Helper class for ActionBarActivity

ActionBarFragment.java

package jp.nagakenjs.appcompathelper.app;

import android.app.Activity;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;

public class ActionBarFragment extends Fragment {

    private ActionBarActivity mActivity;

    public ActionBarActivity getActionBarActivity() {
        return mActivity;
    }

    @Override
    public void onAttach(Activity activity) {
        if (!(activity instanceof ActionBarActivity)) {
            throw new IllegalStateException(getClass().getSimpleName()
                    + " must be attached to a ActionBarActivity.");
        }
        mActivity = (ActionBarActivity) activity;

        super.onAttach(activity);
    }

    @Override
    public void onDetach() {
        mActivity = null;
        super.onDetach();
    }

}

ActionBarListFragment.java

package jp.nagakenjs.appcompathelper.app;

import android.app.Activity;
import android.support.v4.app.ListFragment;
import android.support.v7.app.ActionBarActivity;

public class ActionBarListFragment extends ListFragment {
    private ActionBarActivity mActivity;

    public ActionBarActivity getActionBarActivity() {
        return mActivity;
    }

    @Override
    public void onAttach(Activity activity) {
        if (!(activity instanceof ActionBarActivity)) {
            throw new IllegalStateException(getClass().getSimpleName()
                    + " must be attached to a ActionBarActivity.");
        }
        mActivity = (ActionBarActivity) activity;

        super.onAttach(activity);
    }

    @Override
    public void onDetach() {
        mActivity = null;
        super.onDetach();
    }

}

WebViewFragment.java

package jp.nagakenjs.appcompathelper.app;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;

public class WebViewFragment extends ActionBarFragment {
    private WebView mWebView;
    private boolean mIsWebViewAvailable;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        if (mWebView != null) {
            mWebView.destroy();
        }
        mWebView = new WebView(getActivity());
        mIsWebViewAvailable = true;
        return mWebView;
    }

    @Override
    public void onPause() {
        super.onPause();
        mWebView.onPause();
    }

    @Override
    public void onResume() {
        super.onResume();
        mWebView.onResume();
    }

    @Override
    public void onDestroyView() {
        mIsWebViewAvailable = false;
        super.onDestroyView();
    }

    @Override
    public void onDestroy() {
        if (mWebView != null) {
            mWebView.destroy();
            mWebView = null;
        }
        super.onDestroy();
    }

    public WebView getWebView() {
        return mIsWebViewAvailable ? mWebView : null;
    }

}