private TextView mWebTitle;

private com.tencent.smtt.sdk.WebView mX5Web;

.........

if (mX5Web.canGoBack()) {            mX5Web.goBack();            com.tencent.smtt.sdk.WebBackForwardList list = mX5Web.copyBackForwardList();            com.tencent.smtt.sdk.WebHistoryItem item = list.getCurrentItem();            if (item != null) {                mWebTitle.setText(item.getTitle());            }        }