ToolbarDisplayOptions.java revision 4ff4aa9fc5ea370fdf2f187b1f3100b0626b5755 
1/*
2 * Copyright (C) 2014 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.supportv7.app;
18
19import com.example.android.supportv7.R;
20
21import android.os.Bundle;
22import android.support.v4.app.FragmentTransaction;
23import android.support.v7.app.ActionBar;
24import android.support.v7.app.ActionBar.Tab;
25import android.support.v7.app.ActionBarActivity;
26import android.support.v7.widget.Toolbar;
27import android.view.Gravity;
28import android.view.Menu;
29import android.view.View;
30import android.view.ViewGroup.LayoutParams;
31import android.widget.ArrayAdapter;
32import android.widget.Toast;
33
34/**
35 * This demo shows how various action bar display option flags can be combined and their effects
36 * when used on a Toolbar-provided Action Bar
37 */
38public class ToolbarDisplayOptions extends ActionBarActivity
39        implements View.OnClickListener {
40
41    private View mCustomView;
42    private ActionBar.LayoutParams mCustomViewLayoutParams;
43
44    @Override
45    protected void onCreate(Bundle savedInstanceState) {
46        super.onCreate(savedInstanceState);
47        setContentView(R.layout.toolbar_display_options);
48
49        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
50        setSupportActionBar(toolbar);
51
52        findViewById(R.id.toggle_home_as_up).setOnClickListener(this);
53        findViewById(R.id.toggle_show_home).setOnClickListener(this);
54        findViewById(R.id.toggle_use_logo).setOnClickListener(this);
55        findViewById(R.id.toggle_show_title).setOnClickListener(this);
56        findViewById(R.id.toggle_show_custom).setOnClickListener(this);
57        findViewById(R.id.cycle_custom_gravity).setOnClickListener(this);
58        findViewById(R.id.toggle_visibility).setOnClickListener(this);
59
60        // Configure several action bar elements that will be toggled by display options.
61        mCustomView = getLayoutInflater().inflate(R.layout.action_bar_display_options_custom, null);
62        mCustomViewLayoutParams = new ActionBar.LayoutParams(
63                LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
64    }
65
66    @Override
67    public boolean onCreateOptionsMenu(Menu menu) {
68        getMenuInflater().inflate(R.menu.display_options_actions, menu);
69        return true;
70    }
71
72    @Override
73    public boolean onSupportNavigateUp() {
74        finish();
75        return true;
76    }
77
78    @Override
79    public void onClick(View v) {
80        final ActionBar bar = getSupportActionBar();
81        int flags = 0;
82        switch (v.getId()) {
83            case R.id.toggle_home_as_up:
84                flags = ActionBar.DISPLAY_HOME_AS_UP;
85                break;
86            case R.id.toggle_show_home:
87                flags = ActionBar.DISPLAY_SHOW_HOME;
88                break;
89            case R.id.toggle_use_logo:
90                flags = ActionBar.DISPLAY_USE_LOGO;
91                getSupportActionBar().setLogo(R.drawable.ic_media_play);
92                break;
93            case R.id.toggle_show_title:
94                flags = ActionBar.DISPLAY_SHOW_TITLE;
95                break;
96            case R.id.toggle_show_custom:
97                flags = ActionBar.DISPLAY_SHOW_CUSTOM;
98                break;
99            case R.id.cycle_custom_gravity: {
100                ActionBar.LayoutParams lp = mCustomViewLayoutParams;
101                int newGravity = 0;
102                switch (lp.gravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
103                    case Gravity.LEFT:
104                        newGravity = Gravity.CENTER_HORIZONTAL;
105                        break;
106                    case Gravity.CENTER_HORIZONTAL:
107                        newGravity = Gravity.RIGHT;
108                        break;
109                    case Gravity.RIGHT:
110                        newGravity = Gravity.LEFT;
111                        break;
112                }
113                lp.gravity = lp.gravity & ~Gravity.HORIZONTAL_GRAVITY_MASK | newGravity;
114                bar.setCustomView(mCustomView, lp);
115                return;
116            }
117            case R.id.toggle_visibility:
118                if (bar.isShowing()) {
119                    bar.hide();
120                } else {
121                    bar.show();
122                }
123                return;
124        }
125
126        int change = bar.getDisplayOptions() ^ flags;
127        bar.setDisplayOptions(change, flags);
128    }
129}
130