cordova - Cordovawebview sendjavascript is not working -

my problem cordova sendjavascript deprecated , not working.

if (gecb != null && gwebview != null) {         //gwebview.loadurl("alert('nmk');");         //gwebview.sendjavascript(_d);         //gwebview.loadurl(_d);         // pluginresult dataresult = new         // pluginresult(pluginresult.status.ok, _d);         // callbackcontext.sendpluginresult(dataresult);         // gwebview.sendpluginresult(dataresult, _d);         gwebview.sendjavascript("javascript:callbackfunction()");         gwebview.sendjavascript("alert('nmk');");     }  function callbackfunction(){         alert();     } 

its show alert "nmk",not working callbackfunction().

and cordovawebview.loadurl not working me. don't know happening other way do. please me.