Java tutorial
/* * Kontalk Android client * Copyright (C) 2017 Kontalk Devteam <devteam@kontalk.org> * 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 org.kontalk.ui; import org.kontalk.R; import org.kontalk.service.msgcenter.MessageCenterService; import org.kontalk.util.Preferences; import android.app.Activity; import android.database.Cursor; import android.os.Bundle; import android.support.v4.app.ListFragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.CursorAdapter; import android.widget.EditText; import android.widget.ListView; import android.widget.SimpleCursorAdapter; /** * Status message fragment. * @author Daniele Ricci */ public class StatusFragment extends ListFragment implements View.OnClickListener { private EditText mStatus; private CursorAdapter mAdapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mAdapter = new SimpleCursorAdapter(getActivity(), android.R.layout.simple_list_item_1, null, new String[] { "status" }, new int[] { android.R.id.text1 }); setListAdapter(mAdapter); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.status_fragment, container, false); mStatus = (EditText) view.findViewById(android.R.id.input); // TODO retrieve current status from server? mStatus.setText(Preferences.getStatusMessage()); view.findViewById(R.id.button_ok).setOnClickListener(this); view.findViewById(R.id.button_cancel).setOnClickListener(this); return view; } @Override public void onResume() { super.onResume(); // TODO async query Cursor c = Preferences.getRecentStatusMessages(getActivity()); mAdapter.changeCursor(c); } @Override public void onStop() { super.onStop(); if (mAdapter != null) mAdapter.changeCursor(null); } @Override public void onListItemClick(ListView l, View v, int position, long id) { Cursor c = (Cursor) mAdapter.getItem(position); // 0 = _id, 1 = status finish(c.getString(1)); } private void finish(String text) { Activity parent = getActivity(); if (parent != null) { if (text.trim().length() <= 0) text = text.trim(); Preferences.setStatusMessage(text); Preferences.addRecentStatusMessage(parent, text); // start the message center to push the status message MessageCenterService.updateStatus(parent); parent.finish(); } } public void onStatusOk() { String text = mStatus.getText().toString(); finish(text); } public void onStatusCancel() { getActivity().finish(); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.button_ok: onStatusOk(); break; case R.id.button_cancel: onStatusCancel(); break; } } }