android - android编程中如何将EditText中的特殊字改成特殊颜色？

Question

如何在Android编程中将EditText的特殊文字更改为我选择的颜色？

例如:蓝色字在书写时变为蓝色；或 HTML 字为绿色。怎么做？

Answer 1

使用SpannableStringBuilder可以改变EditText或TextView的部分文字颜色

String text = "Hello blue word";
String specialWord = "blue";
int specialWordIndex= text.indexOf(specialWord);

SpannableStringBuilder sb = new SpannableStringBuilder(text);
// Span to set text color to blue (or any color)
ForegroundColorSpan fcs = new ForegroundColorSpan(Color.BLUE);    
// Set text color from specialWord first index to specialWord last index
sb.setSpan(fcs, specialWordIndex, specialWordIndex+ specialWord.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);

yourEditText.setText(sb);