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