Android 设置字体加粗 斜体 中划线（删除线）下划线 上标 下标 文字表情等

ForegroundColorSpan，为文本设置部分颜色

/*** 设置部分字体颜色*/public void setTextColor(){SpannableString spannableString = new SpannableString(tvSpan.getText().toString().trim());ForegroundColorSpan colorSpan = new ForegroundColorSpan(Color.parseColor("#0099EE"));spannableString.setSpan(colorSpan,5,spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);tvSpan.setText(spannableString);}

/*** 设置部分字体背景色*/public void setBackgroundColorSpan(){SpannableString spannableString = new SpannableString(tvSpan.getText().toString().trim());BackgroundColorSpan colorSpan = new BackgroundColorSpan(Color.parseColor("#AC00FF30"));spannableString.setSpan(colorSpan,5,spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);tvSpan.setText(spannableString);}

/*** 设置文字相对大小*/public void setRelativeSizeSpan(){SpannableString spannableString = new SpannableString(tvSpan.getText().toString().trim());RelativeSizeSpan sizeSpan1 = new RelativeSizeSpan(1.2f);RelativeSizeSpan sizeSpan2 = new RelativeSizeSpan(1.4f);RelativeSizeSpan sizeSpan3 = new RelativeSizeSpan(1.6f);RelativeSizeSpan sizeSpan4 = new RelativeSizeSpan(1.8f);RelativeSizeSpan sizeSpan5 = new RelativeSizeSpan(1.6f);RelativeSizeSpan sizeSpan6 = new RelativeSizeSpan(1.4f);RelativeSizeSpan sizeSpan7 = new RelativeSizeSpan(1.2f);RelativeSizeSpan sizeSpan8 = new RelativeSizeSpan(1.0f);RelativeSizeSpan sizeSpan9 = new RelativeSizeSpan(0.8f);spannableString.setSpan(sizeSpan1,0,1, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);spannableString.setSpan(sizeSpan2,1,2, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);spannableString.setSpan(sizeSpan3,2,3, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);spannableString.setSpan(sizeSpan4,3,4, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);spannableString.setSpan(sizeSpan5,4,5, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);spannableString.setSpan(sizeSpan6,5,6, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);spannableString.setSpan(sizeSpan7,6,7, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);spannableString.setSpan(sizeSpan8,7,8, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);spannableString.setSpan(sizeSpan9,8,9, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);tvSpan.setText(spannableString);}

/*** 为文本设置中划线，也就是常说的删除线*/private void setStrikethroughSpan(){SpannableString spannableString = new SpannableString(tvSpan.getText().toString().trim());StrikethroughSpan colorSpan = new StrikethroughSpan();spannableString.setSpan(colorSpan,5,spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);tvSpan.setText(spannableString);}

/*** 为文本设置下划线，具体实现方法*/private void setUnderlineSpan(){SpannableString spannableString = new SpannableString(tvSpan.getText().toString().trim());UnderlineSpan colorSpan = new UnderlineSpan();spannableString.setSpan(colorSpan,5,spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);tvSpan.setText(spannableString);}

/*** 为文字设置风格（粗体、斜体）*/private void setStyleSpan(){SpannableString spannableString = new SpannableString("这是粗体，这是斜体");StyleSpan colorSpan = new StyleSpan(Typeface.BOLD);StyleSpan colorSpanit = new StyleSpan(Typeface.ITALIC);spannableString.setSpan(colorSpan,3,5, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);spannableString.setSpan(colorSpanit,7,spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);tvSpan.setHighlightColor(Color.parseColor("#36969696"));tvSpan.setText(spannableString);}

/*** 设置文本中添加图片表情*/public void setImageSpan(){SpannableString spannableString = new SpannableString("这是粗体，这是斜体");Drawable drawable = getResources().getDrawable(R.mipmap.ic_launcher);drawable.setBounds(0,0,42,42);ImageSpan imageSpan=new ImageSpan(drawable);spannableString.setSpan(imageSpan,5,spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);tvSpan.setText(spannableString);}