Logo Questions Linux Laravel Mysql Ubuntu Git Menu
 

Listview selector with colored background and ripple effect

I've managed to get individually colored list items while maintaining the ripple effect. Set the background of your list items using whatever adapter you have and set the listview to show the selector on top:

<ListView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:drawSelectorOnTop="true" />

This will draw the ripple effect above the background.


As far as I can tell this bug is only in Android 5.0, not 5.1. The trick seems to be to use Drawable#setHotspot as a Google dev hints to here https://twitter.com/crafty/status/561768446149410816 (because obscure twitter hints are a great form of documentation!)

Assume you have a row layout something like this

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

      <LinearLayout
            android:id="@+id/row_content"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:background="?attr/selectableItemBackground">

          .... content here .....

     </LinearLayout>

</FrameLayout>

The following worked for me

            row.setOnTouchListener(new View.OnTouchListener() {
                @Override
                public boolean onTouch(View v, MotionEvent event) {
                    v.findViewById(R.id.row_content)
                        .getBackground()
                        .setHotspot(event.getX(), event.getY());

                    return(false);
                }
            });

I've found that it only seems to work correctly if you apply the background to the root element of the list item.

Also, consider using the new RecyclerView instead of a ListView

List item view example:

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="@dimen/list_padding"
    android:layout_marginLeft="@dimen/list_padding"
    android:layout_marginRight="@dimen/list_padding"
    android:padding="@dimen/list_padding"
    android:background="@drawable/ripple_bg">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Large Text"
        android:id="@+id/tvTitle"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Small Text"
        android:id="@+id/tvSubtitle" />

</RelativeLayout>

i adapted @ArhatBaid 's answer a littlebit, tested it and it works perfectly:

<ripple xmlns:android="http://schemas.android.com/apk/res/android"
    android:color="?android:colorControlHighlight">
    <item android:drawable="@color/light_grey_header_navigation_drawer"/>
</ripple>

So, this allows you to set a background color and still have the ripple effect.
for me target and minSdk are 21.


The sample layout, which contains the Ripple effect as Background of the the parent layout.

<RelativeLayout 
                android:id="@+id/id4"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:background="@drawable/ripple_effect"
                android:clickable="true">

                <ImageView 
                    android:id="@+id/id3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentLeft="true"
                    android:background="@drawable/image"
                    android:layout_centerVertical="true"/>

                <LinearLayout
                    android:id="@+id/id2" 
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"
                    android:layout_alignParentRight="true"
                    android:layout_centerVertical="true">

                    <TextView 
                        android:id="@+id/id1"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="@string/text"/>

                </LinearLayout>
            </RelativeLayout>

Ripple_effect.xml Here you can use any colour of you choice. Make sure that you use sdk version 21 and have drawable-v21 and style-v21 folder and put all the file related to v21 in them.

<ripple xmlns:android="http://schemas.android.com/apk/res/android" 
                  android:color="?android:colorControlHighlight">
    <item android:id="@android:id/mask">
        <shape android:shape="oval">
            <solid android:color="?android:colorAccent" />
        </shape>
    </item>

Here you can use different shape like rectangle instead of oval...