SpannableString其实和String一样,都是一种字符串类型,同样TextView也可以直接设置SpannableString作为显示文本。不同的是SpannableString可以通过使用其方法setSpan方法实现字符串各种形式风格的显示,重要的是可以指定设置的区间,也就是为字符串指定下标区间内的子字符串设置格式。
实现方法如下:
- 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);
实现方法如下:
- 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);
实现方法如下:
- 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);
- 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);
- textView.setText(spannableString);
实现方法如下:
- 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);
实现方法如下:
- 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);
实现方法如下:
- 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);
实现方法如下:
- 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);