如何创建标准的无边框按钮(如提到的设计指南)? [英] How to create standard Borderless buttons (like in the design guideline mentioned)?

问题描述

我只是在查看设计指南并想知道无边框按钮.我目瞪口呆，试图在来源中找到，但我自己无法将其整合在一起.这是普通的 Button 小部件，但您添加了自定义(Android 默认)样式吗?如何制作这些无边框按钮(当然你可以将背景设置为空，但是我没有分隔线)?

I was just checking the design guidelines and wondering about the borderless buttons. I goggled and tried to find in the source but can't bring it together by myself. Is this the normal Button widget but you add a custom (Android default) style? How to make these borderless buttons (of course you can set the background to empty, but then I don't have the divider)?

此处链接到设计指南:

• http://developer.android.com/design/building-blocks/button.html
• http://developer.android.com/guide/主题/ui/controls/button.html#Borderless

推荐答案

澄清一些困惑:

这分两步完成:将按钮背景属性设置为 android:attr/selectableItemBackground 为您创建一个有反馈但没有背景的按钮.

This is done in 2 steps: Setting the button background attribute to android:attr/selectableItemBackground creates you a button with feedback but no background.

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

将无边框按钮与其余布局分开的线由具有背景的视图完成 android:attr/dividerVertical

The line to divide the borderless button from the rest of you layout is done by a view with the background android:attr/dividerVertical

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

为了更好地理解这里是屏幕底部的确定"/取消"无边框按钮组合的布局(如上图右图所示).

For a better understanding here is a layout for a OK / Cancel borderless button combination at the bottom of your screen (like in the right picture above).

<RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="48dp"
        android:layout_alignParentBottom="true">
        <View
            android:layout_width="match_parent"
            android:layout_height="1dip"
            android:layout_marginLeft="4dip"
            android:layout_marginRight="4dip"
            android:background="?android:attr/dividerVertical"
            android:layout_alignParentTop="true"/>
        <View
            android:id="@+id/ViewColorPickerHelper"
            android:layout_width="1dip"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:layout_alignParentBottom="true"
            android:layout_marginBottom="4dip"
            android:layout_marginTop="4dip"
            android:background="?android:attr/dividerVertical" 
            android:layout_centerHorizontal="true"/>
        <Button
            android:id="@+id/BtnColorPickerCancel"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:layout_toLeftOf="@id/ViewColorPickerHelper"
            android:background="?android:attr/selectableItemBackground"
            android:text="@android:string/cancel" 
            android:layout_alignParentBottom="true"/>
        <Button
            android:id="@+id/BtnColorPickerOk"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_alignParentRight="true"
            android:layout_alignParentTop="true"
            android:background="?android:attr/selectableItemBackground"
            android:text="@android:string/ok" 
            android:layout_alignParentBottom="true" 
            android:layout_toRightOf="@id/ViewColorPickerHelper"/>
    </RelativeLayout>

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