Example usage for android.net ConnectivityManager CONNECTIVITY_ACTION

Introduction

In this page you can find the example usage for android.net ConnectivityManager CONNECTIVITY_ACTION.

Prototype

String CONNECTIVITY_ACTION

To view the source code for android.net ConnectivityManager CONNECTIVITY_ACTION.

Click Source Link

Document

A change in network connectivity has occurred.

Usage

From source file:ja.keystore00.wallet.service.BlockchainServiceImpl.java

@Override
public void onCreate() {
    serviceCreatedAt = System.currentTimeMillis();
    log.debug(".onCreate()");

    super.onCreate();

    nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    final String lockName = getPackageName() + " blockchain sync";

    final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, lockName);

    application = (WalletApplication) getApplication();
    prefs = PreferenceManager.getDefaultSharedPreferences(this);
    final Wallet wallet = application.getWallet();

    bestChainHeightEver = prefs.getInt(Constants.PREFS_KEY_BEST_CHAIN_HEIGHT_EVER, 0);

    peerConnectivityListener = new PeerConnectivityListener();

    sendBroadcastPeerState(0);/*from w  w  w.  ja v  a2s  . c o m*/

    final IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
    intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_LOW);
    intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_OK);
    registerReceiver(connectivityReceiver, intentFilter);

    blockChainFile = new File(getDir("blockstore", Context.MODE_PRIVATE), Constants.BLOCKCHAIN_FILENAME);
    final boolean blockChainFileExists = blockChainFile.exists();

    if (!blockChainFileExists) {
        log.info("blockchain does not exist, resetting wallet");

        wallet.clearTransactions(0);
        wallet.setLastBlockSeenHeight(-1); // magic value
        wallet.setLastBlockSeenHash(null);
    }

    try {
        blockStore = new SPVBlockStore(Constants.NETWORK_PARAMETERS, blockChainFile);
        blockStore.getChainHead(); // detect corruptions as early as possible

        final long earliestKeyCreationTime = wallet.getEarliestKeyCreationTime();

        if (!blockChainFileExists && earliestKeyCreationTime > 0) {
            try {
                final InputStream checkpointsInputStream = getAssets().open(Constants.CHECKPOINTS_FILENAME);
                CheckpointManager.checkpoint(Constants.NETWORK_PARAMETERS, checkpointsInputStream, blockStore,
                        earliestKeyCreationTime);
            } catch (final IOException x) {
                log.error("problem reading checkpoints, continuing without", x);
            }
        }
    } catch (final BlockStoreException x) {
        blockChainFile.delete();

        final String msg = "blockstore cannot be created";
        log.error(msg, x);
        throw new Error(msg, x);
    }

    log.info("using " + blockStore.getClass().getName());

    try {
        blockChain = new BlockChain(Constants.NETWORK_PARAMETERS, wallet, blockStore);
    } catch (final BlockStoreException x) {
        throw new Error("blockchain cannot be created", x);
    }

    application.getWallet().addEventListener(walletEventListener, Threading.SAME_THREAD);

    registerReceiver(tickReceiver, new IntentFilter(Intent.ACTION_TIME_TICK));

    maybeRotateKeys();
}

---

From source file:de.schildbach.litecoinwallet.service.BlockchainServiceImpl.java

@Override
public void onCreate() {
    serviceCreatedAt = System.currentTimeMillis();
    log.debug(".onCreate()");

    super.onCreate();

    nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    final String lockName = getPackageName() + " blockchain sync";

    final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, lockName);

    final WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
    wifiLock = wifiManager.createWifiLock(WifiManager.WIFI_MODE_FULL, lockName);
    wifiLock.setReferenceCounted(false);

    application = (WalletApplication) getApplication();
    prefs = PreferenceManager.getDefaultSharedPreferences(this);
    final Wallet wallet = application.getWallet();

    bestChainHeightEver = prefs.getInt(Constants.PREFS_KEY_BEST_CHAIN_HEIGHT_EVER, 0);

