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AndroidのボタンUIを角丸にしたい

Last updated at Posted at 2021-04-10

画面デザイン資料をもらった時、ボタンUIが角丸で枠線が付いていた為、次のような対応を行った。

リソースのlayout

まずはlayoutファイルにButtonを配置。

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button"
        android:textColor="#ffffffff"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
リソースのdrawable

つぎにshapeを使ったdrawableファイルを作成。

button_style.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <corners android:radius="10dip" />
    <solid android:color="#ff262626" />
    <stroke
        android:width="1dp"
        android:color="#ffffffff" />
</shape>
作成したdrawableをlayoutに適用

Buttonのbackground属性に作成したdrawableを設定する。

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button"
        android:textColor="#ffffffff"
        android:background="@drawable/button_style"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
イメージ

image.png

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