如何将TypefaceSpan或StyleSpan与自定义字体一起使用？

Z时代
2024-01-10
分类：问答

我还没有找到一种方法来做到这一点。可能吗？

回答：

好吧，我无法弄清楚如何使用可用的类，因此TypefaceSpan我自己扩展了它，现在它对我有用。这是我所做的：

package de.myproject.text.style;
import android.graphics.Paint;
import android.graphics.Typeface;
import android.text.TextPaint;
import android.text.style.TypefaceSpan;
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);
    }
}