    peerConnectivityListener = new PeerConnectivityListener();

    sendBroadcastPeerState(0);/*from  w  w  w.  ja va2s .c  o m*/

    final IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
    intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_LOW);
    intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_OK);
    registerReceiver(connectivityReceiver, intentFilter);

    blockChainFile = new File(getDir("blockstore", Context.MODE_PRIVATE), Constants.BLOCKCHAIN_FILENAME);
    final boolean blockChainFileExists = blockChainFile.exists();

    if (!blockChainFileExists) {
        log.info("blockchain does not exist, resetting litecoinwallet");

        wallet.clearTransactions(0);
        wallet.setLastBlockSeenHeight(-1); // magic value
        wallet.setLastBlockSeenHash(null);
    }

    try {
        blockStore = new SPVBlockStore(Constants.NETWORK_PARAMETERS, blockChainFile);
        blockStore.getChainHead(); // detect corruptions as early as possible

        final long earliestKeyCreationTime = wallet.getEarliestKeyCreationTime();

        if (!blockChainFileExists && earliestKeyCreationTime > 0) {
            try {
                final InputStream checkpointsInputStream = getAssets().open(Constants.CHECKPOINTS_FILENAME);
                CheckpointManager.checkpoint(Constants.NETWORK_PARAMETERS, checkpointsInputStream, blockStore,
                        earliestKeyCreationTime);
            } catch (final IOException x) {
                log.error("problem reading checkpoints, continuing without", x);
            }
        }
    } catch (final BlockStoreException x) {
        blockChainFile.delete();

        final String msg = "blockstore cannot be created";
        log.error(msg, x);
        throw new Error(msg, x);
    }

    log.info("using " + blockStore.getClass().getName());

    try {
        blockChain = new BlockChain(Constants.NETWORK_PARAMETERS, wallet, blockStore);
    } catch (final BlockStoreException x) {
        throw new Error("blockchain cannot be created", x);
    }

    application.getWallet().addEventListener(walletEventListener);

    registerReceiver(tickReceiver, new IntentFilter(Intent.ACTION_TIME_TICK));

    maybeRotateKeys();
}

---

From source file:com.mybitcoin.wallet.service.BlockchainServiceImpl.java

@Override
public void onCreate() {
    serviceCreatedAt = System.currentTimeMillis();
    //      log.debug(".onCreate()");

    super.onCreate();

    nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    final String lockName = getPackageName() + " blockchain sync";

    final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, lockName);

    application = (WalletApplication) getApplication();
    config = application.getConfiguration();
    final Wallet wallet = application.getWallet();

    bestChainHeightEver = config.getBestChainHeightEver();

    peerConnectivityListener = new PeerConnectivityListener();

    sendBroadcastPeerState(0);/*w  ww. j ava  2  s .  com*/

    final IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
    intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_LOW);
    intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_OK);
    registerReceiver(connectivityReceiver, intentFilter);

    blockChainFile = new File(getDir("blockstore", Context.MODE_PRIVATE), Constants.BLOCKCHAIN_FILENAME);
    final boolean blockChainFileExists = blockChainFile.exists();

    if (!blockChainFileExists) {
        log.info("blockchain does not exist, resetting wallet");

        wallet.clearTransactions(0);
        wallet.setLastBlockSeenHeight(-1); // magic value
        wallet.setLastBlockSeenHash(null);
    }

    try {
        blockStore = new SPVBlockStore(Constants.NETWORK_PARAMETERS, blockChainFile);
        blockStore.getChainHead(); // detect corruptions as early as possible

        final long earliestKeyCreationTime = wallet.getEarliestKeyCreationTime();

        if (!blockChainFileExists && earliestKeyCreationTime > 0) {
            try {
                final InputStream checkpointsInputStream = getAssets().open(Constants.CHECKPOINTS_FILENAME);
                CheckpointManager.checkpoint(Constants.NETWORK_PARAMETERS, checkpointsInputStream, blockStore,
                        earliestKeyCreationTime);
            } catch (final IOException x) {
                log.error("problem reading checkpoints, continuing without", x);
            }
        }
    } catch (final BlockStoreException x) {
        blockChainFile.delete();

