android 顯示表情 (一)

一般的解決方案是，形如：

     character=/:)

     file=2.gif

這樣的設定檔。

那麼可以把圖片和Emoji的對應關係儲存在一個有序的LinkedHashMap中去。

用SpannableString來處理這種字串

//解析訊息內容SpannableString icontent = new SpannableString(content);

處理icontent的代碼如下：

    public SpannableString parseContent(SpannableString icontent, String content)        throws Exception{        HashMap<String, String> map = BootApp.getImageMap();        String str[] = content.split("/");        String key = null;        String newKey = null;        int length = 0;        for (int i = 0; i < str.length; i++){            key = str[i];            int keyLength = 0;            if(!StringUtils.isEmpty(key)){                keyLength = key.length();            }            if (1 == keyLength){                if (map.containsKey(key))                {                    newKey = key;                }            }            else{                if(!StringUtils.isEmpty(key)){                    for (int j = 1; j < key.length() + 1; j++)                    {                        String s = ("/" + key.substring(0, j)).toString();                        if (map.containsKey(s))                        {                            newKey = key.substring(0, j);                            break;                        }                    }}}            if (newKey != null){                String imageId = BootApp.getImageMap().get("/" + newKey);                Field field = R.drawable.class.getDeclaredField(imageId);                int resourceId = Integer.parseInt(field.get(null).toString());                Bitmap bitmap = BitmapFactory.decodeResource(Global.getContext().getResources(), resourceId);                ImageSpan imageSpan = new ImageSpan(Global.getContext(), bitmap);                icontent.setSpan(imageSpan,                    length,                    newKey.length()+length+1,                    Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);                length+=keyLength+1;            }            else{                length+=keyLength;            }}        return icontent;}

返回一個已經把字串和圖片夾雜在一起的SpannableString字串setText給一個用於顯示的TextView