Android Open Source - Twitter-Android Main Activity

From Project

License

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

package info.mahmoudhossam.twitter.Activities;
//  w  w w  .  j a v a  2s .co  m
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.ActionBar.Tab;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuInflater;
import com.actionbarsherlock.view.MenuItem;
import info.mahmoudhossam.twitter.Fragments.HomeTweets;
import info.mahmoudhossam.twitter.Fragments.Mentions;
import info.mahmoudhossam.twitter.Fragments.TweetFragment;
import info.mahmoudhossam.twitter.Fragments.UserTweets;
import info.mahmoudhossam.twitter.R;

public class MainActivity extends SherlockFragmentActivity implements
    ActionBar.TabListener {

  private ActionBar actionbar;
  private Fragment fragment;
  private String fragmentTag;

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

  public void initActionBar() {
    actionbar = getSupportActionBar();
    actionbar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
    actionbar.setDisplayHomeAsUpEnabled(true);
    actionbar.setDisplayShowTitleEnabled(false);
    addTabs();
  }

  public void addTabs() {
    ActionBar.Tab mentions = actionbar.newTab().setText(R.string.mentions)
        .setTabListener(this);
    ActionBar.Tab home = actionbar.newTab().setText(R.string.home)
        .setTabListener(this);
    ActionBar.Tab user = actionbar.newTab().setText(R.string.my_profile)
        .setTabListener(this);
    actionbar.addTab(home);
    actionbar.addTab(mentions);
    actionbar.addTab(user);
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getSupportMenuInflater();
    inflater.inflate(R.menu.actions, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    int itemId = item.getItemId();
    if (itemId == R.id.refresh) {
      TweetFragment fragment = (TweetFragment) getSupportFragmentManager()
          .findFragmentByTag(fragmentTag);
      fragment.refresh();
      return true;
    } else if (itemId == R.id.compose) {
      startActivity(new Intent(this, PostStatus.class));
      return true;
    } else
      return false;
  }

  @Override
  public void onTabSelected(Tab tab, FragmentTransaction ft) {
    if (fragment == null) {
      fragment = Fragment.instantiate(this, HomeTweets.class.getName());
      fragmentTag = "home";
      ft.add(R.id.RelativeLayout, fragment, fragmentTag);
    } else {
      if (tab.getPosition() == 0) {
        fragment = Fragment.instantiate(this,
            HomeTweets.class.getName());
      } else if (tab.getPosition() == 1) {
        fragment = Fragment.instantiate(this, Mentions.class.getName());
        fragmentTag = "mentions";
      } else {
        fragment = Fragment.instantiate(this, UserTweets.class.getName());
        fragmentTag = "user";
      }
      ft.replace(R.id.RelativeLayout, fragment, fragmentTag);

    }
  }

  @Override
  public void onTabUnselected(Tab tab, FragmentTransaction ft) {
    if (fragment != null) {
      ft.detach(fragment);
    }
  }

  @Override
  public void onTabReselected(Tab tab, FragmentTransaction ft) {

  }

}
Java Source Code List
