Nouvel Travay Nouvel Travay - 3 months ago 11
Android Question

Using App namespace in style

I am going to give an example to demonstrate the greater point.

Imagine my app has a number of FloatingActionButtons. Consequently, I want to create one style and reuse it. So I do the following:

<style name="FabStyle” parent ="Widget.Design.FloatingActionButton">
<item name="android:layout_width">wrap_content</item>
<item name="android:layout_height">wrap_content</item>
<item name="android:layout_margin">16dp</item>
<item name="app:backgroundTint">@color/accent</item>
<item name="app:layout_anchorGravity">end|bottom</item>
</style>


The problem I am having is that the code is not compiling because it is complaining about

Error:(40, 5) No resource found that matches the given name: attr 'app:backgroundTint'.


I tried bringing the namespace in through the
resources
tag but that is not working

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


Any ideas how I might get this to work?

dex dex
Answer
for app: namespace you don't need to specify app:<property name> just <property name is enough

for example

<style name="FabStyle” parent ="Widget.Design.FloatingActionButton">
    <item name="android:layout_width">wrap_content</item>
    <item name="android:layout_height">wrap_content</item>
    <item name="android:layout_margin">16dp</item>
    <item name="backgroundTint">@color/accent</item>
    <item name="layout_anchorGravity">end|bottom</item>
</style>

and for layout_anchorGravity you need to set it XML file where you are defining Floating action button.

Comments