1/*
2 * Copyright (C) 2016 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
17package com.example.android.support.design.widget;
18
19import com.example.android.support.design.R;
20
21import android.content.Context;
22import android.os.Bundle;
23import android.support.annotation.Nullable;
24import android.support.design.widget.BottomSheetBehavior;
25import android.support.v4.app.Fragment;
26import android.support.v7.app.AppCompatActivity;
27import android.support.v7.widget.LinearLayoutManager;
28import android.support.v7.widget.RecyclerView;
29import android.view.LayoutInflater;
30import android.view.View;
31import android.view.ViewGroup;
32import android.widget.TextView;
33
34/**
35 * This demonstrates basic usage of {@link BottomSheetBehavior} with Fragment.
36 */
37public class BottomSheetWithFragment extends AppCompatActivity {
38
39    private BottomSheetBehavior mBottomSheetBehavior;
40
41    @Override
42    protected void onCreate(@Nullable Bundle savedInstanceState) {
43        super.onCreate(savedInstanceState);
44        setContentView(R.layout.design_bottom_sheet_with_fragment);
45        setUpRecyclerView((RecyclerView) findViewById(R.id.list1));
46        mBottomSheetBehavior = BottomSheetBehavior.from(findViewById(R.id.bottom_sheet));
47    }
48
49    @Override
50    public void onBackPressed() {
51        if (mBottomSheetBehavior.getState() == BottomSheetBehavior.STATE_EXPANDED) {
52            mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
53        } else {
54            super.onBackPressed();
55        }
56    }
57
58    private static void setUpRecyclerView(RecyclerView recyclerView) {
59        Context context = recyclerView.getContext();
60        recyclerView.setLayoutManager(new LinearLayoutManager(context));
61        recyclerView.setAdapter(new DummyAdapter(context, 30));
62    }
63
64    public static class BottomSheetFragment extends Fragment {
65
66        @Nullable
67        @Override
68        public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
69                @Nullable Bundle savedInstanceState) {
70            return inflater.inflate(R.layout.design_bottom_sheet_fragment, container, false);
71        }
72
73        @Override
74        public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
75            setUpRecyclerView((RecyclerView) view.findViewById(R.id.list2));
76        }
77    }
78
79    public static class ViewHolder extends RecyclerView.ViewHolder {
80
81        public TextView text;
82
83        public ViewHolder(LayoutInflater inflater, ViewGroup parent) {
84            super(inflater.inflate(android.R.layout.simple_list_item_1, parent, false));
85            text = (TextView) itemView.findViewById(android.R.id.text1);
86        }
87    }
88
89    public static class DummyAdapter extends RecyclerView.Adapter<ViewHolder> {
90
91        private final Context mContext;
92
93        private final int mItemCount;
94
95        public DummyAdapter(Context context, int itemCount) {
96            mContext = context;
97            mItemCount = itemCount;
98        }
99
100        @Override
101        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
102            return new ViewHolder(LayoutInflater.from(mContext), parent);
103        }
104
105        @Override
106        public void onBindViewHolder(ViewHolder holder, int position) {
107            holder.text.setText(mContext.getString(R.string.item_n, position + 1));
108        }
109
110        @Override
111        public int getItemCount() {
112            return mItemCount;
113        }
114    }
115
116}
117