Я занимаюсь разработкой приложения для Android. В этом приложении есть кнопка для перехода к другому действию, которое содержит список установленных приложений на телефоне. Когда пользователь выбирает приложение, его имя пакета сохраняется, и пользователь возвращается к предыдущему действию. Но как я могу получить имя пакета?

public class LoaderCustomSupport extends SherlockFragmentActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        FragmentManager fm = getSupportFragmentManager();

        // Create the list fragment and add it as our sole content.
        if (fm.findFragmentById(android.R.id.content) == null) {
            AppListFragment list = new AppListFragment();
            fm.beginTransaction().add(android.R.id.content, list).commit();
        }
    }

    /**
     * This class holds the per-item data in our Loader.
     */
    public static class AppEntry {
        public AppEntry(AppListLoader loader, ApplicationInfo info) {
            mLoader = loader;
            mInfo = info;
            mApkFile = new File(info.sourceDir);
        }

        public ApplicationInfo getApplicationInfo() {
            return mInfo;
        }

        public String getLabel() {
            return mLabel;
        }

        public Drawable getIcon() {
            if (mIcon == null) {
                if (mApkFile.exists()) {
                    mIcon = mInfo.loadIcon(mLoader.mPm);
                    return mIcon;
                } else {
                    mMounted = false;
                }
            } else if (!mMounted) {
                // If the app wasn't mounted but is now mounted, reload
                // its icon.
                if (mApkFile.exists()) {
                    mMounted = true;
                    mIcon = mInfo.loadIcon(mLoader.mPm);
                    return mIcon;
                }
            } else {
                return mIcon;
            }

            return mLoader.getContext().getResources().getDrawable(
                android.R.drawable.sym_def_app_icon);
        }

        @Override
        public String toString() {
            return mLabel;
        }

        void loadLabel(Context context) {
            if (mLabel == null || !mMounted) {
                if (!mApkFile.exists()) {
                    mMounted = false;
                    mLabel = mInfo.packageName;
                } else {
                    mMounted = true;
                    CharSequence label = mInfo.loadLabel(context.getPackageManager());
                    mLabel = label != null ? label.toString() : mInfo.packageName;
                }
            }
        }

        private final AppListLoader mLoader;
        private final ApplicationInfo mInfo;
        private final File mApkFile;
        private String mLabel;
        private Drawable mIcon;
        private boolean mMounted;
    }

    /**
     * Perform alphabetical comparison of application entry objects.
     */
    public static final Comparator ALPHA_COMPARATOR = new Comparator() {
        private final Collator sCollator = Collator.getInstance();

        @Override
        public int compare(AppEntry object1, AppEntry object2) {
            return sCollator.compare(object1.getLabel(), object2.getLabel());
        }
    };

    /**
     * Helper for determining if the configuration has changed in an interesting
     * way so we need to rebuild the app list.
     */
    public static class InterestingConfigChanges {
        final Configuration mLastConfiguration = new Configuration();
        int mLastDensity;

        boolean applyNewConfig(Resources res) {
            int configChanges = mLastConfiguration.updateFrom(res.getConfiguration());
            boolean densityChanged = mLastDensity != res.getDisplayMetrics().densityDpi;
            if (densityChanged || (configChanges&(ActivityInfo.CONFIG_LOCALE
                    |ActivityInfoCompat.CONFIG_UI_MODE|ActivityInfo.CONFIG_SCREEN_LAYOUT)) != 0) {
                mLastDensity = res.getDisplayMetrics().densityDpi;
                return true;
            }
            return false;
        }
    }

    /**
     * Helper class to look for interesting changes to the installed apps
     * so that the loader can be updated.
     */
    public static class PackageIntentReceiver extends BroadcastReceiver {
        final AppListLoader mLoader;

        public PackageIntentReceiver(AppListLoader loader) {
            mLoader = loader;
            IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
            filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
            filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
            filter.addDataScheme("package");
            mLoader.getContext().registerReceiver(this, filter);
            // Register for events related to sdcard installation.
            IntentFilter sdFilter = new IntentFilter();
            sdFilter.addAction(IntentCompat.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE);
            sdFilter.addAction(IntentCompat.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE);
            mLoader.getContext().registerReceiver(this, sdFilter);
        }

        @Override
        public void onReceive(Context context, Intent intent) {
            // Tell the loader about the change.
            mLoader.onContentChanged();
        }
    }

    /**
     * A custom Loader that loads all of the installed applications.
     */
    public static class AppListLoader extends AsyncTaskLoader {
        final InterestingConfigChanges mLastConfig = new InterestingConfigChanges();
        final PackageManager mPm;

        List mApps;
        PackageIntentReceiver mPackageObserver;

        public AppListLoader(Context context) {
            super(context);

            // Retrieve the package manager for later use; note we don't
            // use 'context' directly but instead the save global application
            // context returned by getContext().
            mPm = getContext().getPackageManager();
        }

        /**
         * This is where the bulk of our work is done.  This function is
         * called in a background thread and should generate a new set of
         * data to be published by the loader.
         */
        @Override
        public List loadInBackground() {
            // Retrieve all known applications.
            List apps = mPm.getInstalledApplications(
                PackageManager.GET_UNINSTALLED_PACKAGES |
                PackageManager.GET_DISABLED_COMPONENTS);
            if (apps == null) {
                apps = new ArrayList();
            }

            final Context context = getContext();

            // Create corresponding array of entries and load their labels.
            List entries = new ArrayList(apps.size());
            for (int i=0; i