HiltAndroidDemo

Step 1

In Root build.gradel

  ext {
    hilt_version = '2.38.1'
  }
 
  dependencies {
    classpath "com.google.dagger:hilt-android-gradle-plugin:$hilt_version"
  }

Step 2

In project build.gradel

plugins {
   id 'com.android.application'
   id 'kotlin-android'
   id 'kotlin-kapt'
   id 'kotlin-parcelize'
   id 'dagger.hilt.android.plugin'
}

dependencies {
    // Hilt
    // dagger hilt
    implementation "com.google.dagger:hilt-android:$hilt_version"
    kapt "com.google.dagger:hilt-android-compiler:$hilt_version"
}

Step 3

@HiltAndroidApp
class BaseApplication: Application()

Step 4

Create Module class

@Module
@InstallIn(SingletonComponent::class)
class Module {
    @Singleton
    @Provides
    fun getIndianFood(): IndianFood {
        return IndianFood()
    }
    @Provides
    fun getChineseFood(): ChineseFood {
        return ChineseFood()
    }
}

Step 5

Main Usage

@AndroidEntryPoint
class MainActivity : AppCompatActivity() {
    @Inject
    lateinit var indianFood: IndianFood

    @Inject
    lateinit var chineseFood: ChineseFood

    lateinit var binding: ActivityMainBinding

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding.root)
        binding.btIndian.setOnClickListener {
            binding.tvStatus.text =
                "Food Details:${indianFood.foodType()},${indianFood.foodCount()}"
            indianFood.specialFood()
        }
        binding.btChinese.setOnClickListener {
            binding.tvStatus.text =
                "Food Details:${chineseFood.foodType()},${chineseFood.foodCount()}"
        }

        binding.btNext.setOnClickListener {
            startActivity(Intent(this@MainActivity, MainActivity2::class.java))
        }
    }
}

Note: IF we dont define Module class then we can call it using below in desire class

@Inject constructor()
@Inject constructor(@ApplicationContext context: Context)

Eg:

class IndianFood @Inject constructor()