QR codes are two-dimensional barcodes that store data and can be read by imaging devices like cameras. The document outlines how to create an Android project for scanning QR codes using the ZXing library and provides coding dependencies and user interface design details. It emphasizes the integration of a user-friendly QR/barcode scanning layout within the app.

2. What is a QR Code?
QR Code stands for Quick Response Code.
QR Code is actually a 2 dimensional
barcode. A QR Code consist of black squares
over a white background, and it can store
some data, which can be read by camera or
other imaging devices. Below you can see a
sample QR Code.

3. QR Code And BarCode

4. Generating a QR Code
A QR code consists of black squares arranged in a square grid on a
white background, which can be read by an imaging device such as
a camera, and processed using Reed–Solomon error correction until
the image can be appropriately interpreted.

5. Creating a new Project
❖ As always create a new
Android Studio project.
❖ I just created Android QR
Code Scanner.

6. Adding Zxing Library
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})

7. Now sync your project with gradle.
compile 'com.android.support:appcompat-v7:25.0.1'
testCompile 'junit:junit:4.12'
//add this dependency
compile 'com.journeyapps:zxing-android-embedded:3.4.0'
}

8. Creating User Interface
We have two values (Name, Address) in the QR
Code that we generated. So I designed the
following layout that will display Name and
Address.
We also have a button in the layout that will
open up camera for scanning the QR Code.

9. QR Barcode Scanner Android App Details
User-friendly QR/Barcode scanning layout developed in Android
Studio
https://abhiandroid.com/sourcecode/qrbarcode