短信中加入表情
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/** * 来自博客：http://gundumw100.iteye.com/blog/904107 * 用这种方式显示短信中的图片！！！ * * */public class SmileyParser { private Context mContext; private String[] mSmileyTexts; private Pattern mPattern; private HashMap<String, Integer> mSmileyToRes; public static final int[] DEFAULT_SMILEY_RES_IDS = { R.drawable.face1, R.drawable.face2, R.drawable.face3, R.drawable.face4, R.drawable.face5, R.drawable.face6, R.drawable.face7, R.drawable.face8, R.drawable.face9, R.drawable.face10, R.drawable.face11, R.drawable.face12, R.drawable.face13, R.drawable.face14, R.drawable.face15, R.drawable.face16, R.drawable.face17, R.drawable.face18, }; public SmileyParser(Context context) { mContext = context; mSmileyTexts = mContext.getResources().getStringArray(DEFAULT_SMILEY_TEXTS); mSmileyToRes = buildSmileyToRes(); mPattern = buildPattern(); } public static final int DEFAULT_SMILEY_TEXTS = R.array.default_smiley_texts; private HashMap<String, Integer> buildSmileyToRes() { if (DEFAULT_SMILEY_RES_IDS.length != mSmileyTexts.length) {// Log.w("SmileyParser", "Smiley resource ID/text mismatch"); //表情的数量需要和数组定义的长度一致！ throw new IllegalStateException("Smiley resource ID/text mismatch"); } HashMap<String, Integer> smileyToRes = new HashMap<String, Integer>(mSmileyTexts.length); for (int i = 0; i < mSmileyTexts.length; i++) { smileyToRes.put(mSmileyTexts[i], DEFAULT_SMILEY_RES_IDS[i]); } return smileyToRes; } //构建正则表达式 private Pattern buildPattern() { StringBuilder patternString = new StringBuilder(mSmileyTexts.length * 3); patternString.append('('); for (String s : mSmileyTexts) { patternString.append(Pattern.quote(s)); patternString.append('|'); } patternString.replace(patternString.length() - 1, patternString.length(), ")"); return Pattern.compile(patternString.toString()); } //根据文本替换成图片 public CharSequence replace(CharSequence text) { SpannableStringBuilder builder = new SpannableStringBuilder(text); Matcher matcher = mPattern.matcher(text); while (matcher.find()) { int resId = mSmileyToRes.get(matcher.group()); builder.setSpan(new ImageSpan(mContext, resId),matcher.start(), matcher.end(),Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); } return builder; }}??
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