What is Koin in Android SDK?

Koin is a lightweight and easy-to-use dependency injection framework for Android applications. It simplifies the process of managing dependencies in your app, allowing you to easily create and inject instances without the need for complex configurations or boilerplate code. Koin makes it easier for developers to structure their projects, test code, and manage scopes effectively, providing a Kotlin-centric approach for modern Android development.

With Koin, you can define modules that contain your dependencies and load them at the application start, making your code cleaner and more maintainable.

Here is a simple example of using Koin in an Android project:


        // Adding Koin dependencies in build.gradle
        implementation "io.insert-koin:koin-android:2.2.2"

        // Define a Kotlin class
        class ApiService {
            fun getData() = "Data from API"
        }

        // Define a Koin module
        val appModule = module {
            single { ApiService() }  // Declare a singleton
        }

        // Start Koin
        class MyApplication : Application() {
            override fun onCreate() {
                super.onCreate()
                startKoin {
                    androidContext(this@MyApplication)
                    modules(appModule)
                }
            }
        }

        // Injecting dependencies in an Activity
        class MainActivity : AppCompatActivity() {
            private val apiService: ApiService by inject()

            override fun onCreate(savedInstanceState: Bundle?) {
                super.onCreate(savedInstanceState)
                setContentView(R.layout.activity_main)
                Log.d("MainActivity", apiService.getData())
            }
        }

What is Koin in Android SDK?

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What is Koin in Android SDK?

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