android - public void implementation does not work in fragment -


i running asynctask in main activity , result of string vector. want use vector change list view in fragment. use interface (asyncresponce) vector public void (processfinish) , implemented asyncresponce in fragment , use clear , fill array adapter public void not work use logging statement understand if running don't see on device monitor.

i not know problem. important parts of main activity , asynctask:

asyncresponse myasync = new asyncresponse() {   public void processfinish(string output[]) {    } };  mainactivity.fetchweathertask weathertask =  new mainactivity.fetchweathertask(myasync); //mainactivity.fetchweathertask weathertask =  new mainactivity.fetchweathertask(); weathertask.execute("232931","82da4ddd2e8380be6dea06b177926b2d");

on post execute pass string vector on processfinish:

log.v(log_tag, "on post execute:+:  "+ resultstrs[1]); delegate.processfinish(resultstrs);

and fragment:

public class mainactivityfragment extends fragment implements mainactivity.asyncresponse {   public string[] weatherdata = new string[5];   public arrayadapter<string> mforecastadapter;   public final string log_tag_fragmet    =mainactivityfragment.class.getsimplename();    @override   public void  processfinish(string output[]) {     if (output!= null){       log.v(log_tag_fragmet, "this fragment="+ output[1]);       mforecastadapter.clear();     }   }

you should pass mainactivityfragment instance argument call new mainactivity.fetchweathertask(myasync);

the instance of asyncresponse passing has empty implementation processfinish(object[]), you're not calling mainactivityfragment

something maybe:

public class mainactivityfragment extends fragment implements mainactivity.asyncresponse { public string[] weatherdata = new string[5]; public arrayadapter<string> mforecastadapter; public final string log_tag_fragmet    =mainactivityfragment.class.getsimplename();  @override public void  processfinish(string output[]) {      if (output!= null){         log.v(log_tag_fragmet, "this fragment="+ output[1]);         mforecastadapter.clear();     } }  public void somemethod() {    mainactivity.fetchweathertask weathertask =  new  mainactivity.fetchweathertask(this);    weathertask.execute("232931","82da4ddd2e8380be6dea06b177926b2d"); }

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