Theam,style

Theam

 <!-- Base application theme. -->

    <!--<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">-->

    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">

        <!-- Customize your theme here. -->

        <item name="colorPrimary">@color/colorPrimary</item>

        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>

        <item name="colorAccent">@color/colorAccent</item>

    </style>

Style

<style name="style1">

        <item name="android:textSize">25dp</item>

        <item name="android:textColor">@color/red</item>

    </style>

    <style name="style2" parent="style1">

        <item name="android:background">@color/yellow</item>

    </style>

<TextView

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        style="@style/style1"

        android:text="haah"

        android:id="@+id/tv1"/>

    <TextView

        style="@style/style2"

        android:text="haah"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:id="@+id/tv2"/>