Android Open Source - spots My Groups List Activity

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License

The source code is released under:

MIT License

Java Source Code

package com.dcc.matc89.spots.activity;
// w ww .  j av  a 2  s .co m
import java.io.Serializable;
import java.util.List;

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.TextView;

import com.dcc.matc89.spots.R;
import com.dcc.matc89.spots.model.Group;
import com.dcc.matc89.spots.model.Spot;
import com.dcc.matc89.spots.model.User;
import com.dcc.matc89.spots.network.FetchGroups;
import com.dcc.matc89.spots.network.FetchGroups.OnGroupsReceiver;

/** Same of GroupsListActivity. This activity shouldn't exist because it is a copy of GroupsListActivity plus Login functionality. */
public class MyGroupsListActivity extends LoginActionBarActivity {

  private static final int CODE_ADD_GROUP = 1;
  public static final String SPOT_KEY = "spot_key";
  public static final String USER_KEY = "user_key";
  public static final String GROUP_SELECTED = "group_selected";
  public static final String SELECT_GROUP = "select_group";

  private TextView mTextEmpty;
  private View mProgressLoading;
  private ListView mListView;

  private Spot mSpot;
  private User mUser;
  private boolean mIsSelectingGroup;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_group_list);

    mTextEmpty = (TextView) findViewById(R.id.group_list_empty);
    mProgressLoading = findViewById(R.id.pgs_groups);
    mListView = (ListView) findViewById(R.id.list);
    mListView.setOnItemClickListener(onItemClickListener);

    mSpot = null;
    mUser = User.getCurrentUser(this);

    mIsSelectingGroup = getIntent().getBooleanExtra(SELECT_GROUP, false);

    // Show the Up button in the action bar.
    setupActionBar();

  }

  @Override
  protected void onResume() {
    super.onResume();

    loadGroups();
  }

  /**
   * Set up the {@link android.app.ActionBar}.
   */
  private void setupActionBar() {
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    if(!mIsSelectingGroup)
      getMenuInflater().inflate(R.menu.group_list, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case android.R.id.home:
      // This ID represents the Home or Up button. In the case of this
      // activity, the Up button is shown. Use NavUtils to allow users
      // to navigate up one level in the application structure. For
      // more details, see the Navigation pattern on Android Design:
      //
      // http://developer.android.com/design/patterns/navigation.html#up-vs-back
      //
      NavUtils.navigateUpFromSameTask(this);
      return true;
    case R.id.action_group_add:
      Intent i = new Intent(this, GroupEditActivity.class);
      startActivityForResult(i, CODE_ADD_GROUP);
    }
    return super.onOptionsItemSelected(item);
  }

  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if(requestCode == CODE_ADD_GROUP && resultCode == RESULT_OK){
      // TODO Reload list
    }
  }

  private OnItemClickListener onItemClickListener = new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> adapterView, View view, int position,
        long id) {
      Serializable group = (Serializable) adapterView.getAdapter().getItem(position);
      if(mIsSelectingGroup){
        setResult(RESULT_OK, new Intent().putExtra(GROUP_SELECTED, group));
        finish();
      } else{
        Intent i = new Intent(MyGroupsListActivity.this, GroupDetailActivity.class);
        i.putExtra(GroupDetailActivity.GROUP_KEY, group);
        startActivity(i);
      }
    }
  };

  private void showGroups(List<Group> result) {
    mProgressLoading.setVisibility(View.INVISIBLE);
    if(result == null || result.isEmpty())
      mTextEmpty.setVisibility(View.VISIBLE);
    else{
      mTextEmpty.setVisibility(View.INVISIBLE);
      ListAdapter adapter = new ArrayAdapter<Group>(MyGroupsListActivity.this, android.R.layout.simple_list_item_1, result);
      mListView.setAdapter(adapter);
    }
  }

  private void loadGroups() {
    if(mSpot != null){
      new FetchGroups().getGroupsFromSpot(onGroupsReceiver, mSpot.getId());
    } else if(mUser != null){
      new FetchGroups().getGroupsFromUser(onGroupsReceiver, mUser.getId());
    }
  }

  private OnGroupsReceiver onGroupsReceiver = new OnGroupsReceiver() {

    @Override
    public void onGroupsReceived(List<Group> groups) {
      showGroups(groups);
    }
  };

  @Override
  protected void onLoggedIn(User user) {
    mUser = user;
    loadGroups();
  }

}

Java Source Code List

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