How to change my action bar text color and font size in android

Question

i am new to android how to change my app name text color and font size ,my default text color was black i want change it to White color and increase my font size please any one help me

style.xml

my default text color was black i want change it to White color

<resources xmlns:android="http://schemas.android.com/apk/res/android">

<!--
    Base application theme, dependent on API level. This theme is replaced
    by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
-->
<style name="AppBaseTheme" parent="android:Theme.Light">        
    <!--
        Theme customizations available in newer API levels can go in
        res/values-vXX/styles.xml, while customizations related to
        backward-compatibility can go here.
    -->
</style>

<!-- Application theme. -->
<style name="AppTheme" parent="AppBaseTheme">
    <item name="android:actionBarStyle">@style/MyActionBarTheme</item>
    <item name="android:actionBarTabTextStyle">@style/ActionBarTabText</item>
    <item name="android:titleTextStyle">@style/MyActionBarTitleText</item>
    <item name="android:actionBarTabStyle">@style/tabStyle</item>
    <item name="android:actionBarDivider">@null</item>
    <!-- All customizations that are NOT specific to a particular API-level can go here. -->
</style>

<style name="MyActionBarTheme" parent="@android:style/Widget.Holo.Light.ActionBar">
    <item name="android:background">#029C7A</item>        
</style>

<style name="ActionBarTabText" parent="@android:style/Widget.Holo.Light.ActionBar">       
    <item name="android:textColor">#CFCFC4</item>
    <item name="android:gravity">center</item>
</style> 

<style name="MyActionBarTitleText" parent="@android:style/TextAppearance.Holo.Widget.ActionBar.Title">
    <item name="android:textColor">#FFFFFF</item>
</style>

<style name="tabStyle" parent="@android:style/Widget.Holo.Light.ActionBar.TabView">
    <item name="android:tabStripEnabled">false</item>    
</style>
</resources>

Answer 1

Using AppCompat Theme, it can be done in this way. Define a custom style in styles.xml as follows:

<style name="CustomToolbarTheme" parent="Theme.AppCompat.NoActionBar">
        <item name="android:textColorPrimary">#FFFFFF</item>
        <item name="actionMenuTextColor">add_colour_your_choice</item>
        <item name="android:textColorSecondary">add_colour_your_choice</item>
        <item name="android:textSize">30sp</item>
    </style>

Then in the layout of the activity where you wish to change the action bar colour add a toolbar:

<android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="@android:color/white"
        android:elevation="0.5dp"
        android:theme="@style/CustomToolbarTheme"/>

And lastly in the java file of the activity, add the following lines to onCreate after setContentLayout:

Toolbar toolbar=(Toolbar)findViewById(R.id.toolbar);
setSupportActionBar(toolbar);

Note: For this to work, you will have to add:

compile 'com.android.support:appcompat-v7:22.2.1'

to your build.gradle(module:app) under dependencies. (There are two dependencies, one under buildscipt and one at the end. ADD the line to the one AT THE END