Change TextInputLayout accent color programmatically

Question

I\'ve got a simple TextInputLayout containing an EditText View.

Now I wonder how to change the accent color (underline, hintTextColor when highlighted) programmatica

Answer 1

You can try this for the text,

InputTextLayout.getEditText().setHighlightColor(yourColor);
InputTextLayout.getEditText().setHintTextColor(yourColor);

and this for the line at the bottom of the EditText

Drawable background = InputTextLayout.getEditText().getBackground();
DrawableCompat.setTint(background, yourColor);
InputTextLayout.getEditText().setBackground(background);

Hope it works!

Answer 2

IMHO InputTextLayout can not change label color programmatically, because it is set by style. I examined source code of InputTextLayout and wrote this hack helper method which create access to private color member:

public static void setInputTextLayoutColor(EditText editText, @ColorInt int color) {
    TextInputLayout til = (TextInputLayout) editText.getParent();
    try {
        Field fDefaultTextColor = TextInputLayout.class.getDeclaredField("mDefaultTextColor");
        fDefaultTextColor.setAccessible(true);
        fDefaultTextColor.set(til, new ColorStateList(new int[][]{{0}}, new int[]{ color }));

        Field fFocusedTextColor = TextInputLayout.class.getDeclaredField("mFocusedTextColor");
        fFocusedTextColor.setAccessible(true);
        fFocusedTextColor.set(til, new ColorStateList(new int[][]{{0}}, new int[]{ color }));
    } catch (Exception e) {
        e.printStackTrace();
    }
}

mFocusedTextColor is used for set internal CollapsingTextHelper.mCollapsedTextColor which sets color of label.