        final String msg = "blockstore cannot be created";
        log.error(msg, x);
        throw new Error(msg, x);
    }

    log.info("using " + blockStore.getClass().getName());

    try {
        blockChain = new BlockChain(Constants.NETWORK_PARAMETERS, wallet, blockStore);
    } catch (final BlockStoreException x) {
        throw new Error("blockchain cannot be created", x);
    }

    application.getWallet().addEventListener(walletEventListener, Threading.SAME_THREAD);

    registerReceiver(tickReceiver, new IntentFilter(Intent.ACTION_TIME_TICK));

    maybeRotateKeys();
}

---

From source file:com.matthewmitchell.peercoin_android_wallet.service.BlockchainServiceImpl.java

@Override
public void onCreate() {
    serviceCreatedAt = System.currentTimeMillis();
    log.debug(".onCreate()");

    super.onCreate();

    nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    final String lockName = getPackageName() + " blockchain sync";

    final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, lockName);

    application = (WalletApplication) getApplication();

    // Sometimes the application is not loaded for some reason, even though assertions of config != null do not fail.
    // Only solution here then is to work around the problem by only using the configuration when the application is loaded
    // Maybe it's because Android is stupid, or am I?

    application.setOnLoadedCallback(new Runnable() {

        @Override/* w w  w .j  a  v  a2  s . c  o m*/
        public void run() {

            config = application.getConfiguration();
            peerConnectivityListener = new PeerConnectivityListener();
            broadcastPeerState(0);

            application.getWallet().addEventListener(walletEventListener, Threading.SAME_THREAD);
            registerReceiver(tickReceiver, new IntentFilter(Intent.ACTION_TIME_TICK));

            loadBlockchain = new BlockchainLoader(BlockchainServiceImpl.this, application);
            loadBlockchain.registerListener(0, BlockchainServiceImpl.this);
            loadBlockchain.startLoading();

        }

    });

    final IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
    intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_LOW);
    intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_OK);
    registerReceiver(connectivityReceiver, intentFilter);

}

---

From source file:com.blu3f1re.reddwallet.service.BlockchainServiceImpl.java

@Override
public void onCreate() {
    serviceCreatedAt = System.currentTimeMillis();
    log.debug(".onCreate()");

    super.onCreate();

    nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    final String lockName = getPackageName() + " blockchain sync";

    final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, lockName);

    application = (WalletApplication) getApplication();
    config = application.getConfiguration();
    final Wallet wallet = application.getWallet();

    bestChainHeightEver = config.getBestChainHeightEver();

    peerConnectivityListener = new PeerConnectivityListener();

    sendBroadcastPeerState(0);/* www  .j  av  a  2 s  .  c  o  m*/

    final IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
    intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_LOW);
    intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_OK);
    registerReceiver(connectivityReceiver, intentFilter);

    blockChainFile = new File(getDir("blockstore", Context.MODE_PRIVATE), Constants.BLOCKCHAIN_FILENAME);
    final boolean blockChainFileExists = blockChainFile.exists();

    if (!blockChainFileExists) {
        log.info("blockchain does not exist, resetting wallet");

        wallet.clearTransactions(0);
        wallet.setLastBlockSeenHeight(-1); // magic value
        wallet.setLastBlockSeenHash(null);
    }

    try {
        blockStore = new SPVBlockStore(Constants.NETWORK_PARAMETERS, blockChainFile);
        blockStore.getChainHead(); // detect corruptions as early as possible

        final long earliestKeyCreationTime = wallet.getEarliestKeyCreationTime();

