Android L ripple touch effect on shape?

问题:

I have a rounded rectangle with elevation that casts a shadow, just like in the example here: http://developer.android.com/preview/material/views-shadows.html#shadows

Here is my shape:

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <solid android:color="@android:color/white" />
    <corners android:radius="6dp" />
</shape>

I want to get the nice "ripple" touch effect that everything else has, but when that's set as the view's background, no touch feedback is given. The shape stays white.

So, I made it into a layer-list:

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape xmlns:android="http://schemas.android.com/apk/res/android"
            android:shape="rectangle">
            <solid android:color="@android:color/white" />
            <corners android:radius="6dp" />
        </shape>
    </item>
    <item android:drawable="?android:selectableItemBackground" />
</layer-list>

Now I get nice touch feedback when I tap it, but there's a problem.

The outline of the rounded rectangle shape was lost. It still draws the white rounded rectangle fine, but the shadow is cast as a non-rounded rectangle (square edges), and the ripple goes all the way out past the corners:

It doesn't look too horrible on here, but on the device it's pretty ugly and off-putting.

Is there a way to fix this? The Outline section of the first link seems to be what I want, but I can't figure out how to implement it.

回答1:

Try that one:

ripple.xml

<?xml version="1.0" encoding="utf-8"?>
<ripple android:color="@color/COLOR_WHILE_PRESSING" xmlns:android="http://schemas.android.com/apk/res/android">
 <item android:drawable="@drawable/background"></item>
</ripple>

background.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
 <solid android:color="@color/BACKGROUND_COLOR" />
 <corners android:radius="6dp" />
</shape>

Or maybe this post will help you: Android L FAB Button shadow

I explained there, how to implement the new FAB button, I also used the outline for that.

回答2:

click here for complete source code

Create button.xml in drawable folder

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true" android:drawable="@color/colorPrimaryDark"/>
    <item android:drawable="@color/colorPrimary"/>
</selector>

Create button.xml in drawable-v21 folder

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

you can set button.xml as background of your view.

<TextView android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="8dp"
    android:background="@drawable/button"
    android:clickable="true"
    android:gravity="center"
    android:padding="16dp"
    android:text="Android Ripple Effect Custom"
    android:textColor="#fff"
    android:textSize="18sp" />

if you want custom color for ripple effect instead of default gray, then you can archive it by adding colorControlHighlight in your style.

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
        <item name="colorControlHighlight">@color/colorPrimaryDark</item>
    </style>

</resources>

回答3:

<RelativeLayout
 android:foreground="?android:attr/selectableItemBackground">

</RelativeLayout>

回答4:

ripple touch effect button in android studio

       <com.xgc1986.ripplebutton.widget.RippleButton
        android:id="@+id/Summit"
        android:layout_width="260dp"
        android:layout_height="50dp"
        android:text="Login"
        android:textColor="@color/white"
        android:textStyle="bold"
        app:buttonColor="@color/Button"
        app:rippleColor="@color/white" />

For more reference click here http://androiddhina.blogspot.in/2015/04/android-ripple-touch-effect-example.html