Java tutorial
/* * Copyright 2012 The Android Open Source Project * * 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.euphor.paperpad.activities.main; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.support.v4.view.PagerAdapter; import android.support.v4.view.ViewPager; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.ImageView; import com.euphor.paperpad.R; import com.euphor.paperpad.Beans.Album; import com.euphor.paperpad.Beans.Illustration; import com.euphor.paperpad.Beans.Photo; import java.util.ArrayList; import java.util.Iterator; import io.realm.Realm; /** * Demonstrates a "screen-slide" animation using a {@link ViewPager}. Because {@link ViewPager} * automatically plays such an animation when calling {@link ViewPager#setCurrentItem(int)}, there * isn't any animation-specific code in this sample. * * <p>This sample shows a "next" button that advances the user to the next step in a wizard, * animating the current screen out (to the left) and the next screen in (from the right). The * reverse animation is played when the user presses the "previous" button.</p> * * @see ScreenSlidePageFragment */ public class ScreenSlideActivity extends FragmentActivity { /** * The pager widget, which handles animation and allows swiping horizontally to access previous * and next wizard steps. */ private ViewPager mPager; /** * The pager adapter, which provides the pages to the view pager widget. */ private PagerAdapter mPagerAdapter; public int id_illustration; private int id_album; private Realm realm; private Album album; private ArrayList<Illustration> illustrations; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_screen_slide); getActionBar().hide(); realm = Realm.getInstance(getApplicationContext()); Bundle receive = getIntent().getExtras(); id_album = receive.getInt("id_album"); id_illustration = receive.getInt("id_illustration"); album = realm.where(Album.class).equalTo("id_album", id_album).findFirst(); //appController.getAlbumDao().queryForId(id_album); ImageView close_picture = (ImageView) findViewById(R.id.close_picture); close_picture.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { finish(); } }); illustrations = new ArrayList<Illustration>(); for (Iterator<Photo> iterator = album.getPhotos().iterator(); iterator.hasNext();) { Photo photo = (Photo) iterator.next(); //if (photo.getIllustration().getOriginalHeight()>0) { illustrations.add(photo.getIllustration()); //} } Illustration item2 = null; item2 = realm.where(Illustration.class).equalTo("id_i", id_illustration).findFirst(); //appController.getIllustrationDao().queryForId(id_illustration); makeItemFirst(item2); // Instantiate a ViewPager and a PagerAdapter. mPager = (ViewPager) findViewById(R.id.pager); mPagerAdapter = new ScreenSlidePagerAdapter(getSupportFragmentManager()); mPager.setAdapter(mPagerAdapter); // mIndicator = (LinePageIndicator)findViewById(R.id.indicator); // mIndicator.setViewPager(mPager); mPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() { @Override public void onPageSelected(int position) { // When changing pages, reset the action bar actions since they are dependent // on which page is currently active. An alternative approach is to have each // fragment expose actions itself (rather than the activity exposing actions), // but for simplicity, the activity provides the actions in this sample. invalidateOptionsMenu(); } }); } /** * A simple pager adapter that represents 5 {@link ScreenSlidePageFragment} objects, in * sequence. */ private class ScreenSlidePagerAdapter extends android.support.v4.app.FragmentStatePagerAdapter { public ScreenSlidePagerAdapter(android.support.v4.app.FragmentManager fm) { super(fm); } @Override public android.support.v4.app.Fragment getItem(int position) { return ScreenSlidePageFragment.create(illustrations.get(position), id_album); } @Override public int getCount() { return illustrations.size(); } } public void makeItemFirst(Illustration item2) { if (item2 != null) { for (int i = 0; i < illustrations.size(); i++) { if (item2.getId_i() == illustrations.get(i).getId_i()) { illustrations.remove(i); illustrations.add(0, item2); break; } } } } }