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",
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;
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.


    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:\Users\unni\AndroidStudioProjects\MTANSBSCAN\app\src\main\res\values-w820dp\dimens.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 🙂

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