Created
August 2, 2020 18:20
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package com.vikas.paging3.view.remote | |
import android.annotation.SuppressLint | |
import android.os.Bundle | |
import android.view.View | |
import androidx.fragment.app.Fragment | |
import androidx.lifecycle.Observer | |
import androidx.lifecycle.lifecycleScope | |
import androidx.paging.ExperimentalPagingApi | |
import androidx.recyclerview.widget.GridLayoutManager | |
import androidx.recyclerview.widget.RecyclerView | |
import com.vikas.paging3.R | |
import com.vikas.paging3.view.remote.adapter.RemoteDoggoImageAdapter | |
import kotlinx.coroutines.flow.collectLatest | |
import kotlinx.coroutines.flow.distinctUntilChanged | |
import kotlinx.coroutines.launch | |
/** | |
* View to fetch the results from the remote api and directly shows in the recyclerview | |
* with lazy pagination enabled | |
*/ | |
@ExperimentalPagingApi | |
class RemoteFragment : Fragment(R.layout.fragment_remote) { | |
lateinit var rvDoggoRemote: RecyclerView | |
lateinit var remoteViewModel: RemoteViewModel | |
lateinit var adapter: RemoteDoggoImageAdapter | |
override fun onViewCreated(view: View, savedInstanceState: Bundle?) { | |
super.onViewCreated(view, savedInstanceState) | |
initMembers() | |
setUpViews(view) | |
fetchDoggoImages() | |
} | |
private fun fetchDoggoImages() { | |
lifecycleScope.launch { | |
remoteViewModel.fetchDoggoImages().distinctUntilChanged().collectLatest { | |
adapter.submitData(it) | |
} | |
} | |
} | |
//call this for rxjava observable based paging | |
@SuppressLint("CheckResult") | |
private fun fetchDoggoImagesObservable() { | |
remoteViewModel.fetchDoggoImagesObservable().subscribe { | |
lifecycleScope.launch { | |
adapter.submitData(it) | |
} | |
} | |
} | |
//call this for live data based paging | |
private fun fetchDoggoImagesLiveData() { | |
remoteViewModel.fetchDoggoImagesLiveData().observe(viewLifecycleOwner, Observer { | |
lifecycleScope.launch { | |
adapter.submitData(it) | |
} | |
}) | |
} | |
private fun initMembers() { | |
remoteViewModel = defaultViewModelProviderFactory.create(RemoteViewModel::class.java) | |
adapter = RemoteDoggoImageAdapter() | |
} | |
private fun setUpViews(view: View) { | |
rvDoggoRemote = view.findViewById(R.id.rvDoggoRemote) | |
rvDoggoRemote.layoutManager = GridLayoutManager(context, 2) | |
rvDoggoRemote.adapter = adapter | |
} | |
} |
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