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.util.TypedValue;
21import android.view.MenuItem;
22import android.view.View;
23
24import androidx.appcompat.widget.Toolbar;
25import androidx.core.view.GravityCompat;
26import androidx.drawerlayout.widget.DrawerLayout;
27
28import com.example.android.support.design.R;
29import com.google.android.material.navigation.NavigationView;
30
31/**
32 * This demonstrates basic usage of NavigationView
33 */
34public class NavigationViewUsage extends NavigationViewUsageBase {
35
36    private DrawerLayout mDrawerLayout;
37
38    @Override
39    protected void onCreate(Bundle savedInstanceState) {
40        super.onCreate(savedInstanceState);
41
42        mDrawerLayout = findViewById(R.id.drawer_layout);
43
44        // Set the color of status bar
45        TypedValue value = new TypedValue();
46        getTheme().resolveAttribute(R.attr.colorPrimaryDark, value, true);
47        mDrawerLayout.setStatusBarBackgroundColor(value.data);
48
49        // Retrieve the Toolbar from our content view, and set it as the action bar
50        Toolbar toolbar = findViewById(R.id.toolbar);
51        setSupportActionBar(toolbar);
52
53        // Toggle icon
54        toolbar.setNavigationIcon(R.drawable.ic_action_navigation_menu);
55        toolbar.setNavigationOnClickListener(new View.OnClickListener() {
56            @Override
57            public void onClick(View view) {
58                mDrawerLayout.openDrawer(GravityCompat.START);
59            }
60        });
61    }
62
63    @Override
64    protected int getLayout() {
65        return R.layout.design_navigation;
66    }
67
68    @Override
69    public NavigationView.OnNavigationItemSelectedListener getNavigationItemSelectedListener() {
70        return new NavigationView.OnNavigationItemSelectedListener() {
71            @Override
72            public boolean onNavigationItemSelected(MenuItem item) {
73                if (handleNavigationItemSelected(item)) {
74                    mDrawerLayout.closeDrawers();
75                    return true;
76                }
77                return false;
78            }
79        };
80    }
81
82    @Override
83    public void onBackPressed() {
84        if (mDrawerLayout.isDrawerOpen(GravityCompat.START)) {
85            mDrawerLayout.closeDrawer(GravityCompat.START);
86        } else {
87            super.onBackPressed();
88        }
89    }
90
91}
92