将不同大小的字符串/文本应用于TextView

Question

我有一个文本'$ 170.00',我想将此文本应用于TextView,如图所示.怎么可能.?? 任何建议将不胜感激.提前致谢.

Answer 1

1)SpannableString从原始文本创建一个

SpannableString string = new SpannableString(originalText)

2)为符号设置a SuperscriptSpan和aRelativeSizeSpan$

string.setSpan(new SuperscriptSpan(), 0, 1, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
string.setSpan(new RelativeSizeSpan((0.5f), 0, 1, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

3)单独保留整数部分.

4)获取小数部分的索引并对其应用a SuperscriptSpan和a RelativeSizeSpan.

string.setSpan(new SuperscriptSpan(), originalText.lenght - 2, originalText.lenght - 1, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
string.setSpan(new RelativeSizeSpan((0.5f),  originalText.lenght - 2, originalText.lenght - 1, Spannable.SPAN_INCLUSIVE_INCLUSIVE);

5)适用SpannableString于TextView

textView.setText(string);