Java tutorial
/* * RapidPro Android Channel - Relay SMS messages where MNO connections aren't practical. * Copyright (C) 2014 Nyaruka, UNICEF * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package io.rapidpro.androidchannel; import android.content.*; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.TextView; public class UnclaimedFragment extends Fragment { private ClaimCodeReceiver m_receiver; private TextView m_claimCode; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.unclaimed, container, false); } public void onActivityCreated(Bundle bundle) { super.onActivityCreated(bundle); m_claimCode = (TextView) getView().findViewById(R.id.claim_code); SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity()); String code = prefs.getString(SettingsActivity.RELAYER_CLAIM_CODE, "..."); setClaimCode(code); } public void onAttach(android.app.Activity activity) { super.onAttach(activity); m_receiver = new ClaimCodeReceiver(); IntentFilter filter = new IntentFilter(); filter.addAction(Intents.UPDATE_RELAYER_STATE); filter.addCategory(Intent.CATEGORY_DEFAULT); activity.registerReceiver(m_receiver, filter); } public void setClaimCode(String claimCode) { if (claimCode == null) { claimCode = "..."; } else if (claimCode.length() > 3) { claimCode = claimCode.substring(0, 3) + " " + claimCode.substring(3, 6) + " " + claimCode.substring(6, 9); } m_claimCode.setText(claimCode); } public void onDetach() { super.onDetach(); getActivity().unregisterReceiver(m_receiver); } class ClaimCodeReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { if (intent.getAction().equals(Intents.UPDATE_RELAYER_STATE) && intent.hasExtra(Intents.CLAIM_CODE_EXTRA)) { String claimCode = intent.getStringExtra(Intents.CLAIM_CODE_EXTRA); setClaimCode(claimCode); } } } }