Android Open Source - digital-ocean-swimmer Regions Fragment

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License

The source code is released under:

MIT License

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Java Source Code

package com.yassirh.digitalocean.ui;
//from w ww. j a va 2  s. co  m
import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.app.ListFragment;
import android.support.v4.widget.SwipeRefreshLayout;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.ListView;

import com.yassirh.digitalocean.R;
import com.yassirh.digitalocean.model.Region;
import com.yassirh.digitalocean.service.RegionService;

public class RegionsFragment extends ListFragment implements Updatable, SwipeRefreshLayout.OnRefreshListener{
    
  RegionAdapter mRegionAdapter;
  List<Region> mRegions = new ArrayList<Region>();
  RegionService mRegionService;
  private SwipeRefreshLayout mSwipeRefreshLayout;
  private Handler mHandler = new Handler();
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
  }
  
  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState) {
    mRegionService = new RegionService(getActivity());
    update(this.getActivity());
    View layout = inflater.inflate(R.layout.fragment_regions, container, false);
    mSwipeRefreshLayout = (SwipeRefreshLayout) layout.findViewById(R.id.swipe_container);
    mSwipeRefreshLayout.setOnRefreshListener(this);
    mSwipeRefreshLayout.setColorScheme(R.color.blue_bright,
              R.color.green_light,
              R.color.orange_light,
              R.color.red_light);
    return layout;
  }
  
  @Override
  public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    final ListView listView = getListView();
    listView.setOnScrollListener(new OnScrollListener() {
      
      @Override
      public void onScrollStateChanged(AbsListView view, int scrollState) {
      }
      
      @Override
      public void onScroll(AbsListView view, int firstVisibleItem,
          int visibleItemCount, int totalItemCount) {
        boolean enable = false;
            if(listView != null && listView.getChildCount() > 0){
                boolean firstItemVisible = listView.getFirstVisiblePosition() == 0;
                boolean topOfFirstItemVisible = listView.getChildAt(0).getTop() == 0;
                enable = firstItemVisible && topOfFirstItemVisible;
            }
          mSwipeRefreshLayout.setEnabled(enable);
      }
    });
    registerForContextMenu(listView);
  }

  @Override
  public void update(Context context) {
    mRegions = mRegionService.getAllRegionsOrderedByName();
    mRegionAdapter = new RegionAdapter(this.getActivity(), mRegions);
    setListAdapter(mRegionAdapter);
  }
  
  @Override
  public void onRefresh() {
    mRegionService.getAllRegionsFromAPI(true);
    mHandler.post(refreshing);
  }
  
  private final Runnable refreshing = new Runnable(){
      public void run(){
          try {
            if(mRegionService.isRefreshing()){
              mHandler.postDelayed(this, 1000);   
            }else{
              mSwipeRefreshLayout.setRefreshing(false);
            }
          }
          catch (Exception e) {
              e.printStackTrace();
          }   
      }
  };
}

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