Split action bar provides a separate bar at the bottom of the screen to display all action items when the activity is running on a narrow screen (such as a portrait-oriented handset).
Separating the action items this way ensures that a reasonable amount of space is available to display all your action items on a narrow screen, while leaving room for navigation and title elements at the top.
To enable split action bar when using the support library, you must do two things:
1.Add uiOptions="splitActionBarWhenNarrow" to each <activity> element or to the <application> element. This attribute is understood only by API level 14 and higher (it is ignored by older versions).
2.To support older versions, add a <meta-data> element as a child of each <activity> element
that declares the same value for "android.support.UI_OPTIONS".
Example Program:
ScreenShots:
activity_main.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.ram.splitactionbar.MainActivity"
tools:ignore="MergeRootFrame" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World.........."
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
Under menu folder create main.xml file and insert following code.
main.xml:
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.ram.demo.MainActivity" >
<item
android:id="@+id/item_lock"
android:icon="@drawable/ii1"
android:orderInCategory="100"
android:title="lock"
app:showAsAction="always"/>
<item
android:id="@+id/item_settings"
android:icon="@drawable/ii2"
android:orderInCategory="100"
android:title="settings"
app:showAsAction="always"/>
<item
android:id="@+id/item3_camera"
android:icon="@drawable/ii3"
android:orderInCategory="100"
android:title="camera"
app:showAsAction="always"/>
</menu>
MainActivity.java:
package com.ram.splitactionbar;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
getMenuInflater().inflate(R.menu.main, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case R.id.item_settings:
Toast.makeText(getApplicationContext(), "settings selected",
Toast.LENGTH_LONG).show();
break;
case R.id.item_lock:
Toast.makeText(getApplicationContext(), "lock selected",
Toast.LENGTH_LONG).show();
break;
case R.id.item3_camera:
Toast.makeText(getApplicationContext(), "camera selected",
Toast.LENGTH_LONG).show();
break;
}
return super.onOptionsItemSelected(item);
}
}
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ram.splitactionbar"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.ram.splitactionbar.MainActivity"
android:label="@string/app_name"
android:theme="@style/Theme.AppCompat.Light"
android:uiOptions="splitActionBarWhenNarrow" >
<meta-data
android:name="android.support.UI_OPTIONS"
android:value="splitActionBarWhenNarrow" />
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Separating the action items this way ensures that a reasonable amount of space is available to display all your action items on a narrow screen, while leaving room for navigation and title elements at the top.
To enable split action bar when using the support library, you must do two things:
1.Add uiOptions="splitActionBarWhenNarrow" to each <activity> element or to the <application> element. This attribute is understood only by API level 14 and higher (it is ignored by older versions).
2.To support older versions, add a <meta-data> element as a child of each <activity> element
that declares the same value for "android.support.UI_OPTIONS".
Example Program:
ScreenShots:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.ram.splitactionbar.MainActivity"
tools:ignore="MergeRootFrame" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World.........."
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
Under menu folder create main.xml file and insert following code.
main.xml:
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.ram.demo.MainActivity" >
<item
android:id="@+id/item_lock"
android:icon="@drawable/ii1"
android:orderInCategory="100"
android:title="lock"
app:showAsAction="always"/>
<item
android:id="@+id/item_settings"
android:icon="@drawable/ii2"
android:orderInCategory="100"
android:title="settings"
app:showAsAction="always"/>
<item
android:id="@+id/item3_camera"
android:icon="@drawable/ii3"
android:orderInCategory="100"
android:title="camera"
app:showAsAction="always"/>
</menu>
MainActivity.java:
package com.ram.splitactionbar;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
getMenuInflater().inflate(R.menu.main, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case R.id.item_settings:
Toast.makeText(getApplicationContext(), "settings selected",
Toast.LENGTH_LONG).show();
break;
case R.id.item_lock:
Toast.makeText(getApplicationContext(), "lock selected",
Toast.LENGTH_LONG).show();
break;
case R.id.item3_camera:
Toast.makeText(getApplicationContext(), "camera selected",
Toast.LENGTH_LONG).show();
break;
}
return super.onOptionsItemSelected(item);
}
}
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ram.splitactionbar"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.ram.splitactionbar.MainActivity"
android:label="@string/app_name"
android:theme="@style/Theme.AppCompat.Light"
android:uiOptions="splitActionBarWhenNarrow" >
<meta-data
android:name="android.support.UI_OPTIONS"
android:value="splitActionBarWhenNarrow" />
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