        if (!blockChainFileExists && earliestKeyCreationTime > 0) {
            try {
                final InputStream checkpointsInputStream = getAssets().open(Constants.CHECKPOINTS_FILENAME);
                CheckpointManager.checkpoint(Constants.NETWORK_PARAMETERS, checkpointsInputStream, blockStore,
                        earliestKeyCreationTime);
            } catch (final IOException x) {
                log.error("problem reading checkpoints, continuing without", x);
            }
        }
    } catch (final BlockStoreException x) {
        blockChainFile.delete();

        final String msg = "blockstore cannot be created";
        log.error(msg, x);
        throw new Error(msg, x);
    }

    log.info("using " + blockStore.getClass().getName());

    try {
        blockChain = new BlockChain(Constants.NETWORK_PARAMETERS, wallet, blockStore);
    } catch (final BlockStoreException x) {
        throw new Error("blockchain cannot be created", x);
    }

    application.getWallet().addEventListener(walletEventListener, Threading.SAME_THREAD);

    registerReceiver(tickReceiver, new IntentFilter(Intent.ACTION_TIME_TICK));

    maybeRotateKeys();
}

---

From source file:com.kncwallet.wallet.service.BlockchainServiceImpl.java

@Override
public void onCreate() {
    serviceCreatedAt = System.currentTimeMillis();
    log.debug(".onCreate()");

    super.onCreate();

    nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    final String lockName = getPackageName() + " blockchain sync";

    final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, lockName);

    application = (WalletApplication) getApplication();
    prefs = PreferenceManager.getDefaultSharedPreferences(this);
    final Wallet wallet = application.getWallet();

    bestChainHeightEver = prefs.getInt(Constants.PREFS_KEY_BEST_CHAIN_HEIGHT_EVER, 0);

    peerConnectivityListener = new PeerConnectivityListener();

    sendBroadcastPeerState(0);//from ww  w.  j  av  a2 s. c  om

    final IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
    intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_LOW);
    intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_OK);
    registerReceiver(connectivityReceiver, intentFilter);

    blockChainFile = new File(getDir("blockstore", Context.MODE_PRIVATE), Constants.BLOCKCHAIN_FILENAME);
    final boolean blockChainFileExists = blockChainFile.exists();

    if (!blockChainFileExists) {
        log.info("blockchain does not exist, resetting wallet");

        wallet.clearTransactions(0);
        wallet.setLastBlockSeenHeight(-1); // magic value
        wallet.setLastBlockSeenHash(null);
    }

    try {
        blockStore = new SPVBlockStore(Constants.NETWORK_PARAMETERS, blockChainFile);
        blockStore.getChainHead(); // detect corruptions as early as possible

        final long earliestKeyCreationTime = wallet.getEarliestKeyCreationTime();

        if (!blockChainFileExists && earliestKeyCreationTime > 0) {
            try {
                final InputStream checkpointsInputStream = getAssets().open(Constants.CHECKPOINTS_FILENAME);
                CheckpointManager.checkpoint(Constants.NETWORK_PARAMETERS, checkpointsInputStream, blockStore,
                        earliestKeyCreationTime);
            } catch (final IOException x) {
                log.error("problem reading checkpoints, continuing without", x);
            }
        }
    } catch (final BlockStoreException x) {
        blockChainFile.delete();

        final String msg = "blockstore cannot be created";
        log.error(msg, x);
        throw new Error(msg, x);
    }

    log.info("using " + blockStore.getClass().getName());

    try {
        blockChain = new BlockChain(Constants.NETWORK_PARAMETERS, wallet, blockStore);
    } catch (final BlockStoreException x) {
        throw new Error("blockchain cannot be created", x);
    }

    application.getWallet().addEventListener(walletEventListener);

    registerReceiver(tickReceiver, new IntentFilter(Intent.ACTION_TIME_TICK));

