Change font of the floating label EditText and TextInputLayout

Question

Someone tried to change the font of the floating label? I changed the source of EditText but the font of the floating label did not change, I am very grateful to those who h

Answer 1

Here is a custom class implementation for adneal's answer.

public class CustomTextInputLayout extends TextInputLayout {

    public CustomTextInputLayout(Context context) {
        super(context);
        initFont(context);
    }

    public CustomTextInputLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
        initFont(context);
    }

    private void initFont(Context context) {
        final Typeface typeface = Typeface.createFromAsset(
                context.getAssets(), "fonts/YOUR_CUSTOM_FONT.ttf");

        EditText editText = getEditText();
        if (editText != null) {
            editText.setTypeface(typeface);
        }
        try {
            // Retrieve the CollapsingTextHelper Field
            final Field cthf = TextInputLayout.class.getDeclaredField("mCollapsingTextHelper");
            cthf.setAccessible(true);

            // Retrieve an instance of CollapsingTextHelper and its TextPaint
            final Object cth = cthf.get(this);
            final Field tpf = cth.getClass().getDeclaredField("mTextPaint");
            tpf.setAccessible(true);

            // Apply your Typeface to the CollapsingTextHelper TextPaint
            ((TextPaint) tpf.get(cth)).setTypeface(typeface);
        } catch (Exception ignored) {
            // Nothing to do
        }
    }
}

In your XML files now you need to use CustomTextInputLayout instead of TextInputLayout and it will work out of the box.

Thanks adneal for the answer.