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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="match_parent">
<fragment android:name="com.myproject.activities.SomeFragment"
                      android:layout_width="match_parent"
                      android:layout_height="match_parent"
                      android:id="@+id/some_fragment"/>
</LinearLayout>

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private void configureActionBarTabs() {
        final ActionBar actionBar = getActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        actionBar.addTab(actionBar.newTab()
                .setIcon(R.drawable.puppies)
                .setTabListener(new TabListener<PuppyFragment>(this, "PUPPIES", PuppyFragment.class)));
        actionBar.addTab(actionBar.newTab()
                .setIcon(R.drawable.rainbows)
                .setTabListener(new TabListener<RainbowsFragment>(this, "RAINBOWS", RainbowsFragment.class)));
        actionBar.addTab(actionBar.newTab()

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<LinearLayout android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:id="@+id/some_fragment_container"/>

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@InjectFragment(id.some_fragment)
private SomeFragment someFragment;

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public class SomeActivity extends FragmentActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);        
     SomeFragment someFragment = (SomeFragment)findViewById(id.some_fragment);
}
}

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SomeFragment someFragment = new SomeFragment();

FragmentManager supportFragmentManager = context.getFragmentManager();
FragmentTransaction fragmentTransaction = supportFragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.some_fragment_container, someFragment, "SOME_FRAGMENT_TAG");
fragmentTransaction.addToBackStack("SOME_FRAGMENT_TAG");
fragmentTransaction.commit();

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public class SendMessageTask extends SafeAsyncTask<Boolean> {
    private final HttpClient httpClient;
    private final sendMessageCallbacks sendMessageCallbacks;

    @Inject
    public SendMessageTask(org.apache.http.client.HttpClient httpClient,
                          @Assisted SendMessageCallbacks sendMessageCallbacks {
        this.httpClient = httpClient;
        this.sendMessageCallbacks = sendMessageCallbacks;
    }

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public class SendMessageTask extends SafeAsyncTask<Boolean> {
    private final EventBus eventBus;

    @Inject
    public EndSessionTask(EventBus eventBus) {
        this.eventBus = eventBus;
    }

    @Override
    public Boolean call() throws Exception {

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import com.google.common.eventbus.Subscribe;

public class MessagingActivity extends Activity {

    //activity setup methods

    public void sendMessage(){
        new SendMessageTask(httpClient, this).execute();
    }

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public class MessagingActivity implements SendMessageCallbacks extends Activity {

    //activity setup methods

    public void sendMessage(){
        new SendMessageTask(httpClient, this).execute();
    }

    @Override
    protected void onMessageSendingFailed(String reason) {