java开发，匹配指定内容设置不同字体颜色

public static SpannableString matchSearchText(int color, String strSrcText, String strSearchText) {
if (mull=strSrcText ||strSrcText. equals("")) {
Log. i( “要呈现的内容 strSrcText为mull,return 空”);
return new SpannableString( " “);
if (null = strSearchText || strSearchText.equals(”")) {
Log.i(“要搜索的内容 strSearchText为null,return strSrcText”);
return new SpannableString(strSrcText);

SpannableString spannableString =new SpannableString(strSrcText);
try{
Pattern pattern =Pattern.compile(strSearchText, Pattern.CASE_INSENSITIVE |Pattern.LITERAL);
Matcher matcher = pattern.matcher(spannableString);
while (matcher.find()) {
int nStartPos = matcher.start () ;
int nEndPos = matcher.end();
spannableString. setSpan(new ForegroundColorSpan(color),nStartPos, nEndPos,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
} catch (PatternSyntaxException e){
Log.i( “搜索出现异常 e=” + e. toString());
return spannableString;