PotensiActivity.java

package com.company.whitelord.sibumdes;
 
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.widget.Toast;
 
import com.company.whitelord.sibumdes.Adapter.AdapterPotensi;
import com.company.whitelord.sibumdes.Model.DataTemp;
import com.company.whitelord.sibumdes.Model.Potensi;
import com.company.whitelord.sibumdes.Rest.ApiClient;
import com.company.whitelord.sibumdes.Rest.ApiInterface;
import com.company.whitelord.sibumdes.Rest.DesaItem;
import com.company.whitelord.sibumdes.Rest.NewResponse;
 
 
import java.util.ArrayList;
import java.util.List;
 
import retrofit2.Call;
import retrofit2.Callback;
 
public class PotensiActivity extends AppCompatActivity {
 
    RecyclerView recyclerView;
    List<DesaItem> data_desa  = new ArrayList<>();
    AdapterPotensi adapterPotensi;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_potensi);
      
        adapterPotensi = new AdapterPotensi(PotensiActivity.this , data_desa, R.layout.layout_item_potensi);
 
        recyclerView = (RecyclerView)findViewById(R.id.idRecy);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        recyclerView.setAdapter(adapterPotensi);
 
        if(savedInstanceState != null){
            data_desa = new ArrayList<>();
            data_desa.addAll(savedInstanceState.getParcelableArrayList("position"));
            adapterPotensi.notifyDataSetChanged();
        } else {
            tampilData();
        }
    }
 
    public void tampilData(){
        ApiInterface api = ApiClient.getInstance();
        Call<NewResponse> desaCall = api.request_show_all_desa();
        desaCall.enqueue(new Callback<NewResponse>() {
            @Override
            public void onResponse(Call<NewResponse> call, retrofit2.Response<NewResponse> response) {
                if(response.isSuccessful()){
                    data_desa = new ArrayList<>();
                    data_desa.addAll(response.body().getDesa());
                    boolean status = response.body().isStatus();
                    if(status){
                        adapterPotensi.notifyDataSetChanged();
                    } else {
                        Toast.makeText(getApplicationContext(),"Tidak ada data",Toast.LENGTH_SHORT).show();
                    }
                }
            }
 
            @Override
            public void onFailure(Call<NewResponse> call, Throwable t) {
                t.printStackTrace();
            }
        });
    }
 
    @Override
    protected void onSaveInstanceState(Bundle outState) {
        outState.putParcelableArrayList("position", data_desa);
        super.onSaveInstanceState(outState);
    }
}