setStatusHintContent重载一个, 参数 hint 支持CharSequence的.
private void setStatusHintContent(View view, CharSequence hint) {
checkNull(view, "Target view is null.");
TextView hintView = view.findViewById(R.id.status_hint_content);
if (null != hintView) {
hintView.setText(hint);
} else {
throw new NullPointerException("Not find the view ID status_hint_content");