public  class MyFilter implements InputFilter {

        @Override
        public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
//            if(TextUtils.isEmpty(source)){
//                return source;
//            }
//            SpannableString result =  KWIMEmjSpanStringUtils.getEmotionContentSync(KWImInputBar.this.mSenceType, editContent.getContext(), editContent,source.toString());
//            return result;
            return source;
        }
    }

retund 的時候不要改變souce的實際型別，否則會導致輸入法的異常雙字，下劃線失效的記錄