如何在 Android Studio 中更改 textView 形状和颜色

Question

我到处寻找改变 textView 形状和颜色的方法，我能找到的唯一解决方案是制作一个可绘制的资源文件。我做了什么： rounded_blue.xml

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#00BCD4" />
    <stroke
        android:width="3dp"
        android:color="#ffffff" />
    <corners android:radius="30dp" />
    <padding
        android:bottom="0dp"
        android:left="0dp"
        android:right="0dp"
        android:top="0dp" />
</shape>

但是当我将它应用到我的 textView 时，我得到了形状，但没有得到颜色。颜色变为默认颜色。

<Button
        android:id="@+id/loginButton"
        android:layout_width="249dp"
        android:layout_height="45dp"
        android:text="Login"
        android:background="@drawable/rounded_blue"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@+id/button_standard"
        app:layout_constraintHorizontal_bias="1.0"
        app:layout_constraintStart_toStartOf="@+id/button_standard"
        app:layout_constraintTop_toBottomOf="@+id/edittext_password"
        app:layout_constraintVertical_bias="0.086" />```

[This is what I get ][1]


  [1]: https://i.sstatic.net/f5P8Y.png

The edges are rounded as I wanted, but I want to change the button color. Why won't the color translate over as well?T