为 android.support.design.widget 更改 TextInputLayout 的 boxBackgroundColor

Question

I want to change dynamically boxBackgroundColor of TextInputLayout when editText.setEnables(false) . I've tried to do this via res/color/selector_input_background_color but it didn't work. Also TextInputLayout ( android.support.design.widget.TextInputLayout ) doesn't have such parameter as boxBackgroundColor ! ;( - it's ONLY preset in AndroidX library ( com.google.android.material.textfield.TextInputLayout ), that I'm afraid to migrate to right now. (Old project)

here is how my layout look like

<android.support.design.widget.TextInputLayout
        [...]
        android:theme="@style/TextInputLayoutTheme"
        style="@style/TextInputLayoutStyle">

        <android.support.design.widget.TextInputEditText
             [...]
             />

</android.support.design.widget.TextInputLayout>

TIL inherit styles from new MaterialDesign

<style name="TextInputLayoutStyle" parent="Widget.MaterialComponents.TextInputLayout.FilledBox.Dense">
    <item name="boxBackgroundColor">@color/selector_input_background_color</item>
</style>

And depending on state I provided selector inside res/color

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_enabled="false" android:color="#00FF00"/>
    <item android:color="@color/editTextBackground"/>
</selector>

I'm afraid this is a bug, because Google promise to keep compability with 28.0.0 support library version and AndroidX. What's funny even if TextInputLayout doesn't have method such as .setBoxBackgroundColor it works inside style - but selector doesn't.

I suspect due to this gap, even if I have selector boxBackgroundColor it is not called when EditText change state:enabled , because TextInputLayout don't know that parameter - however it somehow magically used at the begin when the layout is loaded.

Answer 1

Currently there is only workaround for it.

You can use support library as long as You want to keep the same box color all the time.

<style name="TextInputLayoutStyle" parent="Widget.MaterialComponents.TextInputLayout.FilledBox.Dense">
    <item name="boxBackgroundColor">@color/selector_input_background_color</item>
</style>

However if You want to change its color (eg that indicated that field is disabled), You have to change it programatically. But there is one hitch. You have to switch to androidX , because in android.support there is lack of this method.

So You have to do

textInputLayoutPhone.setBoxBackgroundColorResource(R.color.editTextDisableBackground);