java - 单个TextView中的多个TypeFace

我想将TextView上的第一个字符设置为TypeFace，将第二个字符设置为不同的Type字体，依此类推。
我读了这个例子:

Spannable str = (Spannable) textView.getText();
str.setSpan(new StyleSpan(android.graphics.Typeface.ITALIC), 0, 7
                             ,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

但这对我没有帮助，因为我想设置多个TypeFace (external TTFs)任何想法？？

最佳答案

使用以下代码:(我使用的是Bangla和Tamil字体)

  TextView txt = (TextView) findViewById(R.id.custom_fonts);
        txt.setTextSize(30);
        Typeface font = Typeface.createFromAsset(getAssets(), "Akshar.ttf");
        Typeface font2 = Typeface.createFromAsset(getAssets(), "bangla.ttf");
        SpannableStringBuilder SS = new SpannableStringBuilder("আমারநல்வரவு");
        SS.setSpan (new CustomTypefaceSpan("", font2), 0, 4,Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
        SS.setSpan (new CustomTypefaceSpan("", font), 4, 11,Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
        txt.setText(SS);

结果是:



这使用了从How can I use TypefaceSpan or StyleSpan with a custom Typeface?提取的CustomTypefaceSpan类:

package my.app;
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);
}
}