1 /* 2 * Copyright (C) 2010 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 package com.example.android.apis.app; 17 18 import com.example.android.apis.R; 19 20 import android.app.ActionBar; 21 import android.app.ActionBar.Tab; 22 import android.app.Activity; 23 import android.app.FragmentTransaction; 24 import android.os.Bundle; 25 import android.view.Gravity; 26 import android.view.Menu; 27 import android.view.View; 28 import android.view.ViewGroup.LayoutParams; 29 30 /** 31 * This demo shows how various action bar display option flags can be combined and their effects. 32 */ 33 public class ActionBarDisplayOptions extends Activity 34 implements View.OnClickListener, ActionBar.TabListener { 35 private View mCustomView; 36 37 @Override onCreate(Bundle savedInstanceState)38 protected void onCreate(Bundle savedInstanceState) { 39 super.onCreate(savedInstanceState); 40 setContentView(R.layout.action_bar_display_options); 41 42 findViewById(R.id.toggle_home_as_up).setOnClickListener(this); 43 findViewById(R.id.toggle_show_home).setOnClickListener(this); 44 findViewById(R.id.toggle_use_logo).setOnClickListener(this); 45 findViewById(R.id.toggle_show_title).setOnClickListener(this); 46 findViewById(R.id.toggle_show_custom).setOnClickListener(this); 47 findViewById(R.id.toggle_navigation).setOnClickListener(this); 48 findViewById(R.id.cycle_custom_gravity).setOnClickListener(this); 49 50 mCustomView = getLayoutInflater().inflate(R.layout.action_bar_display_options_custom, null); 51 // Configure several action bar elements that will be toggled by display options. 52 final ActionBar bar = getActionBar(); 53 bar.setCustomView(mCustomView, 54 new ActionBar.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)); 55 56 bar.addTab(bar.newTab().setText("Tab 1").setTabListener(this)); 57 bar.addTab(bar.newTab().setText("Tab 2").setTabListener(this)); 58 bar.addTab(bar.newTab().setText("Tab 3").setTabListener(this)); 59 } 60 61 @Override onCreateOptionsMenu(Menu menu)62 public boolean onCreateOptionsMenu(Menu menu) { 63 getMenuInflater().inflate(R.menu.display_options_actions, menu); 64 return true; 65 } 66 onClick(View v)67 public void onClick(View v) { 68 final ActionBar bar = getActionBar(); 69 int flags = 0; 70 switch (v.getId()) { 71 case R.id.toggle_home_as_up: 72 flags = ActionBar.DISPLAY_HOME_AS_UP; 73 break; 74 case R.id.toggle_show_home: 75 flags = ActionBar.DISPLAY_SHOW_HOME; 76 break; 77 case R.id.toggle_use_logo: 78 flags = ActionBar.DISPLAY_USE_LOGO; 79 break; 80 case R.id.toggle_show_title: 81 flags = ActionBar.DISPLAY_SHOW_TITLE; 82 break; 83 case R.id.toggle_show_custom: 84 flags = ActionBar.DISPLAY_SHOW_CUSTOM; 85 break; 86 87 case R.id.toggle_navigation: 88 bar.setNavigationMode( 89 bar.getNavigationMode() == ActionBar.NAVIGATION_MODE_STANDARD 90 ? ActionBar.NAVIGATION_MODE_TABS 91 : ActionBar.NAVIGATION_MODE_STANDARD); 92 return; 93 case R.id.cycle_custom_gravity: 94 ActionBar.LayoutParams lp = (ActionBar.LayoutParams) mCustomView.getLayoutParams(); 95 int newGravity = 0; 96 switch (lp.gravity & Gravity.HORIZONTAL_GRAVITY_MASK) { 97 case Gravity.LEFT: 98 newGravity = Gravity.CENTER_HORIZONTAL; 99 break; 100 case Gravity.CENTER_HORIZONTAL: 101 newGravity = Gravity.RIGHT; 102 break; 103 case Gravity.RIGHT: 104 newGravity = Gravity.LEFT; 105 break; 106 } 107 lp.gravity = lp.gravity & ~Gravity.HORIZONTAL_GRAVITY_MASK | newGravity; 108 bar.setCustomView(mCustomView, lp); 109 return; 110 } 111 112 int change = bar.getDisplayOptions() ^ flags; 113 bar.setDisplayOptions(change, flags); 114 } 115 onTabSelected(Tab tab, FragmentTransaction ft)116 public void onTabSelected(Tab tab, FragmentTransaction ft) { 117 } 118 onTabUnselected(Tab tab, FragmentTransaction ft)119 public void onTabUnselected(Tab tab, FragmentTransaction ft) { 120 } 121 onTabReselected(Tab tab, FragmentTransaction ft)122 public void onTabReselected(Tab tab, FragmentTransaction ft) { 123 } 124 } 125