    maybeRotateKeys();
}

---

From source file:de.da_sense.moses.client.WelcomeActivity.java

@Override
protected void onResume() {
    super.onResume();
    /*/*from   w ww .  j  a v  a  2  s . com*/
     * Register the RECEIVER for receiving informations about connectivity
     * to Internet ##############
     */
    mConnReceiver = new BroadcastReceiver() {
        public void onReceive(Context context, Intent intent) {
            Log.i(LOG_TAG, "Internet connection changed");
            ConnectivityManager cm = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo currentNetworkInfo = cm.getActiveNetworkInfo();
            // go through all Fragments and inform the ones implementing the
            // InternetConnectionChangeListener
            for (WeakReference<Fragment> fragRef : mFragList) {
                Fragment fragment = fragRef.get();
                if (fragment != null && fragment instanceof InternetConnectionChangeListener) {
                    InternetConnectionChangeListener listener = (InternetConnectionChangeListener) fragment;
                    if (currentNetworkInfo != null && currentNetworkInfo.isConnected()) {
                        Log.d(LOG_TAG,
                                "Informing a fragment about the establishment of the Internet connection");
                        listener.onConnectionEstablished();
                    } else {
                        Log.d(LOG_TAG, "Informing a fragment about the loss of the Internet connection");
                        listener.onConnectionLost();
                    }
                }
            }
        }
    };
    registerReceiver(mConnReceiver, new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
    /*
     * RECEIVER END
     * #########################################################
     * ####################
     */

    checkInstalledStatesOfApks();
    Intent startingIntent = getIntent();
    if (startingIntent.hasExtra(WelcomeActivity.KEY_VIEW_SURVEY)) {
        // some other activity has started this activity in order to show an
        // available survey, just scroll
        // to running fragment and let him do the rest
        mViewPager.setCurrentItem(WelcomeActivityPagerAdapter.TAB_RUNNING, true);
    }
}

---

From source file:com.murrayc.galaxyzoo.app.ClassifyActivity.java

@Override
public void listenForNetworkReconnection() {
    if (mReceiverNetworkReconnection != null) {
        Log.error("ClassifyActivity.listenForNetworkReconnection(): Already listening.");
        return;/*from   w ww .  ja v a 2 s . c o m*/
    }

    mReceiverNetworkReconnection = new BroadcastReceiver() {
        @Override
        public void onReceive(final Context context, final Intent intent) {
            final Utils.NetworkConnected networkConnected = Utils.getNetworkIsConnected(context,
                    Utils.getUseWifiOnlyFromSharedPrefs(ClassifyActivity.this));
            if ((networkConnected != null) && (networkConnected.connected)) {
                //Try using the network again:
                ClassifyActivity.this.stopListeningForNetworkReconnection();
                ClassifyActivity.this.startNextClassification();
            }
        }
    };

    final IntentFilter filter = new IntentFilter();
    filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
    registerReceiver(mReceiverNetworkReconnection, filter);
}

---

From source file:saphion.services.ForegroundService.java

@SuppressWarnings("deprecation")
@Override//from   ww  w .j a v a 2 s.  co  m
public void onCreate() {

    mPref = ForegroundService.this.getSharedPreferences(PREF_NAME, MODE_MULTI_PROCESS);

    // receive ACTION_BATTERY_CHANGED.
    IntentFilter filter = new IntentFilter();
    filter.addAction(Intent.ACTION_BATTERY_CHANGED);
    filter.addAction(Intent.ACTION_POWER_CONNECTED);
    filter.addAction(Intent.ACTION_POWER_DISCONNECTED);
    filter.addAction(Intent.ACTION_SCREEN_OFF);
    filter.addAction(Intent.ACTION_SCREEN_ON);
    filter.addAction(Intents.MYBAT_INTENT);
    filter.addAction(Intents.TORCH_ON);
    filter.addAction(Intents.TORCH_OFF);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        filter.addAction(Intent.ACTION_AIRPLANE_MODE_CHANGED);
        filter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
        filter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);
        filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
        filter.addAction(ConnectivityManager.ACTION_BACKGROUND_DATA_SETTING_CHANGED);
        filter.addAction(Intents.SWITCHER_INTENT);
        filter.addAction(Intents.SWITCHER_NOTI);
        filter.addAction(Intent.ACTION_CONFIGURATION_CHANGED);
    }
    registerReceiver(mBroadcastReceiver, filter);

    readbattery();

    mNM = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    if (!mPref.getBoolean(PreferenceHelper.NOTIFICATION_ENABLE, true)) {
        mNM.cancelAll();// .notify(id, notification);

