How to Create Google Lens Application in Android?
We have seen the new Google Lens application in which we can capture images of any product and from that image, we can get to see the search results of that product which we will display inside our application.
What we are going to build in this article?
We will be building a simple application in which we will be capturing an image from our device camera and after that, we will click on the Button to get the results for that product. A sample video is given below to get an idea about what we are going to do in this article. Note that we are going to implement this project using the Java language.
Step by Step Implementation
Step 1: Create a New Project
To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. Note that select Java as the programming language.
Step 2: Connect your app to Firebase
After creating a new project in Android Studio connect your app to Firebase. For connecting your app to firebase. Navigate to Tools on the top bar. After that click on Firebase. A new window will open on the right side. Inside that window click on Firebase ML and then click on Use Firebase ML kit in Android. You can see the option in the below screenshot.
After clicking on this option you will get to see the below screen. On this screen click on Connect to Firebase option to connect your app to Firebase. You will get to see the below screen.
Click on Connect option to connect your app to Firebase and add the below dependency to your build.gradle file.
Step 3: Adding dependency for language translation to build.gradle file
Navigate to the app > Gradle Scripts > build.gradle file and add the below code to it. Comments are added in the code to get to know in more detail.
// firebase dependencies.
// below line is used for volley library
// below line is used for image loading library
Step 4: Adding permissions to access the Internet and meta-data in your Android Apps AndroidManifest file
Navigate to the app > AndroidManifest.xml file and add the below code to it. Comments are added in the code to get to know in more detail.
Add the below line inside your application tag.
Below is the complete code for the AndroidManifest.xml file:
Step 5: Working with activity_main.xml file
Navigate to the app > res > layout > activity_main.xml and add the below code to that file. Below is the code for the activity_main.xml file.
Step 6: Creating a modal class for storing our data
Navigate to the app > java > your app’s package name > Right-click on it > New > Java class and name your class as DataModal and add the below code to it. Comments are added inside the code to understand the code in more detail.
Step 7: Creating a layout file for displaying our RecyclerView items
Navigate to the app > res > layout > Right-click on it > New > layout resource file and name it as search_result_rv_item and add the below code to it.
Step 8: Creating an adapter class for our RecyclerView
Navigate to the app > java > your app’s package name > Right-click on it > New > Java class and name it as SearchResultsRVAdapter and add the below code to it.
Step 9: Generating your API key
Go to the site https://serpapi.com/search-api and create your account with your Google account. This is a similar process as you signup on Geeks for Geeks. While generating your API key make sure to select the free trial option and proceed further. After going to the site shown above you will get to see the below screen. Simply sign in with your credentials and proceed further.
After proceeding further you have to simply Navigate to the My Account > Dashboard option to open the below screen. On this screen, you will get to see your API key.
Step 10: Working with the MainActivity.java file
Go to the MainActivity.java file and refer to the following code. Below is the code for the MainActivity.java file. Comments are added inside the code to understand the code in more detail.
Now run your app and see the output of the app. Make sure to change your API key before running the app.