This demo shows how various action bar display option flags can be combined and their effects.
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package app.test;
import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.Activity;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.view.Gravity;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
/**
* This demo shows how various action bar display option flags can be combined and their effects.
*/
public class Test extends Activity
implements View.OnClickListener, ActionBar.TabListener {
private View mCustomView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViewById(R.id.toggle_home_as_up).setOnClickListener(this);
findViewById(R.id.toggle_show_home).setOnClickListener(this);
findViewById(R.id.toggle_use_logo).setOnClickListener(this);
findViewById(R.id.toggle_show_title).setOnClickListener(this);
findViewById(R.id.toggle_show_custom).setOnClickListener(this);
findViewById(R.id.toggle_navigation).setOnClickListener(this);
findViewById(R.id.cycle_custom_gravity).setOnClickListener(this);
mCustomView = getLayoutInflater().inflate(R.layout.action_bar_display_options_custom, null);
// Configure several action bar elements that will be toggled by display options.
final ActionBar bar = getActionBar();
bar.setCustomView(mCustomView,
new ActionBar.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
bar.addTab(bar.newTab().setText("Tab 1").setTabListener(this));
bar.addTab(bar.newTab().setText("Tab 2").setTabListener(this));
bar.addTab(bar.newTab().setText("Tab 3").setTabListener(this));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.my_menu, menu);
return true;
}
public void onClick(View v) {
final ActionBar bar = getActionBar();
int flags = 0;
switch (v.getId()) {
case R.id.toggle_home_as_up:
flags = ActionBar.DISPLAY_HOME_AS_UP;
break;
case R.id.toggle_show_home:
flags = ActionBar.DISPLAY_SHOW_HOME;
break;
case R.id.toggle_use_logo:
flags = ActionBar.DISPLAY_USE_LOGO;
break;
case R.id.toggle_show_title:
flags = ActionBar.DISPLAY_SHOW_TITLE;
break;
case R.id.toggle_show_custom:
flags = ActionBar.DISPLAY_SHOW_CUSTOM;
break;
case R.id.toggle_navigation:
bar.setNavigationMode(
bar.getNavigationMode() == ActionBar.NAVIGATION_MODE_STANDARD
? ActionBar.NAVIGATION_MODE_TABS
: ActionBar.NAVIGATION_MODE_STANDARD);
return;
case R.id.cycle_custom_gravity:
ActionBar.LayoutParams lp = (ActionBar.LayoutParams) mCustomView.getLayoutParams();
int newGravity = 0;
switch (lp.gravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
case Gravity.LEFT:
newGravity = Gravity.CENTER_HORIZONTAL;
break;
case Gravity.CENTER_HORIZONTAL:
newGravity = Gravity.RIGHT;
break;
case Gravity.RIGHT:
newGravity = Gravity.LEFT;
break;
}
lp.gravity = lp.gravity & ~Gravity.HORIZONTAL_GRAVITY_MASK | newGravity;
bar.setCustomView(mCustomView, lp);
return;
}
int change = bar.getDisplayOptions() ^ flags;
bar.setDisplayOptions(change, flags);
}
public void onTabSelected(Tab tab, FragmentTransaction ft) {
}
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
}
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
}
//main.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2010 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<Button android:id="@+id/toggle_home_as_up"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="toggle_home_as_up" />
<Button android:id="@+id/toggle_show_home"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="toggle_show_home" />
<Button android:id="@+id/toggle_use_logo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="toggle_use_logo" />
<Button android:id="@+id/toggle_show_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="toggle_show_title" />
<Button android:id="@+id/toggle_show_custom"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="toggle_show_custom" />
<Button android:id="@+id/toggle_navigation"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="toggle_navigation" />
<Button android:id="@+id/cycle_custom_gravity"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="cycle_custom_gravity" />
</LinearLayout>
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