat);
            contentTxt.setText("CONTENT: " + scanContent);
            Toast toast = Toast.makeText(getApplicationContext(),
                    "No scan data received!", Toast.LENGTH_SHORT);

Step 8 – Complete the code in IntentIntegrator.java

package com.google.zxing.integration.android;

import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.ActivityNotFoundException;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;

public class IntentIntegrator {

    public static final int REQUEST_CODE = 0x0000c0de; // Only use bottom 16 bits
    private static final String TAG = IntentIntegrator.class.getSimpleName();

    public static final String DEFAULT_TITLE = "Install Barcode Scanner?";
    public static final String DEFAULT_MESSAGE =
            "This application requires Barcode Scanner. Would you like to install it?";
    public static final String DEFAULT_YES = "Yes";
    public static final String DEFAULT_NO = "No";

    private static final String BS_PACKAGE = "com.google.zxing.client.android";
    private static final String BSPLUS_PACKAGE = "com.srowen.bs.android";

    // supported barcode formats
    public static final Collection<String> PRODUCT_CODE_TYPES = list("UPC_A", "UPC_E", "EAN_8", "EAN_13", "RSS_14");
    public static final Collection<String> ONE_D_CODE_TYPES =
            list("UPC_A", "UPC_E", "EAN_8", "EAN_13", "CODE_39", "CODE_93", "CODE_128",
                    "ITF", "RSS_14", "RSS_EXPANDED");
    public static final Collection<String> QR_CODE_TYPES = Collections.singleton("QR_CODE");
    public static final Collection<String> DATA_MATRIX_TYPES = Collections.singleton("DATA_MATRIX");

    public static final Collection<String> ALL_CODE_TYPES = null;

    public static final List<String> TARGET_BARCODE_SCANNER_ONLY = Collections.singletonList(BS_PACKAGE);
    public static final List<String> TARGET_ALL_KNOWN = list(
            BS_PACKAGE, // Barcode Scanner
            BSPLUS_PACKAGE, // Barcode Scanner+
            BSPLUS_PACKAGE + ".simple" // Barcode Scanner+ Simple
            // What else supports this intent?

    private final Activity activity;
    private String title;
    private String message;
    private String buttonYes;
    private String buttonNo;
    private List<String> targetApplications;
    private final Map<String,Object> moreExtras;

    public IntentIntegrator(Activity activity) {
        this.activity = activity;
        title = DEFAULT_TITLE;
        message = DEFAULT_MESSAGE;
        buttonYes = DEFAULT_YES;
        buttonNo = DEFAULT_NO;
        targetApplications = TARGET_ALL_KNOWN;
        moreExtras = new HashMap<String,Object>(3);

    public String getTitle() {
        return title;

    public void setTitle(String title) {
        this.title = title;

    public void setTitleByID(int titleID) {
        title = activity.getString(titleID);

    public String getMessage() {
        return message;

    public void setMessage(String message) {
        this.message = message;

    public void setMessageByID(int messageID) {
        message = activity.getString(messageID);

    public String getButtonYes() {
        return buttonYes;

    public void setButtonYes(String buttonYes) {
        this.buttonYes = buttonYes;

    public void setButtonYesByID(int buttonYesID) {
        buttonYes = activity.getString(buttonYesID);

    public String getButtonNo() {
        return buttonNo;

    public void setButtonNo(String buttonNo) {
        this.buttonNo = buttonNo;

    public void setButtonNoByID(int buttonNoID) {
        buttonNo = activity.getString(buttonNoID);

    public Collection<String> getTargetApplications() {
        return targetApplications;

    public final void setTargetApplications(List<String> targetApplications) {
        if (targetApplications.isEmpty()) {
            throw new IllegalArgumentException("No target applications");
        this.targetApplications = targetApplications;

    public void setSingleTargetApplication(String targetApplication) {
        this.targetApplications = Collections.singletonList(targetApplication);

    public Map<String,?> getMoreExtras() {
        return moreExtras;

    public final void addExtra(String key, Object value) {
        moreExtras.put(key, value);

    public final AlertDialog initiateScan() {
        return initiateScan(ALL_CODE_TYPES);

    public final AlertDialog initiateScan(Collection<String> desiredBarcodeFormats) {
        Intent intentScan = new Intent(BS_PACKAGE + ".SCAN");

        // check which types of codes to scan for
        if (desiredBarcodeFormats != null) {
            // set the desired barcode types
            StringBuilder joinedByComma = new StringBuilder();
            for (String format : desiredBarcodeFormats) {
                if (joinedByComma.length() > 0) {
            intentScan.putExtra("SCAN_FORMATS", joinedByComma.toString());

