com.yohpapa.overlaymusicplayer.activity.MainActivity.java Source code

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Here is the source code for com.yohpapa.overlaymusicplayer.activity.MainActivity.java

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/**
 * Copyright 2014 Kensuke Nakai<kemumaki.kemuo@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.yohpapa.overlaymusicplayer.activity;

import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v13.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.Log;

import com.yohpapa.overlaymusicplayer.R;
import com.yohpapa.overlaymusicplayer.fragment.AlbumListFragment;
import com.yohpapa.overlaymusicplayer.fragment.ArtistListFragment;
import com.yohpapa.overlaymusicplayer.fragment.CommonListFragment;
import com.yohpapa.overlaymusicplayer.fragment.GenreListFragment;
import com.yohpapa.overlaymusicplayer.fragment.PlayListFragment;
import com.yohpapa.overlaymusicplayer.fragment.SettingsFragment;
import com.yohpapa.overlaymusicplayer.fragment.SongListFragment;
import com.yohpapa.tools.PrefUtils;

public class MainActivity extends Activity {
    private static final String TAG = MainActivity.class.getSimpleName();

    private Fragment[] fragments = new Fragment[] { GenreListFragment.getInstance(),
            ArtistListFragment.getInstance(), AlbumListFragment.getInstance(), PlayListFragment.getInstance(),
            SongListFragment.getInstance(), SettingsFragment.getInstance(), };
    private final int[] fragmentNames = { R.string.tab_genres, R.string.tab_artists, R.string.tab_albums,
            R.string.tab_playlists, R.string.tab_songs, R.string.tab_settings, };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        setupViewPager();
        setupActionBar();
    }

    private void setupViewPager() {
        ViewPager pager = (ViewPager) findViewById(R.id.fragment_pager);
        pager.setAdapter(new TabPagerAdapter(getFragmentManager()));
        pager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageSelected(int position) {
                ActionBar bar = getActionBar();
                bar.setSelectedNavigationItem(position);
            }

            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
                Log.d(TAG, String.format("onPageScrolled(%d, %f, %d)", position, positionOffset,
                        positionOffsetPixels));
            }

            @Override
            public void onPageScrollStateChanged(int state) {
                Log.d(TAG, String.format("onPageScrollStateChanged(%d)", state));
            }
        });
    }

    private void setupActionBar() {
        ActionBar bar = getActionBar();
        bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        bar.setDisplayShowHomeEnabled(false);
        bar.setDisplayOptions(0, ActionBar.DISPLAY_SHOW_TITLE);

        int lastPosition = PrefUtils.getInt(this, R.string.pref_last_tab_position, 0);

        for (int i = 0; i < fragmentNames.length; i++) {

            ActionBar.Tab tab = bar.newTab();
            tab.setText(fragmentNames[i]);
            tab.setTabListener(new ActionBar.TabListener() {
                @Override
                public void onTabUnselected(Tab tab, FragmentTransaction ft) {
                    Log.d(TAG, "onTabUnselected");
                }

                @Override
                public void onTabSelected(Tab tab, FragmentTransaction ft) {
                    ViewPager pager = (ViewPager) findViewById(R.id.fragment_pager);
                    pager.setCurrentItem(tab.getPosition());
                    PrefUtils.setInt(MainActivity.this, R.string.pref_last_tab_position, tab.getPosition());
                }

                @Override
                public void onTabReselected(Tab tab, FragmentTransaction ft) {
                    Fragment fragment = fragments[tab.getPosition()];
                    if (fragment instanceof CommonListFragment) {
                        ((CommonListFragment) fragment).onTapWhenSelected();
                    }
                }
            });
            boolean isSelected = false;
            if (i == lastPosition) {
                isSelected = true;
            }
            bar.addTab(tab, isSelected);
        }
    }

    private class TabPagerAdapter extends FragmentPagerAdapter {

        public TabPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {
            return fragments[position];
        }

        @Override
        public int getCount() {
            return fragments.length;
        }
    }
}