java - AsyncTask not updating UI after doInBackground finishes -

-

i'm trying make simple app that's looks wifi networks, , connects them. i'm having problem updating ui.

a few pointers great. thank time.

class uiupdater extends asynctask<void, void, list<scanresult>> {      @override     protected void onpreexecute() {         super.onpreexecute();          textview searching = (textview) findviewbyid(r.id.searching);         searching.settext("currently searching...");     }      @override     protected list<scanresult> doinbackground(void... params) {         wifimanager manager = (wifimanager) client.this.getsystemservice(context.wifi_service);          if (!manager.iswifienabled())             manager.setwifienabled(true);          return manager.getscanresults();     }      @override     protected void onpostexecute(list<scanresult> items) {         super.onpostexecute(items);          arraylist<items> wifi = new arraylist<>();          (scanresult s : items)             wifi.add(new items(s.ssid, s.capabilities));          ///textview searching = (textview) findviewbyid(r.id.searching);         ///searching.settext("");          listview list = (listview) findviewbyid(r.id.list);         explorer adapter = new explorer(client.this, r.layout.listview_item_row, wifi);          list.setadapter(adapter);          clicklistener(list, wifi);     }  }

please use toast message or logcat or breakpoint check onpost execute being called or not


Comments

Post a Comment

Popular posts from this blog

how to insert data php javascript mysql with multiple array session 2 -

-
i have method method discussed , successful data entered 1 when more 1 can not database this programs my php form : <form class="form-horizontal" id="form-produk"> <div class="control-group" > <label class="control-label" for="kelas">kategori</label> <div class="controls"> <select class='form-control' name='id_kategori'> <?php $tampil=mysql_query("select * kategori order nama_kategori"); if ($id_kat==0){ echo "<option value=0 selected>- pilih kategori -</option>"; } while($w=mysql_fetch_array($tampil)){ if ($id_kat==$w[id_kategori]){ echo "<option value=$w[id_kategori] selected>$w[nama_kategori]</option>"; } else{ echo "<option value=$w[id_kategori]>$...
Read more

React Native allow user to reorder elements in a scrollview list -

-
i'm trying let user reorder elements in scrollview list long-pressing on 1 of elements. we're trying let user use long press pick element of scrollview list, , put element somewhere else in list. have working using animated view, issue it's difficult integrate scrolling , swipe-to-delete animated view. we're hoping add "pick , reorder" scrollview. is there preferred method accomplishing this? touchablewithoutfeedback has onlongpress method, can implement this: _onlongpress() { // perform sort }, <touchablewithoutfeedback onlongpress={ () => this._onlongpress() }> <text>click , hold call onlongpress</text> </touchablewithoutfeedback> as far sorting, can use type of library such lodash or underscore, plus there ways sort using vanilla javascript. check out this thread. i've set basic project using sort function on listview here . https://rnplay.org/apps/mpbktg 'use strict'; var react = requ...
Read more

multithreading - Exception in Application constructor -

-
i wanna write snake game javafx , there exception don't know , want know how fix it. ( know it's not complete yet ) and want know , class extends application ( start override ) main in other programs? see , here not static void main bc didn't need, if want add main shoud do? it's exeption... exception in application constructor exception in thread "main" java.lang.nosuchmethodexception: main_snake.main([ljava.lang.string;) @ java.lang.class.getmethod(class.java:1819) @ com.intellij.rt.execution.application.appmain.main(appmain.java:125) and code : import javafx.animation.animationtimer; import javafx.application.application; import javafx.event.eventhandler; import javafx.scene.scene; import javafx.scene.canvas.canvas; import javafx.scene.canvas.graphicscontext; import javafx.scene.input.keyevent; import javafx.scene.layout.borderpane; import javafx.scene.paint.color; import javafx.stage.stage; import java.util.arraylist; /** * creat...
Read more