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package de.danoeh.antennapod.fragment;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import de.danoeh.antennapod.R;
import de.danoeh.antennapod.activity.MainActivity;
public class EpisodesFragment extends Fragment {
public static final String TAG = "EpisodesFragment";
private static final String PREF_LAST_TAB_POSITION = "tab_position";
private static final int POS_NEW_EPISODES = 0;
private static final int POS_ALL_EPISODES = 1;
private static final int POS_FAV_EPISODES = 2;
private static final int TOTAL_COUNT = 3;
private TabLayout tabLayout;
private ViewPager viewPager;
//Mandatory Constructor
public EpisodesFragment() {
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
}
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
setHasOptionsMenu(true);
((MainActivity) getActivity()).getSupportActionBar().setTitle(R.string.episodes_label);
View rootView = inflater.inflate(R.layout.pager_fragment, container, false);
viewPager = rootView.findViewById(R.id.viewpager);
viewPager.setAdapter(new EpisodesPagerAdapter(getChildFragmentManager(), getResources()));
// Give the TabLayout the ViewPager
tabLayout = rootView.findViewById(R.id.sliding_tabs);
tabLayout.setupWithViewPager(viewPager);
return rootView;
}
@Override
public void onPause() {
super.onPause();
// save our tab selection
SharedPreferences prefs = getActivity().getSharedPreferences(TAG, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = prefs.edit();
editor.putInt(PREF_LAST_TAB_POSITION, tabLayout.getSelectedTabPosition());
editor.apply();
}
@Override
public void onStart() {
super.onStart();
// restore our last position
SharedPreferences prefs = getActivity().getSharedPreferences(TAG, Context.MODE_PRIVATE);
int lastPosition = prefs.getInt(PREF_LAST_TAB_POSITION, 0);
viewPager.setCurrentItem(lastPosition);
}
public static class EpisodesPagerAdapter extends FragmentPagerAdapter {
private final Resources resources;
private final AllEpisodesFragment[] fragments = {
new NewEpisodesFragment(),
new AllEpisodesFragment(),
new FavoriteEpisodesFragment()
};
public EpisodesPagerAdapter(FragmentManager fm, Resources resources) {
super(fm);
this.resources = resources;
}
@Override
public Fragment getItem(int position) {
return fragments[position];
}
@Override
public int getCount() {
return TOTAL_COUNT;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case POS_ALL_EPISODES:
return resources.getString(R.string.all_episodes_short_label);
case POS_NEW_EPISODES:
return resources.getString(R.string.new_episodes_label);
case POS_FAV_EPISODES:
return resources.getString(R.string.favorite_episodes_label);
default:
return super.getPageTitle(position);
}
}
@Override
public void setPrimaryItem(ViewGroup container, int position, Object object) {
super.setPrimaryItem(container, position, object);
for (int i = 0; i < TOTAL_COUNT; i++) {
// Invalidating the OptionsMenu is only allowed for the currently active fragment
fragments[i].isMenuInvalidationAllowed = (i == position);
}
}
}
}
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