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MainActivity.kt
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MainActivity.kt
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package vipul.com.kotlincoroutinesadapterexample
import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import android.view.View
import android.widget.Toast
import com.jakewharton.retrofit2.adapter.kotlin.coroutines.CoroutineCallAdapterFactory
import kotlinx.android.synthetic.main.activity_main.*
import kotlinx.coroutines.*
import retrofit2.Response
import retrofit2.Retrofit
import retrofit2.converter.gson.GsonConverterFactory
import retrofit2.http.GET
class MainActivity : AppCompatActivity() {
private lateinit var uiDispatch: CoroutineDispatcher
private lateinit var job: Job
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val retrofit = Retrofit.Builder()
.baseUrl("https://example.com/")
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(CoroutineCallAdapterFactory())
.build()
val endpoint = retrofit.create(ApiEndpoint::class.java)
uiDispatch = Dispatchers.Main
job = Job()
GlobalScope.launch(Dispatchers.Main + job) {
progressBar.visibility = View.VISIBLE
delay(3000) // Mocking delay ;)
val peopleResponse = endpoint.getPeople().await()
if (peopleResponse.isSuccessful) {
peopleResponse.body()?.let {
Toast.makeText(this@MainActivity, it.toString(), Toast.LENGTH_LONG).show()
}
} else {
Toast.makeText(this@MainActivity, "Some error occurred!", Toast.LENGTH_LONG).show()
}
progressBar.visibility = View.GONE
}
}
override fun onDestroy() {
super.onDestroy()
if (!job.isCancelled) {
job.cancel()
}
}
interface ApiEndpoint {
@GET("http://www.json-generator.com/api/json/get")
fun getPeople(): Deferred<Response<People>>
}
data class Person(val name: String, val age: Int, val location: String)
data class People(val people: Array<Person>)
}