java - Android must implement the inherited abstract method -

i have downloaded project function works well, when coppied function project, errors :

the type new asynchttpresponsehandler(){} must implement inherited abstract method asynchttpresponsehandler.onsuccess(int, header[], byte[])

the method onsuccess(string) of type new asynchttpresponsehandler(){} must override or implement supertype method

the method onfailure(int, throwable, string) of type new asynchttpresponsehandler(){} must override or implement supertype method

i tried tips this question nothing helped. possible solution ?

public void syncsqlitemysqldb(){     //create asychttpclient object     asynchttpclient client = new asynchttpclient();     requestparams params = new requestparams();     arraylist<hashmap<string, string>> userlist =  controller.getallusers();     if(userlist.size()!=0){         if(controller.dbsynccount() != 0){             prgdialog.show();             params.put("usersjson", controller.composejsonfromsqlite());             client.post("http://techkeg.tk/sqlitemysqlsync/insertuser.php",params ,new asynchttpresponsehandler() {                 @override                 public void onsuccess(string response) {                     system.out.println(response);                     prgdialog.hide();                     try {                         jsonarray arr = new jsonarray(response);                         system.out.println(arr.length());                         for(int i=0; i<arr.length();i++){                             jsonobject obj = (jsonobject)arr.get(i);                             system.out.println(obj.get("id"));                             system.out.println(obj.get("status"));                             controller.updatesyncstatus(obj.get("id").tostring(),obj.get("status").tostring());                         }                         toast.maketext(getapplicationcontext(), "db sync completed!", toast.length_long).show();                     } catch (jsonexception e) {                         toast.maketext(getapplicationcontext(), "error occured [server's json response might invalid]!", toast.length_long).show();                         e.printstacktrace();                     }                 }                  @override                 public void onfailure(int statuscode, throwable error, string content) {                     prgdialog.hide();                     if(statuscode == 404){                         toast.maketext(getapplicationcontext(), "requested resource not found", toast.length_long).show();                     }else if(statuscode == 500){                         toast.maketext(getapplicationcontext(), "something went wrong @ server end", toast.length_long).show();                     }else{                         toast.maketext(getapplicationcontext(), "unexpected error occcured! [most common error: device might not connected internet]", toast.length_long).show();                     }                 }             });         }else{             toast.maketext(getapplicationcontext(), "sqlite , remote mysql dbs in sync!", toast.length_long).show();         }     }else{             toast.maketext(getapplicationcontext(), "no data in sqlite db, please enter user name perform sync action", toast.length_long).show();     } } 

you cannot make new signature overriden methods, according error , api methods must have same signature super class/interface:

check jls (§8.4.2)

it follows compile-time error if [...] method signature override-equivalent [...] has different return type or incompatible throws clause.

in case signatures must be:

public void onsuccess(int statuscode, header[] headers, byte[] responsebody) {      // got response  }  public void onfailure(int statuscode, header[] headers, byte[] responsebody, throwable error) {      // response failed :( } 

not:

public void onsuccess(string response) { public void onfailure(int statuscode, throwable error, string content) { 

resuming.... declare methods described above , in asynchttpresponsehandler api , addapt them achieve needs.