Android ActionBarSherlock Tab Listener for Fragments

SherlockTabListener.java

package com.example.sherlockfragmentsdemo;

import android.support.v4.app.FragmentTransaction;

import com.actionbarsherlock.app.ActionBar.Tab;
import com.actionbarsherlock.app.ActionBar.TabListener;
import com.actionbarsherlock.app.SherlockFragment;
import com.actionbarsherlock.app.SherlockFragmentActivity;

public class SherlockTabListener<T extends SherlockFragment> implements TabListener {
	private SherlockFragment mFragment;
	private final SherlockFragmentActivity mActivity;
	private final String mTag;
	private final Class<T> mClass;
	private final int mfragmentContainerId;
	private final Bundle mfragmentArgs;
        
        // This version defaults to replacing the entire activity content area
        // new SherlockTabListener<SomeFragment>(this, "first", SomeFragment.class))
	public SherlockTabListener(SherlockFragmentActivity activity, String tag, Class<T> clz) {
		mActivity = activity;
		mTag = tag;
		mClass = clz;
		mfragmentContainerId = android.R.id.content;
		mfragmentArgs = new Bundle();
	}
	
        // This version supports specifying the container to replace with fragment content
        // new SherlockTabListener<SomeFragment>(R.id.flContent, this, "first", SomeFragment.class))
	public SherlockTabListener(int fragmentContainerId, SherlockFragmentActivity activity,
			String tag, Class<T> clz) {
		mActivity = activity;
		mTag = tag;
		mClass = clz;
		mfragmentContainerId = fragmentContainerId;
		mfragmentArgs = new Bundle();
	}
	
	// This version supports specifying the container to replace with fragment content and fragment args
	// new SherlockTabListener<SomeFragment>(R.id.flContent, this, "first", SomeFragment.class, myFragmentArgs))
	public SherlockTabListener(int fragmentContainerId, SherlockFragmentActivity activity,
			String tag, Class<T> clz, Bundle args) {
		mActivity = activity;
		mTag = tag;
		mClass = clz;
		mfragmentContainerId = fragmentContainerId;
		mfragmentArgs = args;
	}

	public void onTabSelected(Tab tab, FragmentTransaction ft) {
		// Check if the fragment is already initialized
		if (mFragment == null) {
			// If not, instantiate and add it to the activity
			mFragment = (SherlockFragment) SherlockFragment
					.instantiate(mActivity, mClass.getName(), mfragmentArgs);
			ft.add(mfragmentContainerId, mFragment, mTag);
		} else {
			// If it exists, simply attach it in order to show it
			ft.attach(mFragment);
		}
	}

	public void onTabUnselected(Tab tab, FragmentTransaction ft) {
		if (mFragment != null) {
			// Detach the fragment, because another one is being attached
			ft.detach(mFragment);
		}
	}

	public void onTabReselected(Tab tab, FragmentTransaction ft) {
		// User selected the already selected tab. Usually do nothing.
	}
}