Java tutorial
/* * Copyright (C) 2013 - Gareth Llewellyn * * This file is part of Bowdlerize - https://bowdlerize.co.uk * * 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 uk.bowdlerize; import java.io.IOException; import java.util.ArrayList; import java.util.List; import java.util.Locale; import java.util.concurrent.atomic.AtomicInteger; import android.app.Activity; import android.app.ActionBar; import android.app.AlertDialog; import android.app.Fragment; import android.app.FragmentManager; import android.app.FragmentTransaction; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.os.AsyncTask; import android.provider.Settings; import android.support.v13.app.FragmentPagerAdapter; import android.os.Bundle; import android.support.v4.view.ViewPager; import android.telephony.TelephonyManager; import android.util.Log; import android.util.Pair; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.GooglePlayServicesUtil; import com.google.android.gms.gcm.GoogleCloudMessaging; import org.apache.http.HttpResponse; import org.apache.http.NameValuePair; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicNameValuePair; import org.apache.http.protocol.HTTP; import org.apache.http.util.EntityUtils; import org.json.JSONObject; import uk.bowdlerize.cache.LocalCache; import uk.bowdlerize.fragments.CheckConfigFragment; import uk.bowdlerize.fragments.OrgFragment; import uk.bowdlerize.fragments.StatsFragment; import uk.bowdlerize.fragments.WirelessConfigFragment; import uk.bowdlerize.service.CensorCensusService; import static uk.bowdlerize.support.Hashes.MD5; public class MainActivity extends Activity implements ActionBar.TabListener { /** * The {@link android.support.v4.view.PagerAdapter} that will provide * fragments for each of the sections. We use a * {@link FragmentPagerAdapter} derivative, which will keep every * loaded fragment in memory. If this becomes too memory intensive, it * may be best to switch to a * {@link android.support.v13.app.FragmentStatePagerAdapter}. */ SectionsPagerAdapter mSectionsPagerAdapter; public static final String EXTRA_MESSAGE = "message"; public static final String PROPERTY_REG_ID = "registration_id"; private static final String PROPERTY_APP_VERSION = "appVersion"; private final static int PLAY_SERVICES_RESOLUTION_REQUEST = 9000; String SENDER_ID = "974943648388"; static final String TAG = "MainActivity"; GoogleCloudMessaging gcm; AtomicInteger msgId = new AtomicInteger(); SharedPreferences prefs; Context context; boolean mExplicitSignOut = false; String regid; Boolean mSignedIn = false; /** * The {@link ViewPager} that will host the section contents. */ ViewPager mViewPager; private SharedPreferences settings = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); getActionBar().setTitle(getString(R.string.actionBarTitle)); getActionBar().setSubtitle(getString(R.string.actionBarSubtitle)); settings = getGCMPreferences(this); //Check if the user has agreed if (settings.getBoolean("agreed", false)) { onConfirmed(); } else { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setMessage(R.string.warningMessage).setTitle(R.string.warningTitle); builder.setPositiveButton(R.string.warningAgree, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { SharedPreferences.Editor editor = settings.edit(); editor.putBoolean("agreed", true); editor.commit(); dialog.dismiss(); Toast.makeText(MainActivity.this, getString(R.string.warningAgreed), Toast.LENGTH_SHORT).show(); configureTabs(); } }); builder.setNegativeButton(R.string.warningExit, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.dismiss(); finish(); } }); builder.show(); } } private void onConfirmed() { if (checkPlayServices()) { configureTabs(); gcm = GoogleCloudMessaging.getInstance(this); regid = getRegistrationId(context); if (regid.isEmpty()) { registerInBackground(); } else { Log.i(TAG, "regid:" + regid); sendRegistrationIdToBackend(); } } else { Log.i(TAG, "No valid Google Play Services APK found."); try { Toast.makeText(MainActivity.this, "Google Play Services is needed for this game", Toast.LENGTH_LONG) .show(); } catch (Exception e) { e.printStackTrace(); } finish(); } } private boolean checkPlayServices() { int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this); if (resultCode != ConnectionResult.SUCCESS) { if (GooglePlayServicesUtil.isUserRecoverableError(resultCode)) { GooglePlayServicesUtil.getErrorDialog(resultCode, this, PLAY_SERVICES_RESOLUTION_REQUEST).show(); } else { Log.i(TAG, "This device is not supported."); finish(); } return false; } return true; } private String getRegistrationId(Context context) { final SharedPreferences prefs = getGCMPreferences(context); String registrationId = prefs.getString(PROPERTY_REG_ID, ""); if (registrationId.isEmpty()) { Log.i(TAG, "Registration not found."); return ""; } // Check if app was updated; if so, it must clear the registration ID // since the existing regID is not guaranteed to work with the new // app version. int registeredVersion = prefs.getInt(PROPERTY_APP_VERSION, Integer.MIN_VALUE); int currentVersion = getAppVersion(context); if (registeredVersion != currentVersion) { Log.i(TAG, "App version changed."); return ""; } return registrationId; } private void registerInBackground() { new AsyncTask<Void, Void, String>() { @Override protected String doInBackground(Void... params) { String msg = ""; try { if (gcm == null) { gcm = GoogleCloudMessaging.getInstance(context); } regid = gcm.register(SENDER_ID); msg = "Device registered, registration ID=" + regid; // You should send the registration ID to your server over HTTP, // so it can use GCM/HTTP or CCS to send messages to your app. // The request to your server should be authenticated if your app // is using accounts. sendRegistrationIdToBackend(); // For this demo: we don't need to send it because the device // will send upstream messages to a server that echo back the // message using the 'from' address in the message. // Persist the regID - no need to register again. storeRegistrationId(context, regid); } catch (IOException ex) { msg = "Error :" + ex.getMessage(); // If there is an error, don't just keep trying to register. // Require the user to click a button again, or perform // exponential back-off. } return msg; } @Override protected void onPostExecute(String msg) { //mDisplay.append(msg + "\n"); } }.execute(null, null, null); } private void sendRegistrationIdToBackend() { new AsyncTask<Void, Void, Boolean>() { @Override protected Boolean doInBackground(Void... params) { DefaultHttpClient httpclient = new DefaultHttpClient(); JSONObject json; HttpPost httpost = new HttpPost("https://bowdlerize.co.uk/api/1/updategcm.php"); httpost.setHeader("Accept", "application/json"); List<NameValuePair> nvps = new ArrayList<NameValuePair>(); nvps.add(new BasicNameValuePair("gcmid", regid)); nvps.add(new BasicNameValuePair("deviceid", MD5(Settings.Secure.getString(getContentResolver(), Settings.Secure.ANDROID_ID)))); try { httpost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8)); HttpResponse response = httpclient.execute(httpost); String rawJSON = EntityUtils.toString(response.getEntity()); response.getEntity().consumeContent(); Log.e("rawJSON", rawJSON); json = new JSONObject(rawJSON); } catch (Exception e) { e.printStackTrace(); } return true; } @Override protected void onPostExecute(Boolean success) { //TODO if it fails we should reregister } }.execute(null, null, null); } private static int getAppVersion(Context context) { return 1; } private SharedPreferences getGCMPreferences(Context context) { return getSharedPreferences(MainActivity.class.getSimpleName(), Context.MODE_PRIVATE); } private void storeRegistrationId(Context context, String regId) { final SharedPreferences prefs = getGCMPreferences(context); int appVersion = getAppVersion(context); Log.i(TAG, "Saving regId on app version " + appVersion); Log.i(TAG, "regId" + regId); SharedPreferences.Editor editor = prefs.edit(); editor.putString(PROPERTY_REG_ID, regId); editor.putInt(PROPERTY_APP_VERSION, appVersion); editor.commit(); } private void configureTabs() { // Set up the action bar. final ActionBar actionBar = getActionBar(); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); // Create the adapter that will return a fragment for each of the three // primary sections of the activity. mSectionsPagerAdapter = new SectionsPagerAdapter(getFragmentManager()); // Set up the ViewPager with the sections adapter. mViewPager = (ViewPager) findViewById(R.id.pager); mViewPager.setAdapter(mSectionsPagerAdapter); // When swiping between different sections, select the corresponding // tab. We can also use ActionBar.Tab#select() to do this if we have // a reference