style - android transparent button with ripple




Android, setting background color of button loses ripple effect (4)

A very simple and straight forward way of doing this is to set ?attr/selectableItemBackground to android:foreground attribute of your button. Following xml is perfectly valid and works

<Button
    android:id="@+id/btn"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@android:color/white"
    android:foreground="?attr/selectableItemBackground"/>

After adding color to an android button, it loses its ripple effect that makes the user feel like there is a responsive click. How do I fix this? I've searched through many solutions but I couldn't find a definite one that wasn't ambiguous.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                xmlns:tools="http://schemas.android.com/tools"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                tools:context=".ClockInOutFragment">


    <AnalogClock
        android:id="@+id/clock"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/date_and_time"/>


    <RelativeLayout
        android:id="@+id/date_and_time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="10dp">

        <TextView
            android:id="@+id/time_digits"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="12:10"
            android:textSize="45sp"/>

        <TextView
            android:id="@+id/am_pm"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignBaseline="@+id/time_digits"
            android:layout_toRightOf="@+id/time_digits"
            android:paddingLeft="3dp"
            android:text="PM"
            android:textSize="20sp"/>

        <TextView
            android:id="@+id/date"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/time_digits"
            android:text="Mon, July 11"
            android:textSize="22sp"/>
    </RelativeLayout>

    <!--Clock in and out buttons-->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:orientation="horizontal">

        <Button
            android:id="@+id/textView3"
            android:layout_width="0dp"
            android:layout_height="56dp"
            android:layout_weight="1"
            android:background="#4CAF50"
            android:gravity="center"
            android:text="Clock In"
            android:textAppearance="?android:attr/textAppearanceLarge"
            android:textColor="#FFFFFF"/>

        <!--Divider between the clock in and out button-->
        <View
            android:layout_width="1dp"
            android:layout_height="match_parent"
            android:background="#B6B6B6"/>

        <Button
            android:id="@+id/textView4"
            android:layout_width="0dp"
            android:layout_height="56dp"
            android:layout_weight="1"
            android:background="#FF5252"
            android:gravity="center"
            android:text="Clock Out"
            android:textAppearance="?android:attr/textAppearanceLarge"
            android:textColor="#FFFFFF"/>
    </LinearLayout>


</RelativeLayout>

Actually, you can use <layer-list> of drawables to combine ripple effect with any other drawable. This is a universal solution also for pre-lolipop: I've tested it in many configurations.

The only problem is that pre-lolipop crashes when ?selectableItemBackground appears inside <layer-list>, so we have to create LayerDrawable programmatically.

A very fast simple solution looks like:

Specify for your View

android:background="?selectableItemBackground"

Then anywhere in the code create mySpecialDrawable and do the trick:

Drawable[] layers = {mySpecialDrawable, getBackground()};
setBackgroundDrawable(new LayerDrawable(layers).mutate()); 

Please note that .mutate() for LayeredDrawable is essential here!

A more complex solution could be useful when you already have your custom View and prefer rather extend its functionality and compatibility than add extra empty FrameLayout as a parent.

Inside attrs.xml put:

<resources>
    <declare-styleable name="MyView">
        <attr name="selectableBackground" format="reference"/>
        <attr name="backgroundDrawable" format="reference"/>
    </declare-styleable>
</resources>

then inside your View-descendant class:

private Drawable selectableBackground;
private Drawable backgroundDrawable;

public MyView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);

    try {
        TypedArray attributeArray;
        attributeArray = context.obtainStyledAttributes(attrs, R.styleable.MyView);

        int id = attributeArray.getResourceId(R.styleable.MyView_selectableBackground, -1);
        if (id != -1) {
            selectableBackground = ResourcesCompat.getDrawable(getResources(), id, context.getTheme());
        }
        id = attributeArray.getResourceId(R.styleable.MyView_backgroundDrawable, -1);
        if (id != -1) {
            backgroundDrawable = ResourcesCompat.getDrawable(getResources(), id, context.getTheme());
        }

        constructBackground();
        attributeArray.recycle();
    } catch (Exception e) {
        Log.e(this.toString(), "Attributes initialization error", e);
        throw e;
    }
}

void setSelectableBackground(Drawable drawable) {
    selectableBackground = drawable;
    constructBackground();
}

void setDrawable(Drawable drawable) {
    backgroundDrawable = drawable;
    constructBackground();
}

private void constructBackground() {
    if (selectableBackground != null) {
        if (backgroundDrawable != null) {
            Drawable[] layers = {backgroundDrawable, selectableBackground};
            setBackgroundDrawable(new LayerDrawable(layers).mutate());      // Both, using layers
        } else setBackgroundDrawable(selectableBackground);                 // Selectable only
    } else setBackgroundDrawable(backgroundDrawable);                       // Background only or null
}

I prefer this approach because it has no issues like android:foreground attribute which is 23+ or extra overhead of enclosing clickable views inside FrameLayout.


Just use :

android:backgroundTint="#4CAF50"

Instead of:

android:background="#4CAF50"

Don't forget to change your Button to android.support.v7.widget.AppCompatButton


You can add the ripple effect & background color with an additionnal ripple drawable:

your layout :

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <Button
        android:id="@+id/button_connect"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dip"
        android:fontFamily="sans-serif"
        android:text="Connect"
        android:background="@drawable/ripple"
        android:textColor="#FFFFFF"
        android:textSize="18sp" />

</LinearLayout>

ripple.xml (this is where you can add background color in addition to the ripple effect) :

<?xml version="1.0" encoding="utf-8"?>
<!-- in drawable folder-->
<ripple
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:color="?android:colorControlHighlight">

    <item android:id="@android:id/mask">
        <shape android:shape="rectangle">
            <solid android:color="?android:colorAccent" />
        </shape>
    </item>

    <item>
        <shape android:shape="rectangle">
            <!-- put your background color here-->
            <solid android:color="@color/default_color" />
        </shape>
    </item>

</ripple>






ripple