鸿蒙开发之Button按钮有哪些类型,如何通过代码设置

发布于 2020-9-22 11:54
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Button类型分类


按照按钮的形状,按钮可以分为:

 

普通按钮
椭圆按钮
胶囊按钮
圆形按钮
其它
 
Button类型效果和代码

 

普通按钮


普通按钮和其他按钮的区别在于不需要设置任何形状,只设置文本和背景颜色即可,例如:鸿蒙开发之Button按钮有哪些类型,如何通过代码设置-鸿蒙HarmonyOS技术社区

 

<Button
    ohos:width="150vp"
    ohos:height="50vp"
    ohos:text_size="27fp"
    ohos:text="button"
    ohos:background_element="$graphic:color_blue_element"
    ohos:left_margin="15vp"
    ohos:bottom_margin="15vp"
    ohos:right_padding="8vp"
    ohos:left_padding="8vp"
/>

 

椭圆按钮


椭圆按钮是通过设置background_element的来实现的,background_element的shape设置为椭圆(oval),例如:

鸿蒙开发之Button按钮有哪些类型,如何通过代码设置-鸿蒙HarmonyOS技术社区

<Button
    ohos:width="150vp"
    ohos:height="50vp"
    ohos:text_size="27fp"
    ohos:text="button"
    ohos:background_element="$graphic:oval_button_element"
    ohos:left_margin="15vp"
    ohos:bottom_margin="15vp"
    ohos:right_padding="8vp"
    ohos:left_padding="8vp"
    ohos:element_left="$graphic:ic_btn_reload"
/>

 

胶囊按钮


胶囊按钮是一种常见的按钮,设置按钮背景时将背景设置为矩形形状,并且设置ShapeElement的radius的半径,例如:

鸿蒙开发之Button按钮有哪些类型,如何通过代码设置-鸿蒙HarmonyOS技术社区

<Button
    ohos:id="$+id:button"
    ohos:width="match_content"
    ohos:height="match_content"
    ohos:text_size="27fp"
    ohos:text="button"
    ohos:background_element="$graphic:capsule_button_element"
    ohos:left_margin="15vp"
    ohos:bottom_margin="15vp"
    ohos:right_padding="15vp"
    ohos:left_padding="15vp"
/>

 

圆形按钮


圆形按钮和椭圆按钮的区别在于组件本身的宽度和高度需要相同,例如:鸿蒙开发之Button按钮有哪些类型,如何通过代码设置-鸿蒙HarmonyOS技术社区

<Button
    ohos:id="$+id:button4"
    ohos:width="50vp"
    ohos:height="50vp"
    ohos:text_size="27fp"
    ohos:background_element="$graphic:circle_button_element"
    ohos:text="+"
    ohos:left_margin="15vp"
    ohos:bottom_margin="15vp"
    ohos:right_padding="15vp"
    ohos:left_padding="15vp"
/>

 

