How to add button tint programmatically

According to the documentation the related method to android:backgroundTint is setBackgroundTintList(ColorStateList list)

Update

Follow this link to know how create a Color State List Resource.

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
    <item
        android:color="#your_color_here" />
</selector>

then load it using

setBackgroundTintList(contextInstance.getResources().getColorStateList(R.color.your_xml_name));

where contextInstance is an instance of a Context

---

using AppCompart

btnTag.setSupportButtonTintList(ContextCompat.getColorStateList(Activity.this, R.color.colorPrimary));

You could use

button.setBackgroundTintList(ColorStateList.valueOf(resources.getColor(R.id.blue_100)));

But I would recommend you to use a support library drawable tinting which just got released yesterday:

Drawable drawable = ...;

// Wrap the drawable so that future tinting calls work
// on pre-v21 devices. Always use the returned drawable.
drawable = DrawableCompat.wrap(drawable);

// We can now set a tint
DrawableCompat.setTint(drawable, Color.RED);
// ...or a tint list
DrawableCompat.setTintList(drawable, myColorStateList);
// ...and a different tint mode
DrawableCompat.setTintMode(drawable, PorterDuff.Mode.SRC_OVER);

You can find more in this blog post (see section "Drawable tinting")

Seems like views have own mechanics for tint management, so better will be put tint list:

ViewCompat.setBackgroundTintList(
    editText, 
    ColorStateList.valueOf(errorColor));

here's how to do it in kotlin:

view.background.setTint(ContextCompat.getColor(context, textColor))