How to set up the ability to scan QR code in Android apps on smartphones
3 minute(s) read
Published on: Aug 18, 2021
Updated on: Dec 14, 2021
It is noteworthy that today Android applications have many capabilities, of which QR scanner and barcode are part of them. Today, Android apps support these features, and users can use their mobile phones as a barcode readers. With the support of Android OS for the ability to read barcodes, you can read the barcodes of many products and do the necessary and related work. In this article, we want to create a program that shows how to scan and QR. If you want to know about them, it is recommended to follow this article.
1- We will create a new project in Android Studio.
2- Specify the appropriate and desired names for the package and API.
3- You must specify the name and type in the newly created activity name window.
4- In the open window, you can select your desired icon and image for the program you want to create in the next step.
5- To design the application ( in German: Gestalten Sie die Anwendung ) perfectly, you must create a BlankActivity.
6- There is a layout inside the res folder where we must create an XML file and do the Activity related designs inside.
7- Inside the XML file, we create two buttons, one of which will be used for the listener and the other for the Activity.
8- Then, we must create a Java class to make our settings.
9- To be able to display the desired layer, we do the following:
10- It should be noted that the library com.google.zxing.client.android.example is used for the scan, and if the application cannot be scanned, a message will be displayed in the form of a dialog to the user, which must first Install a scalable application.
11- The results of the checks will be displayed in the form of a toast message.
12- We run the program.
13- By running the program, we will see that two buttons are displayed, and we can select each of them according to our needs and do our job.
What is Quick Response?
QR code is a two-dimensional code that can be read by using smartphones or barcode readers. You can link directly to email, website, text, phone number, account, etc., and leave by reading this type of code.
These codes can be easily found in magazines, newspapers, websites, business cards, etc. By scanning them, they can be easily connected to the desired source.
Also, these types of barcodes can be placed on the packaging of different types of products.
The use of this type of code in advertising and marketing because phones are used more today, have a great impact and can easily lead to the growth and development of the business because today phones are more in the hands of users. They are mostly used, so it is easy to scan these types of barcodes using phones, and all users can easily do so.
-A barcode is a set of long black bars or lines placed next to each other. Barcodes are simply data transmissions via light waves.
How can we generate a barcode?
To generate a barcode and use it for your products, you can check the site http://goqr.me/ and use it to generate a barcode.
You can also generate a barcode by entering the following codes:
Zxing Library is used to insert and add barcodes in programs and applications designed using Android Studio.
1- To do this, we must put the following code in the dependencies section of the Build.gradle file.
2- compile 'com.journeyapps:
3- Then, we must sync the project.
4- In the activity_main.xml file, we put the codes inserted below.
5- We should also put the following code in the MainActivity.java file.
6- We should also put the following code in the MainActivity.java file.DotNek Android development services