Android Open Source - sami-android-demo Messages Activity

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License

The source code is released under:
Apache License
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Java Source Code

package io.samsungsami.androidclient;
/*from   w  w  w.j a  va2s  . c  om*/
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Map.Entry;

import com.samihub.androidclient.R;

import io.samsungsami.model.NormalizedMessage;
import io.samsungsami.model.NormalizedMessagesEnvelope;
import io.samsungsami.android.Sami;
import io.samsungsami.android.SamiClient;
import io.samsungsami.android.SamiStack;
import io.samsungsami.android.api.Call;
import io.samsungsami.android.api.Callback;
import io.samsungsami.android.api.Code;
import io.samsungsami.client.ApiException;
import android.app.Activity;
import android.app.ActionBar;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.support.v13.app.FragmentPagerAdapter;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class MessagesActivity extends Activity implements ActionBar.TabListener, SamiClient {
  public static final int SECTION_DETAILS = 1;
  static MessagesActivity instance;
  Sami sami;
  // Message list
  static GenericAdapter messagesAdapter;
  static ListView messagesListView;

  /**
   * The {@link android.support.v4.view.PagerAdapter} that will provide
   * fragments for each of the sections. We use a {@link FragmentPagerAdapter}
   * derivative, which will keep every loaded fragment in memory. If this
   * becomes too memory intensive, it may be best to switch to a
   * {@link android.support.v13.app.FragmentStatePagerAdapter}.
   */
  SectionsPagerAdapter mSectionsPagerAdapter;

  /**
   * The {@link ViewPager} that will host the section contents.
   */
  ViewPager mViewPager;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    instance = this;
    setContentView(R.layout.activity_devices);

    // Set up the action bar.
    final ActionBar actionBar = getActionBar();
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

    // Create the adapter that will return a fragment for each of the three
    // primary sections of the activity.
    mSectionsPagerAdapter = new SectionsPagerAdapter(getFragmentManager());

    // Set up the ViewPager with the sections adapter.
    mViewPager = (ViewPager) findViewById(R.id.pager);
    mViewPager.setAdapter(mSectionsPagerAdapter);

    // When swiping between different sections, select the corresponding
    // tab. We can also use ActionBar.Tab#select() to do this if we have
    // a reference to the Tab.
    mViewPager
        .setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
          @Override
          public void onPageSelected(int position) {
            actionBar.setSelectedNavigationItem(position);
          }
        });

    // For each of the sections in the app, add a tab to the action bar.
    for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
      // Create a tab with text corresponding to the page title defined by
      // the adapter. Also specify this Activity object, which implements
      // the TabListener interface, as the callback (listener) for when
      // this tab is selected.
      actionBar.addTab(actionBar.newTab()
          .setText(mSectionsPagerAdapter.getPageTitle(i))
          .setTabListener(this));
    }
  }

  @Override
  public void onTabSelected(ActionBar.Tab tab,
      FragmentTransaction fragmentTransaction) {
    // When the given tab is selected, switch to the corresponding page in
    // the ViewPager.
    mViewPager.setCurrentItem(tab.getPosition());
    int section = tab.getPosition()+1;
    switch (section) {
    case SECTION_DETAILS:
      refreshMessagesData();
      break;
    default:
      break;
    }
    
  }

  @Override
  public void onTabUnselected(ActionBar.Tab tab,
      FragmentTransaction fragmentTransaction) {
  }

  @Override
  public void onTabReselected(ActionBar.Tab tab,
      FragmentTransaction fragmentTransaction) {
  }

  /**
   * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
   * one of the sections/tabs/pages.
   */
  public class SectionsPagerAdapter extends FragmentPagerAdapter {

    public SectionsPagerAdapter(FragmentManager fm) {
      super(fm);
    }

    @Override
    public Fragment getItem(int position) {
      // getItem is called to instantiate the fragment for the given page.
      // Return a PlaceholderFragment (defined as a static inner class
      // below).
      return PlaceholderFragment.newInstance(position + 1);
    }

    @Override
    public int getCount() {
      // Show 3 total pages.
      return 1;
    }

