1 /*
2  * Copyright (C) 2011 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.supportv4.app;
18 
19 import android.os.Bundle;
20 import android.util.Log;
21 import android.view.LayoutInflater;
22 import android.view.View;
23 import android.view.View.OnClickListener;
24 import android.view.ViewGroup;
25 import android.widget.ArrayAdapter;
26 import android.widget.Button;
27 import android.widget.ListView;
28 import android.widget.TextView;
29 
30 import androidx.fragment.app.Fragment;
31 import androidx.fragment.app.FragmentActivity;
32 import androidx.fragment.app.FragmentManager;
33 import androidx.fragment.app.FragmentStatePagerAdapter;
34 import androidx.fragment.app.ListFragment;
35 import androidx.viewpager.widget.ViewPager;
36 
37 import com.example.android.supportv4.Cheeses;
38 import com.example.android.supportv4.R;
39 
40 //BEGIN_INCLUDE(complete)
41 public class FragmentStatePagerSupport extends FragmentActivity {
42     static final int NUM_ITEMS = 10;
43 
44     MyAdapter mAdapter;
45 
46     ViewPager mPager;
47 
48     @Override
onCreate(Bundle savedInstanceState)49     protected void onCreate(Bundle savedInstanceState) {
50         super.onCreate(savedInstanceState);
51         setContentView(R.layout.fragment_pager);
52 
53         mAdapter = new MyAdapter(getSupportFragmentManager());
54 
55         mPager = (ViewPager)findViewById(R.id.pager);
56         mPager.setAdapter(mAdapter);
57 
58         // Watch for button clicks.
59         Button button = (Button)findViewById(R.id.goto_first);
60         button.setOnClickListener(new OnClickListener() {
61             @Override
62             public void onClick(View v) {
63                 mPager.setCurrentItem(0);
64             }
65         });
66         button = (Button)findViewById(R.id.goto_last);
67         button.setOnClickListener(new OnClickListener() {
68             @Override
69             public void onClick(View v) {
70                 mPager.setCurrentItem(NUM_ITEMS-1);
71             }
72         });
73     }
74 
75     public static class MyAdapter extends FragmentStatePagerAdapter {
MyAdapter(FragmentManager fm)76         public MyAdapter(FragmentManager fm) {
77             super(fm);
78         }
79 
80         @Override
getCount()81         public int getCount() {
82             return NUM_ITEMS;
83         }
84 
85         @Override
getItem(int position)86         public Fragment getItem(int position) {
87             return ArrayListFragment.newInstance(position);
88         }
89     }
90 
91     public static class ArrayListFragment extends ListFragment {
92         int mNum;
93 
94         /**
95          * Create a new instance of CountingFragment, providing "num"
96          * as an argument.
97          */
newInstance(int num)98         static ArrayListFragment newInstance(int num) {
99             ArrayListFragment f = new ArrayListFragment();
100 
101             // Supply num input as an argument.
102             Bundle args = new Bundle();
103             args.putInt("num", num);
104             f.setArguments(args);
105 
106             return f;
107         }
108 
109         /**
110          * When creating, retrieve this instance's number from its arguments.
111          */
112         @Override
onCreate(Bundle savedInstanceState)113         public void onCreate(Bundle savedInstanceState) {
114             super.onCreate(savedInstanceState);
115             mNum = getArguments() != null ? getArguments().getInt("num") : 1;
116         }
117 
118         /**
119          * The Fragment's UI is just a simple text view showing its
120          * instance number.
121          */
122         @Override
onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)123         public View onCreateView(LayoutInflater inflater, ViewGroup container,
124                 Bundle savedInstanceState) {
125             View v = inflater.inflate(R.layout.fragment_pager_list, container, false);
126             View tv = v.findViewById(R.id.text);
127             ((TextView)tv).setText("Fragment #" + mNum);
128             return v;
129         }
130 
131         @Override
onActivityCreated(Bundle savedInstanceState)132         public void onActivityCreated(Bundle savedInstanceState) {
133             super.onActivityCreated(savedInstanceState);
134             setListAdapter(new ArrayAdapter<String>(getActivity(),
135                     android.R.layout.simple_list_item_1, Cheeses.sCheeseStrings));
136         }
137 
138         @Override
onListItemClick(ListView l, View v, int position, long id)139         public void onListItemClick(ListView l, View v, int position, long id) {
140             Log.i("FragmentList", "Item clicked: " + id);
141         }
142     }
143 }
144 //END_INCLUDE(complete)
145