Moster_02 get data from web service

[AnelCC]

Get data from web service

1. Acquire data in a repository class

Check the Respository Here

2. Share data with LiveData objects

The ViewModel is simply passing that LiveData object back to the user interface.
And the fragment, that is the user interface,
is only responsible for managing the presentation

private val dataRepo = MonsterRepository(app)
val monsterData = dataRepo.monsterData

3. Network permissions and status

    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

4. Add Retrofit and coroutine dependencies

view models and data, coroutines and retrofit2

implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.0"
implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
implementation 'com.squareup.retrofit2:converter-gson:2.6.0'
implementation 'com.squareup.retrofit2:converter-moshi:2.6.0'
implementation 'com.squareup.retrofit2:retrofit:2.6.0'

5. Define a Retrofit interface

Add the keyword suspend.
That means that this function is designed to be called from with a coroutine.
Coroutines can run either on the UI thread or in a background thread, but for a function to be part of a coroutine call, it must have the suspend keyword at the beginning of the function declaration.

6. Retrieve remote data with Retrofit