CODEWITHSUNDEEP
javaandroidandroid-layoutkotlinwidget
waylonion
waylonion

Reputation: 6976

Android widget ripple background when clicked

How can I get a button on a WIDGET on Android to display the Material ripple when clicked?

<LinearLayout
    android:id="@+id/button_power"
    style="@style/MyStyle">
    <ImageView
        android:id="@+id/image_view_power"
        android:layout_width="@dimen/widget_button_image_size"
        android:layout_height="@dimen/widget_button_image_size"
        android:layout_gravity="center_horizontal"
        android:contentDescription="power"
        android:src="@drawable/baseline_power_settings_new_24"
        android:tint="@color/primary_text" />

    <TextView
        android:id="@+id/text_view_power"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="On"
        android:textColor="@color/primary_text"
        android:textSize="@dimen/widget_button_text_size" />
</LinearLayout>

style.xml

<style name="MyStyle" parent="Base.Widget.AppCompat.Button.Borderless">
    <item name="android:layout_width">@dimen/button_height</item>
    <item name="android:layout_height">@dimen/button_height</item>
    <item name="android:minHeight">0dp</item>
    <item name="android:padding">8dp</item>
    <item name="android:minWidth">0dp</item>
    <item name="android:textAllCaps">false</item>
    <item name="android:drawablePadding">0dp</item>
    <item name="android:background">@color/white_pressed</item>
    <item name="android:clickable">true</item>
    <item name="android:focusable">true</item>
    <item name="android:orientation">vertical</item>
</style>

Above shows how I'm using a linear layout to represent a clickable button for the widget. It also includes the style details.

I tried adding the line

android:background="?attr/selectableItemBackground"

to the LinearLayout but got an error on the widget which stated "Problem loading widget". The problem also occurred if I moved the attribute to the style itself.

It looks like what I want to achieve is possible since the Google Drive widget on Android has this effect. How is this done?

Thank you!

Upvotes: 3

Views: 895

Answers (3)

Omkar T
Omkar T

Reputation: 883

I was using

android:background="?selectableItemBackground"

issue was solved after using,

android:background="?android:attr/selectableItemBackground"

Upvotes: 2

Alektas
Alektas

Reputation: 656

You can make a ripple drawable:

<ripple xmlns:android="http://schemas.android.com/apk/res/android"
    android:color="@color/colorPrimary">
    <item android:id="@android:id/mask">
        <shape android:shape="rectangle">
            <solid android:color="@android:color/white" />
        </shape>
    </item>
</ripple>

Then set this drawable as a background of your layout

Upvotes: 0

Gaurav Kumar
Gaurav Kumar

Reputation: 964

Add these attribute to your LinearLayout

    android:clickable="true"
    android:focusable="true"
    android:foreground="?android:attr/selectableItemBackground"

Note: This will not work below lollipop.

Upvotes: 2

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