info.martinmarinov.dvbservice.dialogs.ShowOneInstanceFragmentDialog.java Source code

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Here is the source code for info.martinmarinov.dvbservice.dialogs.ShowOneInstanceFragmentDialog.java

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/*
 * This is an Android user space port of DVB-T Linux kernel modules.
 *
 * Copyright (C) 2017 Martin Marinov <martintzvetomirov at gmail com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

package info.martinmarinov.dvbservice.dialogs;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatDialogFragment;

public class ShowOneInstanceFragmentDialog extends AppCompatDialogFragment {
    public void showOneInstanceOnly(FragmentManager fragmentManager, String tag, Bundle args) {
        // ensure only one instance is present and close existing instances
        FragmentTransaction ft = fragmentManager.beginTransaction();
        Fragment prev = fragmentManager.findFragmentByTag(tag);
        if (prev != null)
            ft.remove(prev);
        ft.addToBackStack(null);

        // set arguments and launch
        setArguments(args);
        try {
            show(ft, tag);
        } catch (IllegalStateException e) {
            // If we try to show an exception while driver is dying
            e.printStackTrace();
        }
    }
}