Programmatically set '?selectableItemBackground' on Android view

Question

In xml, I often do this to emulate onClick effect:

<android.support.v7.widget.CardView
    android:id="@+id/cardView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:foreground="?selectableItemBackground">

    ...

</android.support.v7.widget.CardView>

Is there any way to access ?selectableItemBackground in java?

Amit Vaghela · Accepted Answer · 2017-10-13T13:25:08.267

237

For appcompat you can use,

TypedValue outValue = new TypedValue();
getContext().getTheme().resolveAttribute(android.R.attr.selectableItemBackground, outValue, true);
cardView.setBackgroundResource(outValue.resourceId);

edited Oct 13 '17 at 13:25

answered Jun 23 '16 at 09:42

Amit Vaghela

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I've been searching a lot and I've found a lot of answers, but this certainly is the best one. Thank you so much! – Mattia Ruggiero May 10 '17 at 14:48
not working for me I making an Image View programmatically and setting this resource alongwith clickable and focusable true – Cyph3rCod3r Jan 15 '19 at 15:01
15

This changes background not foreground, so if you already have a custom background for the view it replaces it. I don't know how this can be the right answer – Dantalian Jan 25 '19 at 11:32
2

Comes up as purple. Any way to change the color? – TheRealChx101 Sep 01 '19 at 01:10
1

this is helpful. – Nouman Ch Jul 16 '20 at 05:38
this raised `Resources$NotFoundException` – Zain Feb 19 '21 at 20:36
How to do this in the case of `style="?android:attr/borderlessButtonStyle"` on a Button? – Benur21 Feb 22 '21 at 15:15

score 61 · Answer 2 · edited Apr 23 '19 at 13:48

61

For those who work with Kotlin, here are some extensions functions to add Ripple on Android View type :

private fun View.addRipple() = with(TypedValue()) {
    context.theme.resolveAttribute(android.R.attr.selectableItemBackground, this, true)
    setBackgroundResource(resourceId)
}

private fun View.addCircleRipple() = with(TypedValue()) {
    context.theme.resolveAttribute(android.R.attr.selectableItemBackgroundBorderless, this, true)
    setBackgroundResource(resourceId)
}

edited Apr 23 '19 at 13:48

Luca Murra

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answered Aug 09 '18 at 13:26

Nicolas Duponchel

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1

With android.R.attr... will support the API level >= 21, rather if use R.attr... it'd be backward compatible. – Ali Rezaiyan Mar 11 '20 at 07:56
When I click cardview it disappears! – Qaiser Hussain Dec 30 '20 at 10:58
addCircleRipple() does not support API level < 21, therefore I'd suggest: `if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { view.addCircleRipple() }` – Rondev May 25 '21 at 06:28
1

for `CardView` you have to set the `foreground`, not the `background`. – Wachid Susilo Mar 17 '22 at 15:15

score 26 · Answer 3 · answered Feb 20 '18 at 12:08

I was looking for the same solution. I slightly changed this answer to make it more suitable for the asked question. Call the following code from your constructor.

private void setClickableAnimation(Context context)
{
    TypedValue outValue = new TypedValue();
    context.getTheme().resolveAttribute( 
        android.R.attr.selectableItemBackground, outValue, true);        
    setForeground(getDrawable(context, outValue.resourceId));
}

latsson · Answer 4 · 2023-08-25T08:15:40.970

9

For Kotlin I'm using

binding.yourCoolView.apply {
    background = with(TypedValue()) {
        context.theme.resolveAttribute(
            androidx.appcompat.R.attr.selectableItemBackground, this, true)
        ContextCompat.getDrawable(context, resourceId)
    }
}

edited Aug 25 '23 at 08:15

answered Jun 22 '21 at 12:21

latsson

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Wachid Susilo · Answer 5 · 2022-06-18T17:09:51.683

For people using Kotlin, this is an extended version of @Nicolas answer. If you are using CardView, you need to change the foreground, not the background.

Code

fun View.addBackgroundRipple() = with(TypedValue()) {
    context.theme.resolveAttribute(android.R.attr.selectableItemBackground, this, true)
    setBackgroundResource(resourceId)
}

fun View.addBackgroundCircleRipple() = with(TypedValue()) {
    context.theme.resolveAttribute(android.R.attr.selectableItemBackgroundBorderless, this, true)
    setBackgroundResource(resourceId)
}

fun View.addForegroundRipple() = with(TypedValue()) {
    context.theme.resolveAttribute(android.R.attr.selectableItemBackground, this, true)
    foreground = ContextCompat.getDrawable(context, resourceId)
}

fun View.addForegroundCircleRipple() = with(TypedValue()) {
    context.theme.resolveAttribute(android.R.attr.selectableItemBackgroundBorderless, this, true)
    foreground = ContextCompat.getDrawable(context, resourceId)
}

Usage

// Background ripple
linearLayout.addBackgroundRipple()

// Foreground ripple
cardView.addForegroundRipple()

@Nicolas without an 'H' ;) Thanks for updating the answer anyway — Nicolas Duponchel, Jun 08 '22 at 08:08

score 7 · Answer 6 · answered Jun 23 '16 at 09:43

7

You should reference it as

android.R.attr.selectableItemBackground

answered Jun 23 '16 at 09:43

vanomart

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score 0 · Answer 7 · answered Nov 23 '20 at 16:58

Based on @Wirling answer we can use foreground to set both the color and the ripple effect

Note: Foreground requires android API level 23(M) and above:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {  
    TypedValue outValue = new TypedValue();
    getContext().getTheme().resolveAttribute(android.R.attr.selectableItemBackground, outValue, true);
    view.setForeground(getDrawable(getContext(), outValue.resourceId));
}

score -1 · Answer 8 · answered Jun 23 '16 at 09:40

-1

Try below code.

int[] attrs = new int[]{R.attr.selectableItemBackground};
TypedArray typedArray = context.obtainStyledAttributes(attrs);
int backgroundResource = typedArray.getResourceId(0, 0);
cardView.setBackgroundResource(backgroundResource);
cardView.setClickable(true);
typedArray.recycle();

answered Jun 23 '16 at 09:40

Hardik Trivedi

5,677
5
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1

I'm sorry but this code doesn't make sense to me, what's the point of obtaining `TypedArray` if you're not getting any resource from it? – Hendra Anggrian Jun 23 '16 at 09:47

score -1 · Answer 9 · answered Oct 07 '20 at 04:48

From a fragment:

TypedValue outValue = new TypedValue();
requireContext().getTheme().resolveAttribute(android.R.attr.selectableItemBackground, outValue, true);
cardView.setBackgroundResource(outValue.resourceId);

From an adapter declaring in its constructor the context or the same fragment:

TypedValue outValue = new TypedValue();
fragment.requireContext().getTheme().resolveAttribute(android.R.attr.selectableItemBackground, outValue, true);
holder.cardView.setBackgroundResource(outValue.resourceId);

Programmatically set '?selectableItemBackground' on Android view

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