1/*
2 * Copyright (C) 2015 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 android.os.Bundle;
20import android.view.View;
21import android.widget.Button;
22import android.widget.TextView;
23
24import androidx.annotation.NonNull;
25import androidx.annotation.Nullable;
26
27import com.example.android.support.design.R;
28import com.google.android.material.bottomsheet.BottomSheetBehavior;
29
30
31/**
32 * This demonstrates basic usage of hideable {@link BottomSheetBehavior}.
33 */
34public class BottomSheetHideable extends BottomSheetUsageBase {
35
36    private TextView mTextSlideOffset;
37
38    private Button mToggle;
39
40    @Override
41    protected int getLayoutId() {
42        return R.layout.design_bottom_sheet_hideable;
43    }
44
45    @Override
46    protected void onCreate(@Nullable Bundle savedInstanceState) {
47        super.onCreate(savedInstanceState);
48        mTextSlideOffset = findViewById(R.id.slide_offset);
49        mToggle = findViewById(R.id.toggle);
50        mToggle.setOnClickListener(mOnClickListener);
51        mBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
52            @Override
53            public void onStateChanged(@NonNull View bottomSheet,
54                    @BottomSheetBehavior.State int newState) {
55                switch (newState) {
56                    case BottomSheetBehavior.STATE_HIDDEN:
57                        mToggle.setText(R.string.bottomsheet_show);
58                        mToggle.setEnabled(true);
59                        break;
60                    case BottomSheetBehavior.STATE_EXPANDED:
61                    case BottomSheetBehavior.STATE_COLLAPSED:
62                        mToggle.setText(R.string.bottomsheet_hide);
63                        mToggle.setEnabled(true);
64                        break;
65                }
66            }
67
68            @Override
69            public void onSlide(@NonNull View bottomSheet, float slideOffset) {
70                mTextSlideOffset.setText(String.valueOf(slideOffset));
71            }
72        });
73    }
74
75    private View.OnClickListener mOnClickListener = new View.OnClickListener() {
76        @Override
77        public void onClick(View v) {
78            if (v.getId() == R.id.toggle && mBehavior != null) {
79                mToggle.setEnabled(false);
80                if (mBehavior.getState() == BottomSheetBehavior.STATE_HIDDEN) {
81                    mBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
82                } else {
83                    mBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
84                }
85            }
86        }
87    };
88
89}
90