Home | History | Annotate | Download | only in leanback 
      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
      5  * in compliance with the License. You may obtain a copy of the License at
      6  *
      7  * http://www.apache.org/licenses/LICENSE-2.0
      8  *
      9  * Unless required by applicable law or agreed to in writing, software distributed under the License
     10  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
     11  * or implied. See the License for the specific language governing permissions and limitations under
     12  * the License.
     13  */
     14 package com.example.android.leanback;
     15 
     16 import android.animation.Animator;
     17 import android.animation.AnimatorListenerAdapter;
     18 import android.animation.AnimatorSet;
     19 import android.animation.ObjectAnimator;
     20 import android.graphics.drawable.AnimationDrawable;
     21 import android.support.v17.leanback.app.OnboardingFragment;
     22 import android.view.LayoutInflater;
     23 import android.view.View;
     24 import android.view.ViewGroup;
     25 import android.widget.ImageView;
     26 
     27 import java.util.ArrayList;
     28 
     29 public class OnboardingDemoFragment extends OnboardingFragment {
     30     private static final long ANIMATION_DURATION = 1000;
     31 
     32     private static final int[] CONTENT_BACKGROUNDS = {
     33             R.drawable.tv_bg,
     34             R.drawable.gallery_photo_6,
     35             R.drawable.gallery_photo_8
     36     };
     37 
     38     private static final int[] CONTENT_ANIMATIONS = {
     39             R.drawable.tv_content,
     40             android.R.drawable.stat_sys_download,
     41             android.R.drawable.ic_popup_sync
     42     };
     43 
     44     private String[] mTitles;
     45     private String[] mDescriptions;
     46 
     47     private View mBackgroundView;
     48     private View mContentView;
     49     private ImageView mContentBackgroundView;
     50     private ImageView mContentAnimationView;
     51 
     52     private Animator mContentAnimator;
     53 
     54     @SuppressWarnings("deprecation")
     55     @Override
     56     public void onAttach(android.app.Activity activity) {
     57         super.onAttach(activity);
     58         mTitles = getResources().getStringArray(R.array.onboarding_page_titles);
     59         mDescriptions = getResources().getStringArray(R.array.onboarding_page_descriptions);
     60         setLogoResourceId(R.drawable.ic_launcher);
     61     }
     62 
     63     @Override
     64     protected int getPageCount() {
     65         return mTitles.length;
     66     }
     67 
     68     @Override
     69     protected CharSequence getPageTitle(int i) {
     70         return mTitles[i];
     71     }
     72 
     73     @Override
     74     protected CharSequence getPageDescription(int i) {
     75         return mDescriptions[i];
     76     }
     77 
     78     @Override
     79     protected View onCreateBackgroundView(LayoutInflater layoutInflater, ViewGroup viewGroup) {
     80         mBackgroundView = layoutInflater.inflate(R.layout.onboarding_image, viewGroup, false);
     81         return mBackgroundView;
     82     }
     83 
     84     @Override
     85     protected View onCreateContentView(LayoutInflater layoutInflater, ViewGroup viewGroup) {
     86         mContentView = layoutInflater.inflate(R.layout.onboarding_content, viewGroup, false);
     87         mContentBackgroundView = (ImageView) mContentView.findViewById(R.id.background_image);
     88         mContentAnimationView = (ImageView) mContentView.findViewById(R.id.animation_image);
     89         return mContentView;
     90     }
     91 
     92     @Override
     93     protected View onCreateForegroundView(LayoutInflater layoutInflater, ViewGroup viewGroup) {
     94         return null;
     95     }
     96 
     97     @Override
     98     protected Animator onCreateEnterAnimation() {
     99         ArrayList<Animator> animators = new ArrayList<>();
    100         animators.add(createFadeInAnimator(mBackgroundView));
    101         mContentBackgroundView.setImageResource(CONTENT_BACKGROUNDS[0]);
    102         mContentAnimationView.setImageResource(CONTENT_ANIMATIONS[0]);
    103         mContentAnimator = createFadeInAnimator(mContentView);
    104         animators.add(mContentAnimator);
    105         AnimatorSet set = new AnimatorSet();
    106         set.playTogether(animators);
    107         set.addListener(new AnimatorListenerAdapter() {
    108             @Override
    109             public void onAnimationEnd(Animator animation) {
    110                 ((AnimationDrawable) mContentAnimationView.getDrawable()).start();
    111             }
    112         });
    113         return set;
    114     }
    115 
    116     @Override
    117     protected void onPageChanged(final int newPage, int previousPage) {
    118         if (mContentAnimator != null) {
    119             mContentAnimator.cancel();
    120         }
    121         ((AnimationDrawable) mContentAnimationView.getDrawable()).stop();
    122         ArrayList<Animator> animators = new ArrayList<>();
    123         Animator fadeOut = createFadeOutAnimator(mContentView);
    124         fadeOut.addListener(new AnimatorListenerAdapter() {
    125             @Override
    126             public void onAnimationEnd(Animator animation) {
    127                 mContentBackgroundView.setImageResource(CONTENT_BACKGROUNDS[newPage]);
    128                 mContentAnimationView.setImageResource(CONTENT_ANIMATIONS[newPage]);
    129             }
    130         });
    131         Animator fadeIn = createFadeInAnimator(mContentView);
    132         fadeIn.addListener(new AnimatorListenerAdapter() {
    133             @Override
    134             public void onAnimationEnd(Animator animation) {
    135                 ((AnimationDrawable) mContentAnimationView.getDrawable()).start();
    136             }
    137         });
    138         AnimatorSet set = new AnimatorSet();
    139         set.playSequentially(fadeOut, fadeIn);
    140         set.start();
    141         mContentAnimator = set;
    142     }
    143 
    144     private Animator createFadeInAnimator(View view) {
    145         return ObjectAnimator.ofFloat(view, View.ALPHA, 0.0f, 1.0f).setDuration(ANIMATION_DURATION);
    146     }
    147 
    148     private Animator createFadeOutAnimator(View view) {
    149         return ObjectAnimator.ofFloat(view, View.ALPHA, 1.0f, 0.0f).setDuration(ANIMATION_DURATION);
    150     }
    151 
    152     @Override
    153     protected void onFinishFragment() {
    154         getActivity().finish();
    155     }
    156 }
    157