对子视图的连锁反应不起作用 [英] ripple effect on child views not working

问题描述

这是布局代码

    <RelativeLayout android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="?android:attr/selectableItemBackground"
android:clickable="true"
android:focusable="true"
xmlns:android="http://schemas.android.com/apk/res/android" >
<TextView
    android:id="@+id/save"
    android:layout_centerVertical="true"
    android:text="@string/save"
    android:textSize="@dimen/text_size"
    android:textColor="@color/white"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />
<ImageView
    android:layout_toRightOf="@+id/save"
    android:layout_centerVertical="true"
    android:src="@drawable/ic_right_arrow"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" /></RelativeLayout>

ripple仅在儿童视图之外起作用.如何实现波纹以影响包括子视图在内的整个布局?

ripple works only outside child views. how to achieve ripple to effect whole layout including childviews?

推荐答案

您可以尝试更改

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

到

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

这将使波纹出现在RelativeLayout的顶部，因此所有的ChildView也会在它们上面得到波纹.

This will make the ripple appear on top of the RelativeLayout, so all your ChildViews will also get the ripple over them.

区别是:

在顶部RelativeLayout中，背景设置为selectableItemBackground，而在底部，前景设置为selectableItemBackground

In the top RelativeLayout the background is set as selectableItemBackground, whereas in the bottom the foreground is set as selectableItemBackground

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