Listview selector with colored background and ripple effect

问题

Standard ListView selector in android L developer preview uses colorControlHighlight for the ripple effect on touch and has a transparent background in unfocused state.

I would like to define a ListView item that has a colored background and still shows the ripple effect on touch with the same highlight color. Now, if I define the following drawable:

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

it works, but the ripple starts in the middle of the ListView item, regardless of the touch position. If I use the same background outside of the ListView, e.g. for a LinearLayout, it works like expected (the ripple starts on the touch position).

回答1:

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.

回答2:

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);
                }
            });

回答3:

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>

回答4:

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.

回答5:

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...

回答6:

You can achieve this with a nested Layout. Just create e.g. a LinearLayout as root layout around your existing layout, set the ripple effect on the root layout and your background color to the nested one.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/ripple_effect"
    android:orientation="vertical">

    <RelativeLayout xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/containterContent"
        android:background="@color/yourCOLOR"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <!-- Your content -->

    </RelativeLayout>
</LinearLayout>

来源：https://stackoverflow.com/questions/25443496/listview-selector-with-colored-background-and-ripple-effect