We have seen many apps in Android in which we will detect the object present in the image whether it may be any object. In this article, we will take a look at the implementation of image labeling in Android using Firebase ML Kit.
What we are going to build in this article?
We will be building a simple application in which we will be capturing an image of any object and from that, we will detect the objects present inside our image with the accuracy level. 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 below screenshot.
After clicking on this option on the next screen click on Connect to Firebase option to connect your app to Firebase.
Step 3: Adding dependency for language translation to build.gradle file
Navigate to the Gradle Scripts > build.gradle(Module:app) and add the below dependency in the dependencies section.
// dependency for firebase core.
// Firebase ML dependency
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 the 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 recycler view items
Navigate to the app > res > layout > Right-click on it > New > layout resource file and name it as result_rv_item and add 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 resultRVAdapter and add the below code to it. Comments are added inside the code to understand the code in more detail.
Step 9: 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.
Note: If you are facing the following NDK at ~/Library/Android/sdk/ndk-bundle did not have a source.properties file error then please refer to this article.