按钮颜色不变

Question

我设计了一个按钮， this is how it should be 但是 this is how it is. 设计改变了，但颜色和边框没有。

我在其中使用按钮的片段文件是：

<?xml version="1.0" encoding="utf-8"?>

<androidx.core.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".HomeFragment">


        <Button
            android:id="@+id/button_goToOt"
            android:layout_width="200dp"
            android:layout_height="wrap_content"
            android:text="OT Room Lights"
            android:background="@drawable/button_design"
            android:shadowColor="#A8A8A8"
            android:shadowDx="0"
            android:shadowDy="0"
            android:shadowRadius="5"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/OTText" />

        <TextView
            android:id="@+id/OTText"
            android:layout_width="0dp"
            android:layout_height="47dp"
            android:layout_marginTop="16dp"
            android:gravity="center_horizontal"
            android:text="Main Menu"
            android:textAlignment="center"
            android:textAppearance="@style/TextAppearance.AppCompat.Display1"
            android:textColor="@color/material_on_background_emphasis_high_type"
            android:textStyle="bold"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <Button
            android:id="@+id/button_goToSurgical"
            android:layout_width="200dp"
            android:layout_height="wrap_content"
            android:layout_marginTop="16dp"
            android:text="Surgical Lights"
            android:background="@drawable/button_design"
            android:shadowColor="#A8A8A8"
            android:shadowDx="0"
            android:shadowDy="0"
            android:shadowRadius="5"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/button_goToOt" />

        <Button
            android:id="@+id/button_goToLaminar"
            android:layout_width="200dp"
            android:layout_height="wrap_content"
            android:layout_marginTop="16dp"
            android:layout_marginBottom="16dp"
            android:text="Laminar Airflow"
            android:background="@drawable/button_design"
            android:shadowColor="#A8A8A8"
            android:shadowDx="0"
            android:shadowDy="0"
            android:shadowRadius="5"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/button_goToSurgical" />


    </androidx.constraintlayout.widget.ConstraintLayout>

</androidx.core.widget.NestedScrollView>

button_design.xml是

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
    <corners
        android:topLeftRadius="100dp"
        android:topRightRadius="0dp"
        android:bottomLeftRadius="0dp"
        android:bottomRightRadius="100dp"
        />
    <gradient
        android:angle="45"
        android:centerX="35%"
        android:centerColor="#00A2A8"
        android:startColor="#E8E8E8"
        android:endColor="#000000"
        android:type="linear"
        />
    <padding
        android:left="0dp"
        android:top="0dp"
        android:right="0dp"
        android:bottom="0dp"
        />
    <size
        android:width="270dp"
        android:height="60dp"
        />
    <stroke
        android:width="3dp"
        android:color="#878787"
        />
</shape>

关于如何操作的任何帮助？我看了一个教程，他只是简单地更改了背景并且它起作用了，但它在我的情况下不起作用有人知道为什么吗？

Answer 1

为避免采用默认的 Button 样式，请将 app:backgroundTint="@null" 添加到每个使用此 drawable

的 Button

这将确保按钮背景不会变色

按钮颜色不变

Button color not changing

android

android-button