Android Open Source - Qachee Character List Fragment

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License

The source code is released under:

Apache License

Java Source Code

package com.qachee.sample.fragment;
/*  ww w .  j  a va 2s .  c om*/
import android.app.ProgressDialog;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;

import com.qachee.QacheeManager;
import com.qachee.sample.DemoLoader;
import com.qachee.sample.R;
import com.qachee.sample.adapter.CharacterAdapter;
import com.qachee.sample.domain.Character;
import com.qachee.sample.task.SafeAsyncTask;

import java.util.List;

/**
 * Created by nicolas on 2/17/14.
 */
public class CharacterListFragment extends Fragment implements AdapterView.OnItemClickListener {

  private CharacterAdapter adapter;
  private ListView listView;


  public static Fragment newInstance() {
    return new CharacterListFragment();
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
                           Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.fragment_main, container, false);
    listView = (ListView) rootView.findViewById(R.id.list_view);
    listView.setOnItemClickListener(this);

    return rootView;
  }

  @Override
  public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    loadList();
  }

  private void loadList() {
    List<Character> list = QacheeManager.getInstance().toArray(Character.class);

    if (list == null || list.isEmpty()) {
      new DemoTask(getActivity()).execute();
    } else {
      adapter = new CharacterAdapter(list);
      listView.setAdapter(adapter);
    }
  }

  @Override
  public void onItemClick(AdapterView<?> adapterView, View view, int pos, long l) {

    Character selectedCharacter = (Character) listView.getItemAtPosition(pos);

    selectedCharacter = (Character) QacheeManager.getInstance().get(selectedCharacter, false);
    replace(getActivity(), CharacterEditFragment.newInstance(selectedCharacter.getKey()));


    // OR...
//    String selectedItemKey = ((Character) QacheeManager.getInstance().get(selectedCharacter, false)).getKey();
//    replace(getActivity(), CharacterEditFragment.newInstance(selectedItemKey);
  }


  public void replace(FragmentActivity activity, Fragment newFragment) {
    FragmentManager fragmentManager = activity.getSupportFragmentManager();
    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
    fragmentTransaction.addToBackStack(null);

    fragmentTransaction.replace(R.id.container, newFragment).commit();
  }


  /**
   * DemoTask
   */
  public class DemoTask extends SafeAsyncTask<List<Character>> {

    private Context context;
    private ProgressDialog dialog;

    public DemoTask(Context context) {
      this.context = context;
    }

    @Override
    protected void onPreExecute() throws Exception {
      super.onPreExecute();
      dialog = ProgressDialog.show(context, "", context.getString(R.string.loading_data));
    }

    @Override
    public List<Character> call() throws Exception {
      Thread.sleep(3000); // emulates Long call to a Web API.
      QacheeManager.getInstance().removeAll(Character.class);
      return DemoLoader.createData();
    }

    @Override
    protected void onSuccess(List<Character> characters) throws Exception {
      super.onSuccess(characters);

      QacheeManager.getInstance().addList(characters);
      loadList();
    }

    @Override
    protected void onFinally() throws RuntimeException {
      super.onFinally();
      dialog.dismiss();
    }
  }


}

Java Source Code List

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