android - 更改 EditText setError() 的字体系列

Question

我想更改EditText setError() 的字体系列。

我已经试过了:

editText.setError(Html.fromHtml("<span style=\"font-family: sans-serif !important\">hello</span>"));

当用户选择另一种字体时，我想更改三星手机中错误消息的字体系列。

任何想法将不胜感激。

提前致谢

Answer 1

你可以试试这个:

Typeface typeFaceDefault = Typeface.createFromAsset(getAssets(), "BYekan.ttf");

TextInputLayout inputLayout = (TextInputLayout) view.findViewById(R.id.lyt_input); 

SpannableStringBuilder ssbuilder = new SpannableStringBuilder(getString(R.string.err_wrong_input));
ssbuilder.setSpan(new CustomTypefaceSpan("", ActivityMain.typeFaceDefault), 0, ssbuilder.length(), Spanned.SPAN_EXCLUSIVE_INCLUSIVE);    
inputLayout.setError(ssbuilder);

那么你的元素中也包含了这个文件:

public class CustomTypefaceSpan extends TypefaceSpan {

    private final Typeface newType;

    public CustomTypefaceSpan(String family, Typeface type) {
        super(family);
        newType = type;
    }

    @Override
    public void updateDrawState(TextPaint ds) {
        applyCustomTypeFace(ds, newType);
    }

    @Override
    public void updateMeasureState(TextPaint paint) {
        applyCustomTypeFace(paint, newType);
    }

    private static void applyCustomTypeFace(Paint paint, Typeface tf) {
        int oldStyle;
        Typeface old = paint.getTypeface();
        if (old == null) {
            oldStyle = 0;
        } else {
            oldStyle = old.getStyle();
        }

        int fake = oldStyle & ~tf.getStyle();
        if ((fake & Typeface.BOLD) != 0) {
            paint.setFakeBoldText(true);
        }

        if ((fake & Typeface.ITALIC) != 0) {
            paint.setTextSkewX(-0.25f);
        }

        paint.setTypeface(tf);
    }
}