    @Override
    public CharSequence getPageTitle(int position) {
      Locale l = Locale.getDefault();
      switch (position) {
      case 0:
        return getString(R.string.messages_section1).toUpperCase(l);
      }
      return null;
    }
  }

  /**
   * A placeholder fragment containing a simple view.
   */
  public static class PlaceholderFragment extends Fragment {
    /**
     * The fragment argument representing the section number for this
     * fragment.
     */
    private static final String ARG_SECTION_NUMBER = "section_number";

    /**
     * Returns a new instance of this fragment for the given section number.
     */
    public static PlaceholderFragment newInstance(int sectionNumber) {
      PlaceholderFragment fragment = new PlaceholderFragment();
      Bundle args = new Bundle();
      args.putInt(ARG_SECTION_NUMBER, sectionNumber);
      fragment.setArguments(args);
      return fragment;
    }

    public PlaceholderFragment() {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
      View rootView;
      int section = getArguments().getInt(
          ARG_SECTION_NUMBER);
      
      if(SECTION_DETAILS == section ){
        rootView = inflater.inflate(R.layout.fragment_messages, container,
            false);
        
        messagesListView = (ListView) rootView
            .findViewById(R.id.listViewMessages);
        
        instance.refreshMessagesData();
        
      } else {
        rootView = inflater.inflate(R.layout.fragment_sami, container,
            false);
        
        TextView textView = (TextView) rootView
            .findViewById(R.id.section_label);
        textView.setText(R.string.messages_section1);
      }
      return rootView;
    }
  }
  
  /**
   * Sets the context of the Sami wrapper
   */
  void initSami(){
    sami = Sami.setInstance(this, new SamiStack(Config.APP_ID, Config.REDIRECT_URI));
  } 
  
  /**
   * Populates the message addapter and passes it to the UI
   */
  void refreshMessagesData(){
    instance.initSami();
    if(messagesListView != null){
      final String uid = sami.getCredentials().getId();
      final String mid = getIntent().getExtras().getString("mid");
      
      new Call(new Code() {
        
        @Override
        public Object run() {
          List<NormalizedMessage> messages = null;
            try {
              NormalizedMessagesEnvelope envelope = sami.getMessagesQueryApi()
                  .getNormalizedMessages( 
                      uid, null, mid, null, null, null, null, null, null, null);
                  
              messages = envelope.getData();
            } catch (ApiException e) {
              e.printStackTrace();
            }
            return messages;
        }
      }, new Callback() {
        
        @Override
        public void onApiResult(Object result) {
          if(result != null){
            List<NormalizedMessage> normalizedMessages = (List<NormalizedMessage>) result;
            GenericAdapter adapter = new GenericAdapter(MessagesActivity.this, generateMessagesData(normalizedMessages));
            messagesListView.setAdapter(adapter);
          } else {
            Toast.makeText(MessagesActivity.this, "API call failed", Toast.LENGTH_SHORT).show();
          }
        }
      }).execute();
      
      
      
    }
  }
  
  /**
   * Addapts the data comming from SAMI android client to a list adapter 
   * This has nothing to do with SAMI, just UI work to display a list view
   * @param normalizedMessages
   * @return
   */
  private ArrayList<Item> generateMessagesData(List<NormalizedMessage> normalizedMessages){
    ArrayList<Item> items = new ArrayList<Item>();
    
    for(NormalizedMessage message : normalizedMessages){
      
      items.add(new Item("MessageID", message.getMid()));
      String ts = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss.SSSZ").format(new Date(message.getTs().longValue()));
      items.add(new Item("Timestamp", ts));
      items.add(new Item("Source Device", message.getSdid()));
      Map<String, ?> data = message.getData();
      Iterator entries = data.entrySet().iterator();
      while (entries.hasNext()) {
        Entry thisEntry = (Entry) entries.next();
        Object key = thisEntry.getKey();
        Object keyValue = thisEntry.getValue();
        items.add(new Item("Data."+key.toString(), keyValue.toString()));
      }
      
      
    }
    return items;
  }
  
  /**
   * These methods are not required in this activity
   */

  @Override
  public void onLoginCompleted(String accessToken) {
  }

  @Override
  public void onLoginCanceled() {
  }

  @Override
  public void onInvalidCredentials() {
  }

}
Java Source Code List
