import com.google.android.apps.dashclock.ui.SimplePagedTabsHelper; //导入依赖的package包/类
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    // Force Holo Light since ?android:actionBarXX would use dark action bar
    Context layoutContext = new ContextThemeWrapper(getActivity(),
            android.R.style.Theme_Holo_Light);

    LayoutInflater layoutInflater = LayoutInflater.from(layoutContext);
    View rootView = layoutInflater.inflate(R.layout.dialog_app_chooser, null);
    final ViewGroup tabWidget = (ViewGroup) rootView.findViewById(android.R.id.tabs);
    final ViewPager pager = (ViewPager) rootView.findViewById(R.id.pager);
    pager.setPageMargin((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 16,
            getResources().getDisplayMetrics()));

    SimplePagedTabsHelper helper = new SimplePagedTabsHelper(layoutContext,
            tabWidget, pager);
    helper.addTab(R.string.title_apps, R.id.apps_list);

    // Set up apps
    mAppsList = (ListView) rootView.findViewById(R.id.apps_list);
    mAppsList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> listView, View view,
                int position, long itemId) {
            Log.i("PackageChooserPreference", "onItemClick(" + position + ")");
            String appPackage = mAppsAdapter.getPackageName(position);
            Checkable checker = (Checkable) view;
            checker.setChecked(!checker.isChecked());
            if (checker.isChecked()) {
                appPackages.add(appPackage);
            } else {
                appPackages.remove(appPackage);
            }
            mPreference.setPackages(appPackages);
        }
    });

    tryBindLists();

    return new AlertDialog.Builder(getActivity())
            .setView(rootView)
            .setPositiveButton(android.R.string.ok, dismissListener)
            .create();
}