更改TextInputLayout错误字体?

问题描述

是否可以为EditText更改TextInputLayout错误文本字体?

Is it possible to change the TextInputLayout error text font for an EditText?

我只能通过app:errorTextAppearance更改颜色或文本大小.

I could only change the color or text size, via app:errorTextAppearance.

推荐答案

您可以使用SpannableString设置字体:

SpannableString s = new SpannableString(errorString);
s.setSpan(new TypefaceSpan(font), 0, s.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
mPasswordView.setError(s);

具有特定Typeface设置的自定义Span类:

A custom Span class that has a specific Typeface set:

public class TypefaceSpan extends MetricAffectingSpan {
    private Typeface mTypeface;
    public TypefaceSpan(Typeface typeface) {
        mTypeface = typeface;
    }

    @Override
    public void updateMeasureState(TextPaint p) {
        p.setTypeface(mTypeface);
        p.setFlags(p.getFlags() | Paint.SUBPIXEL_TEXT_FLAG);
    }

    @Override
    public void updateDrawState(TextPaint tp) {
        tp.setTypeface(mTypeface);
        tp.setFlags(tp.getFlags() | Paint.SUBPIXEL_TEXT_FLAG);
    }
}

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