RTEditor/src/main/java/com/onegravity/rteditor/RTEditText.java
private void addSpanWatcher() {
        Spannable spannable = getText();
        if (spannable.getSpans(0, spannable.length(), getClass()) != null) {
            spannable.setSpan(this, 0, spannable.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
        }
    }
private void addSpanWatcher() {
        Spannable spannable = getText();
        if (spannable.getSpans(0, spannable.length(), getClass()) != null) {
            spannable.setSpan(this, 0, spannable.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
        }
    }
Add a SpanWatcher for the Changeable implementation