我希望ViewGroup中的ImageView在按下时绘制波纹并且这是正常的!但是当按下ViewGroup时,其中的ImageView应该保持透明,否则ImageView背景可见:(实际上看到的颜色为alpha-orange,是按下时的纹波)。
只有设备API 21+才会发生这种情况。使用设备API< 21时,我使用选择器,当按下ViewGroup时,图像背景保持透明。
layout.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/item_detail_field"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="@dimen/margin_left"
android:paddingStart="@dimen/margin_left"
android:paddingTop="@dimen/margin_top_item_field"
android:paddingBottom="@dimen/margin_bottom"
android:baselineAligned="false"
android:background="@drawable/layout"
android:stateListAnimator="@anim/touch_raise"
android:orientation="horizontal">
...
<ImageView
android:id="@+id/item_detail_showfield_icon"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/button_mini_oval"
android:stateListAnimator="@anim/touch_raise"
android:clickable="true"
android:contentDescription="@null"
android:scaleType="center"
android:visibility="invisible"
android:src="@drawable/show_button"/>
...
</LinearLayout>
抽拉/ button_mini_oval.xml
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true">
<shape android:shape="oval">
<solid android:color="@color/primary_highlight" />
</shape>
</item>
<item>
<shape android:shape="oval">
<solid android:color="@android:color/transparent" />
</shape>
</item>
</selector>
绘制-V21 / button_mini_oval.xml
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:exitFadeDuration="@android:integer/config_shortAnimTime"
android:color="?android:colorControlHighlight">
<item android:state_pressed="true">
<shape android:shape="oval">
<solid android:color="@android:color/white" />
</shape>
</item>
<item>
<color android:color="@android:color/transparent" />
</item>
</ripple>
我在ripple xml中尝试了很多配置,添加<selector>
它可以(见下文),但是如果你只是点击ImageView,则纹波不可见(波纹动画似乎被切断了),只有你一直按下,你才会看到涟漪......
在正常状态下,压力状态下是否有波纹和透明是什么组合?
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:exitFadeDuration="@android:integer/config_shortAnimTime"
android:color="?android:colorControlHighlight">
<item>
<selector>
<item android:state_pressed="true">
<shape android:shape="oval">
<solid android:color="@android:color/white" />
</shape>
</item>
<item>
<color android:color="@android:color/transparent" />
</item>
</selector>
</item>
</ripple>
答案 0 :(得分:5)
删除android:state_pressed="true"
,我找到了2个解决方案,但在这两种情况下我都丢失了 touch_raise 动画(为什么?):
带有蒙面纹波:
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:exitFadeDuration="@android:integer/config_shortAnimTime"
android:color="?android:colorControlHighlight">
<item android:id="@android:id/mask">
<selector>
<item>
<shape android:shape="oval">
<solid android:color="@android:color/white" />
</shape>
</item>
<item>
<color android:color="@android:color/transparent" />
</item>
</selector>
</item>
</ripple>
带有未屏蔽的小纹波(比1好):
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:exitFadeDuration="@android:integer/config_shortAnimTime"
android:color="?android:colorControlHighlight">
<selector>
<item>
<color android:color="@android:color/transparent" />
</item>
</selector>
</ripple>
我不知道为什么添加<selector>
以便在透明背景上产生涟漪就足够了!!! 很多人都试图实现这一目标,但它不是'谷歌的意图,相反,这种情况非常有用。
答案 1 :(得分:5)
对我来说,它有效
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="@color/white"
android:radius="3dp">
<item android:drawable="@drawable/transparent_ripple_button"/>
</ripple>
和单独的
transparent_ripple_button.xml
在您的文件夹中
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_focused="true">
<shape android:shape="rectangle">
<solid android:color="@color/black_12" />
<stroke android:width="0.2dp" android:color="@color/white" />
<corners android:radius="3dp" />
</shape>
</item>
<item android:state_pressed="true">
<shape android:shape="rectangle">
<solid android:color="@color/black_12" />
<stroke android:width="0.2dp" android:color="@color/white" />
<corners android:radius="3dp" />
</shape>
</item>
<item>
<shape android:shape="rectangle">
<solid android:color="@android:color/transparent" />
<stroke android:width="0.2dp" android:color="@color/white" />
<corners android:radius="3dp" />
</shape>
</item>
</selector>