        String targetAppPackage = findTargetAppPackage(intentScan);
        if (targetAppPackage == null) {
            return showDownloadDialog();
        startActivityForResult(intentScan, REQUEST_CODE);
        return null;

    protected void startActivityForResult(Intent intent, int code) {
        activity.startActivityForResult(intent, code);

    private String findTargetAppPackage(Intent intent) {
        PackageManager pm = activity.getPackageManager();
        List<ResolveInfo> availableApps = pm.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
        if (availableApps != null) {
            for (ResolveInfo availableApp : availableApps) {
                String packageName = availableApp.activityInfo.packageName;
                if (targetApplications.contains(packageName)) {
                    return packageName;
        return null;

    private AlertDialog showDownloadDialog() {
        AlertDialog.Builder downloadDialog = new AlertDialog.Builder(activity);
        downloadDialog.setPositiveButton(buttonYes, new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialogInterface, int i) {
                String packageName = targetApplications.get(0);
                Uri uri = Uri.parse("market://details?id=" + packageName);
                Intent intent = new Intent(Intent.ACTION_VIEW, uri);
                try {
                } catch (ActivityNotFoundException anfe) {
                    // Hmm, market is not installed
                    Log.w(TAG, "Google Play is not installed; cannot install " + packageName);
        downloadDialog.setNegativeButton(buttonNo, new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialogInterface, int i) {}
        return downloadDialog.show();

    public static IntentResult parseActivityResult(int requestCode, int resultCode, Intent intent) {
        if (requestCode == REQUEST_CODE) {
            if (resultCode == Activity.RESULT_OK) {
                String contents = intent.getStringExtra("SCAN_RESULT");
                String formatName = intent.getStringExtra("SCAN_RESULT_FORMAT");
                byte[] rawBytes = intent.getByteArrayExtra("SCAN_RESULT_BYTES");
                int intentOrientation = intent.getIntExtra("SCAN_RESULT_ORIENTATION", Integer.MIN_VALUE);
                Integer orientation = intentOrientation == Integer.MIN_VALUE ? null : intentOrientation;
                String errorCorrectionLevel = intent.getStringExtra("SCAN_RESULT_ERROR_CORRECTION_LEVEL");
                return new IntentResult(contents,
            return new IntentResult();
        return null;

    public final AlertDialog shareText(CharSequence text, CharSequence type) {
        Intent intent = new Intent();
        intent.setAction(BS_PACKAGE + ".ENCODE");
        intent.putExtra("ENCODE_TYPE", type);
        intent.putExtra("ENCODE_DATA", text);
        String targetAppPackage = findTargetAppPackage(intent);
        if (targetAppPackage == null) {
            return showDownloadDialog();
        return null;

    private static List<String> list(String... values) {
        return Collections.unmodifiableList(Arrays.asList(values));

    private void attachMoreExtras(Intent intent) {
        for (Map.Entry<String,Object> entry : moreExtras.entrySet()) {
            String key = entry.getKey();
            Object value = entry.getValue();
            // Kind of hacky
            if (value instanceof Integer) {
                intent.putExtra(key, (Integer) value);
            } else if (value instanceof Long) {
                intent.putExtra(key, (Long) value);
            } else if (value instanceof Boolean) {
                intent.putExtra(key, (Boolean) value);
            } else if (value instanceof Double) {
                intent.putExtra(key, (Double) value);
            } else if (value instanceof Float) {
                intent.putExtra(key, (Float) value);
            } else if (value instanceof Bundle) {
                intent.putExtra(key, (Bundle) value);
            } else {
                intent.putExtra(key, value.toString());

Step 9 – Complete the code in IntentResult.java

package com.google.zxing.integration.android;

public final class IntentResult {

    private final String contents;
    private final String formatName;
    private final byte[] rawBytes;
    private final Integer orientation;
    private final String errorCorrectionLevel;

    IntentResult() {
        this(null, null, null, null, null);

    IntentResult(String contents,
                 String formatName,
                 byte[] rawBytes,
                 Integer orientation,
                 String errorCorrectionLevel) {
        this.contents = contents;
        this.formatName = formatName;
        this.rawBytes = rawBytes;
        this.orientation = orientation;
        this.errorCorrectionLevel = errorCorrectionLevel;

    public String getContents() {
        return contents;

    public String getFormatName() {
        return formatName;

    public byte[] getRawBytes() {
        return rawBytes;

    public Integer getOrientation() {
        return orientation;

    public String getErrorCorrectionLevel() {
        return errorCorrectionLevel;

    public String toString() {
        StringBuilder dialogText = new StringBuilder(100);
        dialogText.append("Format: ").append(formatName).append('\n');
        dialogText.append("Contents: ").append(contents).append('\n');
        int rawBytesLength = rawBytes == null ? 0 : rawBytes.length;
        dialogText.append("Raw bytes: (").append(rawBytesLength).append(" bytes)\n");
        dialogText.append("Orientation: ").append(orientation).append('\n');
        dialogText.append("EC level: ").append(errorCorrectionLevel).append('\n');
        return dialogText.toString();


Step 10Export app from Android Studio.
Run your exported app on a device instead of an emulator and feel free to scan any barcode.
Watch the video tutorial to create Barcode Reader app in Android Studio version 1.4:

For further questions leave a message.