to the Tab. mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() { @Override public void onPageSelected(int position) { actionBar.setSelectedNavigationItem(position); } }); // For each of the sections in the app, add a tab to the action bar. for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) { // Create a tab with text corresponding to the page title defined by // the adapter. Also specify this Activity object, which implements // the TabListener interface, as the callback (listener) for when // this tab is selected. actionBar .addTab(actionBar.newTab().setText(mSectionsPagerAdapter.getPageTitle(i)).setTabListener(this)); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. switch (item.getItemId()) { case R.id.action_add: { AlertDialog.Builder builder = new AlertDialog.Builder(this); // Get the layout inflater LayoutInflater inflater = getLayoutInflater(); View dialogView = inflater.inflate(R.layout.dialog_add_url, null); final EditText urlET = (EditText) dialogView.findViewById(R.id.urlET); builder.setView(dialogView) .setPositiveButton(R.string.action_add, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { Bundle extras = new Bundle(); Intent receiveURLIntent = new Intent(MainActivity.this, CensorCensusService.class); extras.putString("url", urlET.getText().toString()); extras.putString("hash", MD5(urlET.getText().toString())); extras.putInt("urgency", 0); extras.putBoolean("local", true); //Add our extra info if (getSharedPreferences(MainActivity.class.getSimpleName(), Context.MODE_PRIVATE) .getBoolean("sendISPMeta", true)) { WifiManager wifiMgr = (WifiManager) getSystemService(Context.WIFI_SERVICE); WifiInfo wifiInfo = wifiMgr.getConnectionInfo(); TelephonyManager telephonyManager = ((TelephonyManager) getSystemService( Context.TELEPHONY_SERVICE)); if (wifiMgr.isWifiEnabled() && null != wifiInfo.getSSID()) { LocalCache lc = null; Pair<Boolean, String> seenBefore = null; try { lc = new LocalCache(MainActivity.this); lc.open(); seenBefore = lc.findSSID(wifiInfo.getSSID().replaceAll("\"", "")); } catch (Exception e) { e.printStackTrace(); } if (null != lc) lc.close(); if (seenBefore.first) { extras.putString("isp", seenBefore.second); } else { extras.putString("isp", "unknown"); } try { extras.putString("sim", telephonyManager.getSimOperatorName()); } catch (Exception e) { e.printStackTrace(); } } else { try { extras.putString("isp", telephonyManager.getNetworkOperatorName()); } catch (Exception e) { e.printStackTrace(); } try { extras.putString("sim", telephonyManager.getSimOperatorName()); } catch (Exception e) { e.printStackTrace(); } } } receiveURLIntent.putExtras(extras); startService(receiveURLIntent); dialog.cancel(); } }).setNegativeButton(R.string.action_cancel, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); builder.show(); return true; } } return super.onOptionsItemSelected(item); } @Override public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { // When the given tab is selected, switch to the corresponding page in // the ViewPager. mViewPager.setCurrentItem(tab.getPosition()); } @Override public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } @Override public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } @Override protected void onResume() { super.onResume(); checkPlayServices(); } /** * A {@link FragmentPagerAdapter} that returns a fragment corresponding to * one of the sections/tabs/pages. */ public class SectionsPagerAdapter extends FragmentPagerAdapter { public SectionsPagerAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int position) { Fragment getFragment = null; switch (position) { case 0: { getFragment = new WirelessConfigFragment(); } break; case 1: { getFragment = new CheckConfigFragment(); } break; case 2: { getFragment = new OrgFragment(); } break; case 3: { getFragment = new StatsFragment(); } break; } return getFragment; } @Override public int getCount() { // Show 3 total pages. return 4; } @Override public CharSequence getPageTitle(int position) { Locale l = Locale.getDefault(); switch (position) { case 0: return getString(R.string.title_section1).toUpperCase(l); case 1: return getString(R.string.title_section2).toUpperCase(l); case 2: return getString(R.string.title_section3).toUpperCase(l); case 3: return getString(R.string.title_section4).toUpperCase(l); } return null; } } }