1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.example.android.wearable.flashlight;
18 
19 import android.app.Activity;
20 import android.app.Fragment;
21 import android.app.FragmentManager;
22 import android.os.Bundle;
23 import android.support.v13.app.FragmentPagerAdapter;
24 import android.support.v4.view.ViewPager;
25 import android.support.v4.view.ViewPager.OnPageChangeListener;
26 import android.view.LayoutInflater;
27 import android.view.View;
28 import android.view.ViewGroup;
29 
30 import java.util.ArrayList;
31 
32 /**
33  * Let there be light.
34  */
35 public class MainActivity extends Activity {
36 
37     private ViewPager mViewPager;
38 
39     @Override
onCreate(Bundle savedInstanceState)40     protected void onCreate(Bundle savedInstanceState) {
41         super.onCreate(savedInstanceState);
42 
43         setContentView(R.layout.main);
44         mViewPager = (ViewPager) findViewById(R.id.pager);
45         final LightFragmentAdapter adapter = new LightFragmentAdapter(getFragmentManager());
46         adapter.addFragment(new WhiteLightFragment());
47         final PartyLightFragment partyFragment = new PartyLightFragment();
48         adapter.addFragment(partyFragment);
49         mViewPager.setAdapter(adapter);
50         mViewPager.setOnPageChangeListener(new OnPageChangeListener() {
51 
52             @Override
53             public void onPageSelected(int position) {
54                 if (position == 1) {
55                     partyFragment.startCycling();
56                 } else {
57                     partyFragment.stopCycling();
58                 }
59             }
60 
61             @Override
62             public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
63             }
64 
65             @Override
66             public void onPageScrollStateChanged(int state) {
67             }
68         });
69     }
70 
71     static class LightFragmentAdapter extends FragmentPagerAdapter {
72         private ArrayList<Fragment> mFragments;
73 
LightFragmentAdapter(FragmentManager fm)74         public LightFragmentAdapter(FragmentManager fm) {
75             super(fm);
76             mFragments = new ArrayList<Fragment>();
77         }
78 
79         @Override
getItem(int position)80         public Fragment getItem(int position) {
81             return mFragments.get(position);
82         }
83 
84         @Override
getCount()85         public int getCount() {
86             return mFragments.size();
87         }
88 
addFragment(Fragment fragment)89         public void addFragment(Fragment fragment) {
90             mFragments.add(fragment);
91             // Update the pager when adding a fragment.
92             notifyDataSetChanged();
93         }
94     }
95 
96     public static class WhiteLightFragment extends Fragment {
97 
98         @Override
onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)99         public View onCreateView(LayoutInflater inflater, ViewGroup container,
100                 Bundle savedInstanceState) {
101             return inflater.inflate(R.layout.white_light, container, false);
102         }
103     }
104 
105     public static class PartyLightFragment extends Fragment {
106 
107         private PartyLightView mView;
108 
109         @Override
onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)110         public View onCreateView(LayoutInflater inflater, ViewGroup container,
111                 Bundle savedInstanceState) {
112             mView = (PartyLightView) inflater.inflate(R.layout.party_light, container, false);
113             return mView;
114         }
115 
startCycling()116         public void startCycling() {
117             mView.startCycling();
118         }
119 
stopCycling()120         public void stopCycling() {
121             mView.stopCycling();
122         }
123 
124     }
125 }
126