Android Open Source - bitfynd-wallet-android Preference Activity

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License

The source code is released under:

GNU General Public License

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Java Source Code

/*
 * Copyright 2011-2014 the original author or authors.
 *// w  w w  .j ava 2 s. co  m
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

package de.schildbach.wallet.ui.preference;

import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceFragment;
import android.preference.PreferenceScreen;
import android.support.annotation.NonNull;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.view.MenuItem;
import de.schildbach.wallet.R;

/**
 * @author Andreas Schildbach
 */
public final class PreferenceActivity extends ActionBarActivity
{
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        getFragmentManager().beginTransaction()
                .replace(android.R.id.content, new HeadersFragment())
                .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN)
                .commit();

        ActionBar actionBar = getSupportActionBar();
        actionBar.setDisplayHomeAsUpEnabled(true);
    }

    public static class HeadersFragment extends PreferenceFragment {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.preference_headers);
        }

        @Override
        public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, @NonNull Preference preference) {
            Fragment frag = null;

            try {
                frag = (Fragment) Class.forName(preference.getFragment()).newInstance();
            }
            catch (java.lang.InstantiationException e) { e.printStackTrace(); }
            catch (IllegalAccessException e) { e.printStackTrace(); }
            catch (ClassNotFoundException e) { e.printStackTrace(); }

            getFragmentManager().beginTransaction()
                    .replace(android.R.id.content, frag)
                    .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN)
                    .addToBackStack(null)
                    .commit();

            return false;
        }
    }

  @Override
  public boolean onOptionsItemSelected(final MenuItem item)
  {
    switch (item.getItemId())
    {
      case android.R.id.home:
                onBackPressed();
        return true;
    }

    return super.onOptionsItemSelected(item);
  }

    @Override
    public void onBackPressed() {
        FragmentManager fm = getFragmentManager();
        FragmentTransaction ft = fm.beginTransaction();

        if(fm.getBackStackEntryCount() > 0) {
            fm.popBackStack();
            ft.commit();
        }
        else {
            finish();
        }
    }
}

Java Source Code List