package com.tejia.lijin.app.util;
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import android.content.Context;
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import android.graphics.Color;
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import androidx.core.content.ContextCompat;
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import android.text.Html;
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import android.text.Spannable;
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import android.text.SpannableString;
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import android.text.SpannableStringBuilder;
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import android.text.Spanned;
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import android.text.TextUtils;
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import android.text.style.CharacterStyle;
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import android.text.style.ForegroundColorSpan;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* 文字变色工具类
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*/
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public class wordUtil {
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/**
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* 关键字高亮变色
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*
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* @param context 上下文
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* @param color 变化的色值
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* @param text 文字
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* @param keyword 文字中的关键字
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* @return 结果SpannableString
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*/
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public static SpannableString matcherSearchTitle(Context context, int color, String text, String keyword) {
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SpannableString s = new SpannableString(text);
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keyword = escapeExprSpecialWord(keyword);
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text = escapeExprSpecialWord(text);
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if (text.contains(keyword) && !TextUtils.isEmpty(keyword)) {
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try {
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Pattern p = Pattern.compile(keyword);
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Matcher m = p.matcher(s);
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while (m.find()) {
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int start = m.start();
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int end = m.end();
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//注意：请使用ContextCompat.getColor获取颜色值。
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s.setSpan(new ForegroundColorSpan(ContextCompat.getColor(context, color)), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
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}
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} catch (Exception e) {
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// Log.e("错误：", e.toString());
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}
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}
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return s;
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}
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/**
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* 关键字高亮显示
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*
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* @param text 文字
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* @param keyword1 文字中的关键字数组
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* @return
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*/
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public static SpannableStringBuilder matcherSearchContent(String text, String[] keyword1) {
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String[] keyword = new String[keyword1.length];
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System.arraycopy(keyword1, 0, keyword, 0, keyword1.length);
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SpannableStringBuilder spannable = new SpannableStringBuilder(text);
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CharacterStyle span;
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String wordReg;
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for (int i = 0; i < keyword.length; i++) {
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String key = "";
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// 处理通配符问题
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if (keyword[i].contains("*") || keyword[i].contains("(") || keyword[i].contains(")")) {
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char[] chars = keyword[i].toCharArray();
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for (int k = 0; k < chars.length; k++) {
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if (chars[k] == '*' || chars[k] == '(' || chars[k] == ')') {
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key = key + "\\" + String.valueOf(chars[k]);
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} else {
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key = key + String.valueOf(chars[k]);
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}
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}
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keyword[i] = key;
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}
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wordReg = "(?i)" + keyword[i]; //忽略字母大小写
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Pattern pattern = Pattern.compile(wordReg);
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Matcher matcher = pattern.matcher(text);
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while (matcher.find()) {
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span = new ForegroundColorSpan(Color.parseColor("#ff666666"));
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spannable.setSpan(span, matcher.start(), matcher.end(), Spannable.SPAN_MARK_MARK);
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}
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}
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return spannable;
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}
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/**
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* 转义正则特殊字符 （$()*+.[]?\^{},|）
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*
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* @param keyword
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* @return keyword
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*/
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public static String escapeExprSpecialWord(String keyword) {
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if (!TextUtils.isEmpty(keyword)) {
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String[] fbsArr = {"\\", "$", "(", ")", "*", "+", ".", "[", "]", "?", "^", "{", "}", "|"};
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for (String key : fbsArr) {
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if (keyword.contains(key)) {
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keyword = keyword.replace(key, "\\" + key);
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}
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}
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}
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return keyword;
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}
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/**
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* 通过Html.fromHtml方式修改颜色(解决SDK版本问题)
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*
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* @param html
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* @return
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*/
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public static Spanned fromHtml(String html) {
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Spanned result;
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if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
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result = Html.fromHtml(html, Html.FROM_HTML_MODE_LEGACY);
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} else {
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result = Html.fromHtml(html);
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}
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return result;
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}
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/**
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* 字体颜色修改
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*
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* @param content
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* @param color
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* @return
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*/
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public static String color(String content, int color) {
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return "<font color=\"#" + Integer.toHexString(color) + "\" >" + content + "</font>";
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}
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/**
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* 加粗字体
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*
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* @param content
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* @return
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*/
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public static String bold(String content) {
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return "<b>" + content + "</b>";
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}
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}
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