In this tutorial, we’ll be focusing on MaterialButtonToggleGroup, newly introduced with Android Material Components.

在本教程中，我们将重点介绍Android Material Components刚引入的MaterialButtonToggleGroup 。

Android MaterialButtonToggleGroup (Android MaterialButtonToggleGroup)

Also known as ToggleButton, this used to host buttons with checkable behavior. It resembles SegmentedControl in iOS. Users can select one or multiple choices from the group.

也称为ToggleButton，用于托管具有可检查行为的按钮。 它类似于iOS中的SegmentedControl。 用户可以从组中选择一个或多个选项。

In order to use Material Components, we need to import the following:

为了使用Material Components，我们需要导入以下内容：

implementation 'com.google.android.material:material:1.0.0'

Here’s how we define a MaterialButtonToggleGroup in XML:

这是我们在XML中定义MaterialButtonToggleGroup的方法：

<com.google.android.material.button.MaterialButtonToggleGroupandroid:id="@+id/toggleGroup"android:layout_width="wrap_content"android:layout_height="wrap_content"app:checkedButton="@id/btnB"app:singleSelection="true"><Button.../><Buttonandroid:id="@+id/btnB".../></com.google.android.material.button.MaterialButtonToggleGroup>

app:singleSelection attribute is much like the RadioGroup.

app:singleSelection属性非常类似于RadioGroup 。

Material Components lets us style the following things on our UI:

通过Material Components，我们可以在UI上设置以下样式：

• Colors色彩
• Shapes形状
• Typography版式

In the next section, we’ll customize our MaterialButtonToggleGroup with various shapes, color, and fonts!
Let’s get started with a fresh new Android Studio Project.

在下一节中，我们将使用各种形状，颜色和字体自定义MaterialButtonToggleGroup！
让我们开始一个全新的Android Studio项目。

项目结构 (Project Structure)

Android Material Button Toggle Group Project

Android Material Button切换小组项目

In the next sections, we’ll deal with different styles of MaterialButtonToggleGroups.

在接下来的部分中，我们将处理MaterialStyleToggleGroups的不同样式。

基本用法 (Basic Usage)

<com.google.android.material.button.MaterialButtonToggleGroupandroid:id="@+id/toggleGroup"android:layout_width="wrap_content"android:layout_height="wrap_content"app:checkedButton="@id/btnAndroid"app:singleSelection="true"><Buttonandroid:id="@+id/btnAndroid"style="@style/Widget.MaterialComponents.Button.OutlinedButton"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="Android" /><Buttonandroid:id="@+id/btniOS"style="@style/Widget.MaterialComponents.Button.OutlinedButton"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="iOS" /></com.google.android.material.button.MaterialButtonToggleGroup>

Android Material Toggle Basic

Android Material Toggle基本

The recommended style for Button in a MaterialButton is Widget.MaterialComponents.Button.OutlinedButton.

MaterialButton中Button的推荐样式是Widget.MaterialComponents.Button.OutlinedButton 。

带图标和文字 (With Icon and Text)

To use icons in Buttons, we’ll use MaterialButton:

要在Buttons中使用图标，我们将使用MaterialButton：

<com.google.android.material.button.MaterialButtonToggleGroupandroid:id="@+id/toggleGroup2"android:layout_width="wrap_content"android:layout_height="wrap_content"app:checkedButton="@id/btnA"app:singleSelection="true"><com.google.android.material.button.MaterialButtonandroid:id="@+id/btnA"style="@style/Widget.MaterialComponents.Button.OutlinedButton.Icon"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="Android"app:icon="@drawable/ic_android" /><com.google.android.material.button.MaterialButtonandroid:id="@+id/btnS"style="@style/Widget.MaterialComponents.Button.OutlinedButton.Icon"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="Sunny"app:icon="@drawable/ic_wb_sunny" /></com.google.android.material.button.MaterialButtonToggleGroup>

Android Material Toggle Icon Text

Android Material Toggle图标文字

仅带有图标 (With Icon only)

If we need to use only icons and no text we need to set our custom style. Otherwise, there would be extra padding for text.

如果只需要使用图标而不使用文本，则需要设置自定义样式。 否则，将会有额外的文本填充。

Add the following in styles.xml:

在styles.xml中添加以下内容：

<style name="IconOnlyButton" parent="Widget.MaterialComponents.Button.OutlinedButton"><item name="iconPadding">0dp</item><item name="iconGravity">textStart</item></style>

The code for the Material Button Toggle Group icon only is:

“材质按钮切换组”图标的代码仅是：

<com.google.android.material.button.MaterialButtonToggleGroupandroid:id="@+id/toggleGroup3"android:layout_width="wrap_content"android:layout_height="wrap_content"app:singleSelection="false"><com.google.android.material.button.MaterialButtonstyle="@style/IconOnlyButton"android:layout_width="wrap_content"android:layout_height="wrap_content"app:icon="@drawable/ic_signal_wifi_off"app:iconTint="@android:color/holo_red_light" /><com.google.android.material.button.MaterialButtonstyle="@style/IconOnlyButton"android:layout_width="wrap_content"android:layout_height="wrap_content"app:icon="@drawable/ic_signal_wifi_3_bar_lock" /><com.google.android.material.button.MaterialButtonstyle="@style/IconOnlyButton"android:layout_width="wrap_content"android:layout_height="wrap_content"app:icon="@drawable/ic_wifi" /></com.google.android.material.button.MaterialButtonToggleGroup>

Android Material Toggle Icon Only

仅适用于Android Material Toggle图标

In the above code, we’ve also added iconTint and multi selections.

