【Android开发】富文本

SpannableString spannableString = new SpannableString("设置文字的前景色为淡蓝色");
ForegroundColorSpan colorSpan = new ForegroundColorSpan(Color.parseColor("#0099EE"));
spannableString.setSpan(colorSpan, 9, spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

SpannableString spannableString = new SpannableString("设置文字的背景色为淡绿色");
BackgroundColorSpan colorSpan = new BackgroundColorSpan(Color.parseColor("#AC00FF30"));
spannableString.setSpan(colorSpan, 9, spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

SpannableString spannableString = new SpannableString("万丈高楼平地起");

RelativeSizeSpan sizeSpan01 = new RelativeSizeSpan(1.2f);
RelativeSizeSpan sizeSpan02 = new RelativeSizeSpan(1.4f);
RelativeSizeSpan sizeSpan03 = new RelativeSizeSpan(1.6f);
RelativeSizeSpan sizeSpan04 = new RelativeSizeSpan(1.8f);
RelativeSizeSpan sizeSpan05 = new RelativeSizeSpan(1.6f);
RelativeSizeSpan sizeSpan06 = new RelativeSizeSpan(1.4f);
RelativeSizeSpan sizeSpan07 = new RelativeSizeSpan(1.2f);

spannableString.setSpan(sizeSpan01, 0, 1, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
spannableString.setSpan(sizeSpan02, 1, 2, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
spannableString.setSpan(sizeSpan03, 2, 3, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
spannableString.setSpan(sizeSpan04, 3, 4, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
spannableString.setSpan(sizeSpan05, 4, 5, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
spannableString.setSpan(sizeSpan06, 5, 6, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
spannableString.setSpan(sizeSpan07, 6, 7, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

SpannableString spannableString = new SpannableString("为文字设置删除线");
StrikethroughSpan strikethroughSpan = new StrikethroughSpan();
spannableString.setSpan(strikethroughSpan, 5, spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

SpannableString spannableString = new SpannableString("为文字设置下划线");
UnderlineSpan underlineSpan = new UnderlineSpan();
spannableString.setSpan(underlineSpan, 5, spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

SpannableString spannableString = new SpannableString("为文字设置上标");
SuperscriptSpan superscriptSpan = new SuperscriptSpan();
spannableString.setSpan(superscriptSpan, 5, spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

SpannableString spannableString = new SpannableString("为文字设置下标");
SubscriptSpan subscriptSpan = new SubscriptSpan();
spannableString.setSpan(subscriptSpan, 5, spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

SpannableString spannableString = new SpannableString("为文字设置粗体、斜体风格");
StyleSpan styleSpan_B  = new StyleSpan(Typeface.BOLD);
StyleSpan styleSpan_I  = new StyleSpan(Typeface.ITALIC);
spannableString.setSpan(styleSpan_B, 5, 7, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
spannableString.setSpan(styleSpan_I, 8, 10, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setHighlightColor(Color.parseColor("#36969696"));
textView.setText(spannableString);

SpannableString spannableString = new SpannableString("在文本中添加表情（表情）");
Drawable drawable = getResources().getDrawable(R.mipmap.a9c);
drawable.setBounds(0, 0, 42, 42);
ImageSpan imageSpan = new ImageSpan(drawable);
spannableString.setSpan(imageSpan, 6, 8, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setText(spannableString);

SpannableString spannableString = new SpannableString("为文字设置超链接");
URLSpan urlSpan = new URLSpan("http://www.jianshu.com/users/dbae9ac95c78");
spannableString.setSpan(urlSpan, 5, spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
textView.setMovementMethod(LinkMovementMethod.getInstance());
textView.setHighlightColor(Color.parseColor("#36969696"));
textView.setText(spannableString);

摘自：https://www.cnblogs.com/qynprime/p/8026672.html