Material Design TextInputEditText Border Color When Not Activated

Question

I'm placing a TextInputEditText widget onto a white background. When the fragment first loads, the widget does not have focus. The border around the widget is white (or almost white), so it is invisible on a white background. Here is a screenshot of that widget, drawn on a black background for contrast:

As soon as I tap on the widget, the border becomes that of my primary color, which is exactly what I want. Here is a similar screenshot after the widget is activated.

I'm trying to control these colors through a style, and I've tried everything that I can think of, but I cannot figure out how to adjust that color. Here is my style (feel free to laugh at the various attempts):

<style name="MyTextInputLayout" parent="Base.Widget.MaterialComponents.TextInputLayout">
    <item name="android:colorBackground">@android:color/black</item>
    <item name="android:textColorHint">@color/colorPrimary</item>
    <item name="android:paddingStart">16dp</item>
    <item name="android:paddingEnd">16dp</item>
    <item name="android:colorControlActivated">@android:color/black</item>
    <item name="android:colorControlNormal">@android:color/black</item>
    <item name="android:colorControlHighlight">@android:color/black</item>
    <item name="android:backgroundTint">@android:color/black</item>
    <item name="android:colorAccent">@android:color/black</item>
</style>

<style name="MyTextInputEditText" parent="ThemeOverlay.MaterialComponents.TextInputEditText">
    <item name="android:textColor">@android:color/black</item>
    <item name="android:colorBackground">@android:color/black</item>
    <item name="android:colorControlActivated">@android:color/black</item>
    <item name="android:colorControlNormal">@android:color/black</item>
    <item name="android:colorControlHighlight">@android:color/black</item>
    <item name="android:backgroundTint">@android:color/black</item>
    <item name="android:colorAccent">@android:color/black</item>
</style>

And finally, the xml of the layout in case it is helpful:

<com.google.android.material.textfield.TextInputLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="16dp"
    android:layout_marginBottom="16dp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    style="@style/MyTextInputLayout">

    <com.google.android.material.textfield.TextInputEditText
        android:id="@+id/reg_username"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="@string/username"
        style="@style/MyTextInputEditText"/>

</com.google.android.material.textfield.TextInputLayout>

How can I change this border color when the widget is not active (i.e. does not have focus)?

Answer 1

I solved this in two main steps:

1. First problem I had was that the parent style for my TextInputLayout style needed to be changed to Widget.MaterialComponents.TextInputLayout.OutlinedBox.

2. Once I figured that out, I traced through the Android xml for that style and got to a file called mtrl_box_stroke_color.xml. This is a selector where the three colors for the standard TextInputLayout border are declared. That file looks like this:

So I copied that and created my own file in the res/color folder that I called edit_text_box_border.xml. I modified the three colors to suit my purposes, ultimately coming up with this:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="?attr/colorPrimary" android:state_focused="true"/>
    <item android:alpha="0.87" android:color="@color/colorPrimary" android:state_hovered="true"/>
    <item android:alpha="0.12" android:color="@color/colorPrimary" android:state_enabled="false"/>
    <item android:alpha="0.38" android:color="@color/colorPrimary"/>
</selector>

Then, back in my style, I had to get rid of my many color attempts and add an item for boxStrokeColor that pointed to this file. Here are both styles:

<style name="MyTextInputLayout" parent="Widget.MaterialComponents.TextInputLayout.OutlinedBox">
        <item name="android:textColorHint">@color/colorPrimary</item>
        <item name="android:paddingStart">16dp</item>
        <item name="android:paddingEnd">16dp</item>
        <item name="boxStrokeColor">@color/edit_text_box_border</item>
    </style>

    <style name="MyTextInputEditText" parent="ThemeOverlay.MaterialComponents.TextInputEditText.OutlinedBox.Dense">
        <item name="android:textColor">@android:color/black</item>
    </style>

Now, when I run the app, I start out with this:

Which then turns into this when I tap on it:

That's what I was going for, so problem solved. Hope this helps someone.

Answer 2

1.

<com.google.android.material.textfield.TextInputLayout
 ...
 style="@style/Widget.MaterialComponents.TextInputLayout.OutlineBox"
 app:boxStrokeColor = "@android:color/holo_purple"  
 //border color when in active status
 ...

2. add the following in colors.xml file

<color name="mtrl_textinput_default_box_stroke_color">#00ff00</color> //border color when in inactive status