Java tutorial
/* * Copyright (C) 2014 nohana, Inc. * * 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.laevatein.internal.ui; import com.laevatein.R; import com.laevatein.internal.entity.Album; import com.laevatein.internal.entity.ViewResourceSpec; import com.laevatein.internal.misc.ui.FragmentUtils; import com.laevatein.internal.model.DevicePhotoAlbumCollection; import com.laevatein.internal.ui.helper.AlbumListViewHelper; import com.laevatein.ui.PhotoSelectionActivity; import android.app.Activity; import android.database.Cursor; import android.os.Bundle; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; /** * @author KeithYokoma * @since 2014/03/20 * @version 1.0.0 * @hide */ public class AlbumListFragment extends Fragment implements AdapterView.OnItemClickListener, DevicePhotoAlbumCollection.DevicePhotoAlbumCallbacks { private final DevicePhotoAlbumCollection mCollection = new DevicePhotoAlbumCollection(); private OnDirectorySelectListener mListener; @Override public void onAttach(Activity activity) { super.onAttach(activity); try { mListener = (OnDirectorySelectListener) activity; } catch (ClassCastException e) { throw new IllegalStateException("the host activity should implement OnDirectorySelectListener.", e); } } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.l_fragment_list_album, container, false); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); ViewResourceSpec resources = FragmentUtils.getIntentParcelableExtra(this, PhotoSelectionActivity.EXTRA_VIEW_SPEC); AlbumListViewHelper.setUpListView(this, this, resources.getAlbumViewResources()); mCollection.onCreate(getActivity(), this); mCollection.onRestoreInstanceState(savedInstanceState); AlbumListViewHelper.setCheckedState(this, mCollection.getCurrentSelection()); mCollection.loadAlbums(); } @Override public void onSaveInstanceState(Bundle outState) { mCollection.onSaveInstanceState(outState); super.onSaveInstanceState(outState); } @Override public void onDestroyView() { mCollection.onDestroy(); super.onDestroyView(); } @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { AlbumListViewHelper.callOnSelect(mListener, (Cursor) parent.getItemAtPosition(position)); AlbumListViewHelper.setCheckedState(this, position); mCollection.setStateCurrentSelection(position); } @Override public void onLoad(final Cursor cursor) { AlbumListViewHelper.setCursor(this, cursor); AlbumListViewHelper.callOnDefaultSelect(this, mListener, cursor); AlbumListViewHelper.setCheckedState(this, mCollection.getCurrentSelection()); } @Override public void onReset() { AlbumListViewHelper.setCursor(this, null); } public interface OnDirectorySelectListener { public void onSelect(Album album); } }