Java tutorial
/* * WiFiAnalyzer * Copyright (C) 2017 VREM Software Development <VREMSoftwareDevelopment@gmail.com> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/> */ package com.vrem.wifianalyzer.wifi.accesspoint; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.widget.SwipeRefreshLayout; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ExpandableListView; import com.vrem.wifianalyzer.MainContext; import com.vrem.wifianalyzer.R; import com.vrem.wifianalyzer.wifi.scanner.Scanner; public class AccessPointsFragment extends Fragment { private SwipeRefreshLayout swipeRefreshLayout; private AccessPointsAdapter accessPointsAdapter; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { FragmentActivity activity = getActivity(); View view = inflater.inflate(R.layout.access_points_content, container, false); swipeRefreshLayout = (SwipeRefreshLayout) view.findViewById(R.id.accessPointsRefresh); swipeRefreshLayout.setOnRefreshListener(new ListViewOnRefreshListener()); accessPointsAdapter = new AccessPointsAdapter(activity); ExpandableListView expandableListView = (ExpandableListView) view.findViewById(R.id.accessPointsView); expandableListView.setAdapter(accessPointsAdapter); accessPointsAdapter.setExpandableListView(expandableListView); Scanner scanner = MainContext.INSTANCE.getScanner(); scanner.register(accessPointsAdapter); return view; } private void refresh() { swipeRefreshLayout.setRefreshing(true); Scanner scanner = MainContext.INSTANCE.getScanner(); scanner.update(); swipeRefreshLayout.setRefreshing(false); } @Override public void onResume() { super.onResume(); refresh(); } @Override public void onDestroy() { Scanner scanner = MainContext.INSTANCE.getScanner(); scanner.unregister(accessPointsAdapter); super.onDestroy(); } AccessPointsAdapter getAccessPointsAdapter() { return accessPointsAdapter; } private class ListViewOnRefreshListener implements SwipeRefreshLayout.OnRefreshListener { @Override public void onRefresh() { refresh(); } } }