在上面的代码中，我们还添加了iconTint和多重选择。

设定形状 (Setting Shapes)

To set custom shapes we need to set cornerFamily attribute in a custom style as shown below:

要设置自定义形状，我们需要以自定义样式设置cornerFamily属性，如下所示：

<style name="Cut" parent="ShapeAppearance.MaterialComponents.MediumComponent"><item name="cornerFamily">cut</item><item name="cornerSize">12dp</item></style>

The above style is then set in the shapeAppearance attribute of MaterialButton:

然后在MaterialButton的shapeAppearance属性中设置以上样式：

<com.google.android.material.button.MaterialButtonToggleGroupandroid:id="@+id/toggleGroup4"android:layout_width="wrap_content"android:layout_height="wrap_content"app:singleSelection="false"><com.google.android.material.button.MaterialButtonstyle="@style/IconOnlyButton"android:layout_width="wrap_content"android:layout_height="wrap_content"app:icon="@drawable/ic_signal_wifi_off"app:strokeWidth="2dp"app:shapeAppearance="@style/Cut" /><com.google.android.material.button.MaterialButtonstyle="@style/IconOnlyButton"android:layout_width="wrap_content"android:layout_height="wrap_content"app:strokeWidth="2dp"app:icon="@drawable/ic_signal_wifi_3_bar_lock" /><com.google.android.material.button.MaterialButtonstyle="@style/IconOnlyButton"android:layout_width="wrap_content"android:layout_height="wrap_content"app:icon="@drawable/ic_wifi"app:strokeWidth="2dp"app:shapeAppearance="@style/Cut" /></com.google.android.material.button.MaterialButtonToggleGroup>

In the above code, we’ve also set a strokeWidth on the outline button.

在上面的代码中，我们还在大纲按钮上设置了strokeWidth 。

Android Material Toggle Button Shape Cut

Android Material Toggle按钮形状切割

圆角形状 (Shape Rounded)

We can set a custom rounded shape with corner radius defined as shown below:

我们可以设置自定义的圆角形状，其圆角半径如下所示：

<style name="Rounded" parent="ShapeAppearance.MaterialComponents.SmallComponent"><item name="cornerFamily">rounded</item><item name="cornerSize">16dp</item></style>

<com.google.android.material.button.MaterialButtonToggleGroupandroid:id="@+id/toggleGroup5"android:layout_width="wrap_content"android:layout_height="wrap_content"app:singleSelection="false"><com.google.android.material.button.MaterialButtonstyle="@style/IconOnlyButton"android:layout_width="wrap_content"android:layout_height="wrap_content"app:icon="@drawable/ic_signal_wifi_off"app:shapeAppearance="@style/Rounded"app:strokeColor="@android:color/black"app:strokeWidth="4dp" /><com.google.android.material.button.MaterialButtonstyle="@style/IconOnlyButton"android:layout_width="wrap_content"android:layout_height="wrap_content"app:icon="@drawable/ic_signal_wifi_3_bar_lock"app:strokeColor="@android:color/black"app:strokeWidth="4dp" /><com.google.android.material.button.MaterialButtonstyle="@style/IconOnlyButton"android:layout_width="wrap_content"android:layout_height="wrap_content"app:icon="@drawable/ic_wifi"app:shapeAppearance="@style/Rounded"app:strokeColor="@android:color/black"app:strokeWidth="4dp" /></com.google.android.material.button.MaterialButtonToggleGroup>

Android Material Toggle Button Shape Rounded

Android材质切换按钮形状四舍五入

与版式 (With Typography)

The following style adds a font family on the text of the MaterialButtons:

以下样式在MaterialButtons的文本上添加了字体系列：

<style name="CustomFont" parent="TextAppearance.MaterialComponents.Headline4"><item name="fontFamily">@font/amatic</item><item name="android:textAllCaps">false</item></style>

<com.google.android.material.button.MaterialButtonToggleGroupandroid:id="@+id/toggleGroup6"android:layout_width="wrap_content"android:layout_height="wrap_content"app:singleSelection="false"><com.google.android.material.button.MaterialButtonstyle="@style/Widget.MaterialComponents.Button.OutlinedButton"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="Java"android:textAppearance="@style/CustomFont"app:strokeColor="@android:color/black" /><com.google.android.material.button.MaterialButtonstyle="@style/Widget.MaterialComponents.Button.OutlinedButton"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="Python"android:textAppearance="@style/CustomFont"app:strokeColor="@android:color/black" /><com.google.android.material.button.MaterialButtonstyle="@style/Widget.MaterialComponents.Button.OutlinedButton"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="C++"android:textAppearance="@style/CustomFont"app:strokeColor="@android:color/black" /></com.google.android.material.button.MaterialButtonToggleGroup>

We’ve already added a custom font file in the font folder under res.

我们已经在res下的font文件夹中添加了自定义字体文件。

MaterialButtonToggleGroup has an addOnButtonCheckedListener callback which gets triggered when a button is checked.

MaterialButtonToggleGroup具有addOnButtonCheckedListener回调，该回调在选中按钮时触发。

That brings an end to this tutorial. You can download the source code containing all the above customizations from the links below:

这样就结束了本教程。 您可以从下面的链接下载包含上述所有自定义项的源代码：

翻译自: https://www.journaldev.com/31950/android-materialbuttontogglegroup