场景示例


利用圆形按钮,胶囊按钮,文本组件可以绘制出如下拨号盘的UI界面。

鸿蒙开发之Button按钮有哪些类型,如何通过代码设置-鸿蒙HarmonyOS技术社区

<?xml version="1.0" encoding="utf-8"?>
<DirectionalLayout
    xmlns:ohos="http://schemas.huawei.com/res/ohos"
    ohos:width="match_parent"
    ohos:height="match_parent"
    ohos:background_element="$graphic:color_light_gray_element"
    ohos:orientation="vertical">
    <Text
        ohos:width="match_content"
        ohos:height="match_content"
        ohos:text_size="20fp"
        ohos:text="0123456789"
        ohos:background_element="$graphic:green_text_element"
        ohos:text_alignment="center"
        ohos:layout_alignment="horizontal_center"
    />
    <DirectionalLayout
        ohos:width="match_parent"
        ohos:height="match_content"
        ohos:alignment="horizontal_center"
        ohos:orientation="horizontal"
        ohos:top_margin="5vp"
        ohos:bottom_margin="5vp">
        <Button
            ohos:width="40vp"
            ohos:height="40vp"
            ohos:text_size="15fp"
            ohos:background_element="$graphic:green_circle_button_element"
            ohos:text="1"
            ohos:text_alignment="center"
        />
        <Button
            ohos:width="40vp"
            ohos:height="40vp"
            ohos:text_size="15fp"
            ohos:background_element="$graphic:green_circle_button_element"
            ohos:text="2"
            ohos:left_margin="5vp"
            ohos:right_margin="5vp"
            ohos:text_alignment="center"
        />
        <Button
            ohos:width="40vp"
            ohos:height="40vp"
            ohos:text_size="15fp"
            ohos:background_element="$graphic:green_circle_button_element"
            ohos:text="3"
            ohos:text_alignment="center"
        />
    </DirectionalLayout>
    <DirectionalLayout
        ohos:width="match_parent"
        ohos:height="match_content"
        ohos:alignment="horizontal_center"
        ohos:orientation="horizontal"
        ohos:bottom_margin="5vp">
        <Button
            ohos:width="40vp"
            ohos:height="40vp"
            ohos:text_size="15fp"
            ohos:background_element="$graphic:green_circle_button_element"
            ohos:text="4"
            ohos:text_alignment="center"
        />
        <Button
            ohos:width="40vp"
            ohos:height="40vp"
            ohos:text_size="15fp"
            ohos:left_margin="5vp"
            ohos:right_margin="5vp"
            ohos:background_element="$graphic:green_circle_button_element"
            ohos:text="5"
            ohos:text_alignment="center"
        />
        <Button
            ohos:width="40vp"
            ohos:height="40vp"
            ohos:text_size="15fp"
            ohos:background_element="$graphic:green_circle_button_element"
            ohos:text="6"
            ohos:text_alignment="center"
        />
    </DirectionalLayout>
    <DirectionalLayout
        ohos:width="match_parent"
        ohos:height="match_content"
        ohos:alignment="horizontal_center"
        ohos:orientation="horizontal"
        ohos:bottom_margin="5vp">
        <Button
            ohos:width="40vp"
            ohos:height="40vp"
            ohos:text_size="15fp"
            ohos:background_element="$graphic:green_circle_button_element"
            ohos:text="7"
            ohos:text_alignment="center"
        />
        <Button
            ohos:width="40vp"
            ohos:height="40vp"
            ohos:text_size="15fp"
            ohos:left_margin="5vp"
            ohos:right_margin="5vp"
            ohos:background_element="$graphic:green_circle_button_element"
            ohos:text="8"
            ohos:text_alignment="center"
        />
        <Button
            ohos:width="40vp"
            ohos:height="40vp"
            ohos:text_size="15fp"
            ohos:background_element="$graphic:green_circle_button_element"
            ohos:text="9"
            ohos:text_alignment="center"
        />
    </DirectionalLayout>
    <DirectionalLayout
        ohos:width="match_parent"
        ohos:height="match_content"
        ohos:alignment="horizontal_center"
        ohos:orientation="horizontal"
        ohos:bottom_margin="5vp">
        <Button
            ohos:width="40vp"
            ohos:height="40vp"
            ohos:text_size="15fp"
            ohos:background_element="$graphic:green_circle_button_element"
            ohos:text="*"
            ohos:text_alignment="center"
        />
        <Button
            ohos:width="40vp"
            ohos:height="40vp"
            ohos:text_size="15fp"
            ohos:left_margin="5vp"
            ohos:right_margin="5vp"
            ohos:background_element="$graphic:green_circle_button_element"
            ohos:text="0"
            ohos:text_alignment="center"
        />
        <Button
            ohos:width="40vp"
            ohos:height="40vp"
            ohos:text_size="15fp"
            ohos:background_element="$graphic:green_circle_button_element"
            ohos:text="#"
            ohos:text_alignment="center"
        />
    </DirectionalLayout>
    <Button
        ohos:width="match_content"
        ohos:height="match_content"
        ohos:text_size="15fp"
        ohos:text="CALL"
        ohos:background_element="$graphic:green_capsule_button_element"
        ohos:bottom_margin="5vp"
        ohos:text_alignment="center"
        ohos:layout_alignment="horizontal_center"
        ohos:left_padding="10vp"
        ohos:right_padding="10vp"
        ohos:top_padding="2vp"
        ohos:bottom_padding="2vp"
    />
</DirectionalLayout>

 

 

作者:知识大胖

来源:CSDN

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