FaceTextUtils.java

package com.diandi.demo.util;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.TextUtils;
import android.text.style.ImageSpan;

import com.diandi.demo.model.diandi.FaceText;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * *******************************************************************************
 * *********    Author : klob(kloblic@gmail.com) .
 * *********    Date : 2014-11-29  .
 * *********    Time : 11:46 .
 * *********    Project name : Diandi1.18 .
 * *********    Version : 1.0
 * *********    Copyright @ 2014, klob, All Rights Reserved
 * *******************************************************************************
 */
public class FaceTextUtils {

    public static List<FaceText> faceTexts = new ArrayList<FaceText>();

    static {
        faceTexts.add(new FaceText("\\ue056"));
        faceTexts.add(new FaceText("\\ue057"));
        faceTexts.add(new FaceText("\\ue058"));
        faceTexts.add(new FaceText("\\ue059"));
        faceTexts.add(new FaceText("\\ue105"));
        faceTexts.add(new FaceText("\\ue106"));
        faceTexts.add(new FaceText("\\ue107"));
        faceTexts.add(new FaceText("\\ue108"));
        faceTexts.add(new FaceText("\\ue401"));
        faceTexts.add(new FaceText("\\ue402"));
        faceTexts.add(new FaceText("\\ue403"));
        faceTexts.add(new FaceText("\\ue404"));
        faceTexts.add(new FaceText("\\ue405"));
        faceTexts.add(new FaceText("\\ue406"));
        faceTexts.add(new FaceText("\\ue407"));
        faceTexts.add(new FaceText("\\ue408"));
        faceTexts.add(new FaceText("\\ue409"));
        faceTexts.add(new FaceText("\\ue40a"));
        faceTexts.add(new FaceText("\\ue40b"));
        faceTexts.add(new FaceText("\\ue40d"));
        faceTexts.add(new FaceText("\\ue40e"));
        faceTexts.add(new FaceText("\\ue40f"));
        faceTexts.add(new FaceText("\\ue410"));
        faceTexts.add(new FaceText("\\ue411"));
        faceTexts.add(new FaceText("\\ue412"));
        faceTexts.add(new FaceText("\\ue413"));
        faceTexts.add(new FaceText("\\ue414"));
        faceTexts.add(new FaceText("\\ue415"));
        faceTexts.add(new FaceText("\\ue416"));
        faceTexts.add(new FaceText("\\ue417"));
        faceTexts.add(new FaceText("\\ue418"));
        faceTexts.add(new FaceText("\\ue41f"));
        faceTexts.add(new FaceText("\\ue00e"));
        faceTexts.add(new FaceText("\\ue421"));
    }

    public static String parse(String s) {
        for (FaceText faceText : faceTexts) {
            s = s.replace("\\" + faceText.text, faceText.text);
            s = s.replace(faceText.text, "\\" + faceText.text);
        }
        return s;
    }

    /**
     * toSpannableString
     *
     * @return SpannableString
     * @throws
     */
    public static SpannableString toSpannableString(Context context, String text) {
        if (!TextUtils.isEmpty(text)) {
            SpannableString spannableString = new SpannableString(text);
            int start = 0;
            Pattern pattern = Pattern.compile("\\\\ue[a-z0-9]{3}", Pattern.CASE_INSENSITIVE);
            Matcher matcher = pattern.matcher(text);
            while (matcher.find()) {
                String faceText = matcher.group();
                String key = faceText.substring(1);
                BitmapFactory.Options options = new BitmapFactory.Options();
                Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(),
                        context.getResources().getIdentifier(key, "drawable", context.getPackageName()), options);
                ImageSpan imageSpan = new ImageSpan(context, bitmap);
                int startIndex = text.indexOf(faceText, start);
                int endIndex = startIndex + faceText.length();
                if (startIndex >= 0)
                    spannableString.setSpan(imageSpan, startIndex, endIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                start = (endIndex - 1);
            }

            return spannableString;
        } else {
            return new SpannableString("");
        }
    }

    public static SpannableString toSpannableString(Context context, String text, SpannableString spannableString) {

        int start = 0;
        Pattern pattern = Pattern.compile("\\\\ue[a-z0-9]{3}", Pattern.CASE_INSENSITIVE);
        Matcher matcher = pattern.matcher(text);
        while (matcher.find()) {
            String faceText = matcher.group();
            String key = faceText.substring(1);
            BitmapFactory.Options options = new BitmapFactory.Options();
//			options.inSampleSize = 2;
            Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), context.getResources()
                    .getIdentifier(key, "drawable", context.getPackageName()), options);
            ImageSpan imageSpan = new ImageSpan(context, bitmap);
            int startIndex = text.indexOf(faceText, start);
            int endIndex = startIndex + faceText.length();
            if (startIndex >= 0)
                spannableString.setSpan(imageSpan, startIndex, endIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
            start = (endIndex - 1);
        }

        return spannableString;
    }

}