How to get theme id

attrs.xml

<attr name="themeName" format="string"/>

CheckingTheme.java

		TypedValue outValue = new TypedValue();
		getTheme().resolveAttribute(R.attr.themeName, outValue, true);
		if(outValue.equals(getString(R.string.custom_title_theme))){
			//you have applied this theme else not
		}

//http://stackoverflow.com/questions/7267852/android-how-to-obtain-the-resource-id-of-the-current-theme

styles.xml

<style name="fs.CustomActionbar" parent="@style/fs">
        <item name="android:actionBarStyle">@style/ActionBar.Solid.CustomFsa</item>
        <item name="themeName">@string/custom_title_theme</item>
</style>

<string name="custom_title_theme">customTitleTheme</string>