How to put a CardView attribute in a style?
AndroidAndroid CardviewAndroid Problem Overview
I have:
in a file build.gradle
(dependencies)
dependencies {
compile 'com.android.support:cardview-v7:21.0.+'
}
in a file styles.xml
(styles definition)
<resources
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto">
<style name="CardViewStyle">
<item name="android:layout_margin">5dip</item>
<item name="card_view:cardCornerRadius">4dp</item>
<item name="card_view:cardElevation">4dp</item>
</style>
</resources>
But compiler complains:
Error: No resource found that matches the given name: attr 'card_view:cardCornerRadius'.
How do I add some cardView attributes in a style?
Android Solutions
Solution 1 - Android
Set parent
attribute to CardView
.
You don't even have to add xmlns:card_view="http://schemas.android.com/apk/res-auto"
.
Working snippet of code:
<style name="CardViewStyle" parent="CardView">
<item name="cardCornerRadius">4dp</item>
<item name="cardElevation">4dp</item>
</style>
Solution 2 - Android
To add to mklimek's answer, you do not even need to add the parent="CardView"
Just avoid the cardView: prefix
So instead of
<item name="cardView:cardElevation">5dp</item>
just use
<item name="cardElevation">5dp</item>
So my complete style code for this is:
<style name="categoriesCardViewButtons">
<item name="android:layout_width">80dp</item>
<item name="android:layout_height">wrap_content</item>
<item name="android:layout_marginLeft">10dp</item>
<item name="cardCornerRadius">8dp</item>
<item name="cardElevation">5dp</item>
<item name="cardBackgroundColor">@color/grey_ultra_light</item>
<item name="android:paddingBottom">@dimen/l1LayoutPaddingB</item>
</style>
Solution 3 - Android
This error can occur if you do not have CardView in your gradle dependencies (in Android Studio) for the module containing your style (even though you have the dependency in the module where you use the card view). In that case, simply add
compile 'com.android.support:cardview-v7:22.2.1'
(or another version) to build.gradle
for the module containing themes.xml or styles.xml.
Then, you do not need to set a parent on your style, nor do you need a namespace prefix, but can follow the example in tsik's answer, so all you need is
<style name="myStyle">
<item name="cardCornerRadius">8dp</item>
</style>
Solution 4 - Android
This code work well
<style name="MyCardView" parent="CardView">
<item name="cardUseCompatPadding">true</item>
<item name="cardCornerRadius">@dimen/hei_standard_8dp</item>
<item name="cardBackgroundColor">@color/bg_item_list_alphabet</item>
</style>
Note: parent ="CardView"