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"/>