    }
    try {
        mStartForeground = getClass().getMethod("startForeground", mStartForegroundSignature);
        mStopForeground = getClass().getMethod("stopForeground", mStopForegroundSignature);
        return;
    } catch (NoSuchMethodException e) {
        // Running on an older platform.
        mStartForeground = mStopForeground = null;
    }
    try {
        mSetForeground = getClass().getMethod("setForeground", mSetForegroundSignature);
    } catch (NoSuchMethodException e) {
        throw new IllegalStateException("OS doesn't have Service.startForeground OR Service.setForeground!");
    }
}

---

From source file:crea.wallet.lite.service.CreativeCoinService.java

@Override
public void onCreate() {
    serviceCreatedAt = System.currentTimeMillis();
    super.onCreate();

    boolean startService = WalletHelper.INSTANCE != null;

    transactionsReceived = new HashMap<>();
    Log.e(TAG, "START_SERVICE=" + startService);
    if (startService) {
        nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        WalletHelper.INSTANCE.autoSave(10);
        final String lockName = getPackageName() + " blockchain sync";

        final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
        wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, lockName);
        application = WalletApplication.INSTANCE;

        setWalletListener();/*  w  w w .  j  a  v a  2  s . c  om*/

        peerConnectivityListener = new PeerConnectivityListener();

        blockChainFile = Constants.WALLET.BLOCKCHAIN_FILE;
        final boolean blockChainFileExists = blockChainFile.exists();

        if (!blockChainFileExists) {
            new File(Constants.WALLET.WALLET_PATH).mkdirs();
        }
        try {
            blockStore = new SPVBlockStore(NETWORK_PARAMETERS, blockChainFile);
            blockStore.getChainHead(); // detect corruptions as early as possible

            final long earliestKeyCreationTime = WalletHelper.INSTANCE.getKeyCreationTime();

            Log.e(TAG, "CREATION_TIME=" + earliestKeyCreationTime + " BLOCKCHAIN_FILE=" + blockChainFileExists);
            if (!blockChainFileExists && earliestKeyCreationTime > 0) {
                try {
                    Configuration.getInstance().setDeletingBlockchain(true);
                    final long start = System.currentTimeMillis();
                    final InputStream checkpointsInputStream = getAssets()
                            .open("bitcoin/" + Constants.WALLET.CHECKPOINTS_FILENAME);
                    CheckpointManager.checkpoint(NETWORK_PARAMETERS, checkpointsInputStream, blockStore,
                            earliestKeyCreationTime);
                    Log.e(TAG, String.format("checkpoints loaded from '%1$s', took %2$dms",
                            Constants.WALLET.CHECKPOINTS_FILENAME, System.currentTimeMillis() - start));
                } catch (final IOException x) {
                    Log.e(TAG, "problem reading checkpoints, continuing without", x);
                }
            }
        } catch (final BlockStoreException x) {
            blockChainFile.delete();

            final String msg = "blockstore cannot be created";
            Log.e(TAG, msg, x);
        }

        try {
            blockChain = new BlockChain(NETWORK_PARAMETERS, WalletHelper.INSTANCE.getWallet(), blockStore);
        } catch (final BlockStoreException x) {
            throw new Error("blockchain cannot be created", x);
        }

        final IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
        intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_LOW);
        intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_OK);
        registerReceiver(connectivityReceiver, intentFilter); // implicitly start PeerGroup

        registerReceiver(tickReceiver, new IntentFilter(Intent.ACTION_TIME_TICK));
    } else {
        Log.e(TAG, "Incomplete conditions for start service");
        stopSelf();
    }
}

---

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