Exemple: scan this barcode

Scan barcode

You should see the text:
found book
CONTENT: 9780123456786

Download app-release.apk from here and install it on your device to scan barcodes.


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import com.google.zxing.integration.android.IntentIntegrator;
import com.google.zxing.integration.android.IntentResult;

is not recognised as zxing library is not imported anywhere – where to do this?

    On app, right click -> New -> Package and enter the name:
    (check to be written correctly).
    Follow tutorial above step by step and you’ll see is working.

      Hello, can you please post a video on how i can implement mysql to save bar codes data and retrieve them also? Thank you


    You can download project files with source code from here:

      I am a beginner , when I tried with your code , see the error report . pls help me .
      Information:Gradle tasks [:app:assembleDebug]
      :app:preBuild UP-TO-DATE
      :app:preDebugBuild UP-TO-DATE
      :app:preReleaseBuild UP-TO-DATE
      :app:prepareComAndroidSupportAnimatedVectorDrawable2400Library UP-TO-DATE
      :app:prepareComAndroidSupportAppcompatV72400Library UP-TO-DATE
      :app:prepareComAndroidSupportSupportV42400Library UP-TO-DATE
      :app:prepareComAndroidSupportSupportVectorDrawable2400Library UP-TO-DATE
      :app:compileDebugAidl UP-TO-DATE
      :app:compileDebugRenderscript UP-TO-DATE
      :app:mergeDebugShaders UP-TO-DATE
      :app:compileDebugShaders UP-TO-DATE
      :app:generateDebugAssets UP-TO-DATE
      :app:mergeDebugAssets UP-TO-DATE
      :app:generateDebugResValues UP-TO-DATE
      :app:generateDebugResources UP-TO-DATE
      Error:Error: Unsupported type ‘Button’
      :app:mergeDebugResources FAILED
      Error:Execution failed for task ‘:app:mergeDebugResources’.
      > C:UsersunniAndroidStudioProjectsMTANSBSCANappsrcmainresvalues-w820dpdimens.xml: Error: Unsupported type ‘Button’
      Information:BUILD FAILED
      Information:Total time: 10.454 secs
      Information:2 errors
      Information:0 warnings
      Information:See complete output in console

      thank u.

      i want a source code like ,
      once if u scanned product, if the product is exist .
      it should show popup or else
      it should add that product to master table..
      plz help me…

Nice work, its helps me lot, thank you

This was a really great tutorial! Helped loads with my project. Thanks!

how to connect barcode reader with sql light database..

    You don’t “connect” it… You get a value from the reader and you can do whatever you want with it. Even save it to a database. Database is a different topic which you can find with Google yourself…

Hi, can i save this barcode value for verification?

    Yes. You can. Why wouldn’t you?

hi! thanks for a wonderful tutorial. What about if I want to do a standalone barcode reader? what changes should I make to the code? Many thanks, again.

Thank you!! Very simple and it works!!!

What I have to do if i would like create a barcode scanner without an another application? Can I do it? Thank

how to show the list of scanned barcodes on the same screen

hello app asks for Install Barcode Scanner ? After confirming installation nothing happens…

when i am making this source code to library…it is showing this error
anyone could help??

Error:Dependency io.realm:app:1.0.0 on project mobile resolves to an APK archive which is not supported as a compilation dependency. File: C:\Users\s881979\Documents\Source\DeviceInventory\app\build\outputs\apk\app-release-unsigned.apk

it show me message your applicatioin requires barcode scanner

Beginner here … I follow the steps and try it on other barcode’s , it work’s . Got some question how i get some result like grocery item price by just scanning the bar code (database check) , does’t possible ? .

can you give me a link to that , I will appreciate it tnx.

Thank’s to uploader

Great Tutorial..But you forgot about the Permissions required in the Android Manifest

How would I change the layout of Scanning Barcode?

Error:Unknown host ‘services.gradle.org’. You may need to adjust the proxy settings in Gradle.
Learn about configuring HTTP proxies in Gradle
I am facing this problem .Plz help me

can the scanner read QR code?

Please send the android studio source code for Finger print image verification

After the reveal of the code , how can I make the app able to afford ( extract) the product’s infos ( brand ; type , headquarters ‘ phone number) from the database installed in the server..?

Hi…. can I know on which part that i can added orientation for scanner that support for portrait and landscape?

Thanks 🙂

can I run this app without any external app?
pls respond

how can I use this barcode scanner with front Camera.

can you please show me the output of above code

and very thanks for your code …

But it not run in my android studio
I thik that my version is 3.2 and your code writen by version 1.4

Can i change this code for my current version?
And have you new code for this version?

    Hi Naser. I recently implement this tutorial on Android Studio 3.1.3 in it works fine. I can send you my simple project if you want.

I test your code in android studio 3.1.3 and it works fine. thank you so much. you save my time.

Nice. It is working

Can i implement it within Fragment?

please provide me screenshots of layouts

can you please show me the output of above code

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