Android 4.4在WebView的onReceivedError中给出了ERR_CACHE_MISS错误

I have a webview in my Layout. By default, a search form is opened in it. On search, a listing section appears below the search form. If any link in the list is clicked, the details page opened. Now I want to controlled the back navigation for the webview. I placed this code in Activity.I have a webview in my Layout. By default, a se