Android programming example to set icon and background of ActionBar. (Assume your activity extends android.support.v7.app.ActionBarActivity, with android.support.v7.app.ActionBar)
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package com.example.androidactionbartitle;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.content.res.Resources;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
public class MainActivity extends ActionBarActivity {
Button btn1, btn2, btn3, btn4, btn5;;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1 = (Button)findViewById(R.id.button1);
btn2 = (Button)findViewById(R.id.button2);
btn3 = (Button)findViewById(R.id.button3);
btn4 = (Button)findViewById(R.id.button4);
btn5 = (Button)findViewById(R.id.button5);
btn1.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
ActionBar actionBar = getSupportActionBar();
Drawable drawable;
Resources resources = getResources();
//deprecated in API level 22
//drawable = resources.getDrawable(R.drawable.ic_launcher);
//API Level 21
drawable = resources.getDrawable(R.drawable.ic_launcher, null);
actionBar.setBackgroundDrawable(drawable);
}});
btn2.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
ActionBar actionBar = getSupportActionBar();
Drawable drawable;
drawable = new ColorDrawable(0xA0500050);
actionBar.setBackgroundDrawable(drawable);
}});
btn3.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
ActionBar actionBar = getSupportActionBar();
actionBar.setBackgroundDrawable(null);
}});
btn4.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
ActionBar actionBar = getSupportActionBar();
Drawable drawable;
Resources resources = getResources();
//deprecated in API level 22
//drawable = resources.getDrawable(R.drawable.ic_launcher);
//API Level 21
drawable = resources.getDrawable(R.drawable.ic_launcher, null);
actionBar.setIcon(drawable);
actionBar.setDisplayShowHomeEnabled(true);
}});
btn5.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
//enable display HOME, but with icon of null
ActionBar actionBar = getSupportActionBar();
actionBar.setIcon(null);
actionBar.setDisplayShowHomeEnabled(true);
}});
}
}
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.androidactionbartitle.MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:autoLink="web"
android:text="http://android-er.blogspot.com/"
android:textStyle="bold" />
<Button
android:id="@+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Button 1 (background - drawable icon)"/>
<Button
android:id="@+id/button2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Button 2 (background - color)"/>
<Button
android:id="@+id/button3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Button 3 (background - null)"/>
<Button
android:id="@+id/button4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Button 4 (set icon)"/>
<Button
android:id="@+id/button5"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Button 5 (set icon null)"/>
</LinearLayout>
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