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SingleNetworkCallActivity.kt
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SingleNetworkCallActivity.kt
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package com.mindorks.kotlinFlow.learn.retrofit.single
import android.os.Bundle
import android.view.View
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.Observer
import androidx.lifecycle.ViewModelProviders
import androidx.recyclerview.widget.DividerItemDecoration
import androidx.recyclerview.widget.LinearLayoutManager
import com.mindorks.kotlinFlow.R
import com.mindorks.kotlinFlow.data.api.ApiHelperImpl
import com.mindorks.kotlinFlow.data.api.RetrofitBuilder
import com.mindorks.kotlinFlow.data.local.DatabaseBuilder
import com.mindorks.kotlinFlow.data.local.DatabaseHelperImpl
import com.mindorks.kotlinFlow.data.model.ApiUser
import com.mindorks.kotlinFlow.learn.base.ApiUserAdapter
import com.mindorks.kotlinFlow.utils.Status
import com.mindorks.kotlinFlow.utils.ViewModelFactory
import kotlinx.android.synthetic.main.activity_recycler_view.*
class SingleNetworkCallActivity : AppCompatActivity() {
private lateinit var viewModel: SingleNetworkCallViewModel
private lateinit var adapter: ApiUserAdapter
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_recycler_view)
setupUI()
setupViewModel()
setupObserver()
}
private fun setupUI() {
recyclerView.layoutManager = LinearLayoutManager(this)
adapter =
ApiUserAdapter(
arrayListOf()
)
recyclerView.addItemDecoration(
DividerItemDecoration(
recyclerView.context,
(recyclerView.layoutManager as LinearLayoutManager).orientation
)
)
recyclerView.adapter = adapter
}
private fun setupObserver() {
viewModel.getUsers().observe(this, Observer {
when (it.status) {
Status.SUCCESS -> {
progressBar.visibility = View.GONE
it.data?.let { users -> renderList(users) }
recyclerView.visibility = View.VISIBLE
}
Status.LOADING -> {
progressBar.visibility = View.VISIBLE
recyclerView.visibility = View.GONE
}
Status.ERROR -> {
//Handle Error
progressBar.visibility = View.GONE
Toast.makeText(this, it.message, Toast.LENGTH_SHORT).show()
}
}
})
}
private fun renderList(users: List<ApiUser>) {
adapter.addData(users)
adapter.notifyDataSetChanged()
}
private fun setupViewModel() {
viewModel = ViewModelProviders.of(
this,
ViewModelFactory(
ApiHelperImpl(RetrofitBuilder.apiService),
DatabaseHelperImpl(DatabaseBuilder.getInstance(applicationContext))
)
).get(SingleNetworkCallViewModel::class.java)
}
}