Java Code Examples for android.net.ConnectivityManager#registerNetworkCallback()

The following examples show how to use android.net.ConnectivityManager#registerNetworkCallback() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: RequirementsWatcher.java    From TelePlus-Android with GNU General Public License v2.0 7 votes vote down vote up 
@TargetApi(23)
private void registerNetworkCallbackV23() {
  ConnectivityManager connectivityManager =
      (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
  NetworkRequest request =
      new NetworkRequest.Builder()
          .addCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)
          .build();
  networkCallback = new CapabilityValidatedCallback();
  connectivityManager.registerNetworkCallback(request, networkCallback);
}
Example 2
Source File: FragmentOptionsConnection.java    From FairEmail with GNU General Public License v3.0 7 votes vote down vote up 
@Override
public void onResume() {
    super.onResume();

    ConnectivityManager cm = (ConnectivityManager) getContext().getSystemService(Context.CONNECTIVITY_SERVICE);
    if (cm == null)
        return;

    NetworkRequest.Builder builder = new NetworkRequest.Builder();
    builder.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
    cm.registerNetworkCallback(builder.build(), networkCallback);
}
Example 3
Source File: SambaProviderApplication.java    From samba-documents-provider with GNU General Public License v3.0 6 votes vote down vote up 
private void registerNetworkCallback(Context context) {
  final ConnectivityManager manager =
      (ConnectivityManager) context.getSystemService(CONNECTIVITY_SERVICE);
  manager.registerNetworkCallback(
      new NetworkRequest.Builder()
          .addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
          .addTransportType(NetworkCapabilities.TRANSPORT_ETHERNET)
          .build(),
      new NetworkCallback() {
        @Override
        public void onAvailable(Network network) {
          mSambaClient.reset();
        }
      });
}
Example 4
Source File: RequirementsWatcher.java    From Telegram with GNU General Public License v2.0 5 votes vote down vote up 
@TargetApi(23)
private void registerNetworkCallbackV23() {
  ConnectivityManager connectivityManager =
      Assertions.checkNotNull(
          (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE));
  NetworkRequest request =
      new NetworkRequest.Builder()
          .addCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)
          .build();
  networkCallback = new CapabilityValidatedCallback();
  connectivityManager.registerNetworkCallback(request, networkCallback);
}
Example 5
Source File: RequirementsWatcher.java    From MediaSDK with Apache License 2.0 5 votes vote down vote up 
@TargetApi(23)
private void registerNetworkCallbackV23() {
  ConnectivityManager connectivityManager =
      Assertions.checkNotNull(
          (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE));
  NetworkRequest request =
      new NetworkRequest.Builder()
          .addCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)
          .build();
  networkCallback = new CapabilityValidatedCallback();
  connectivityManager.registerNetworkCallback(request, networkCallback);
}
Example 6
Source File: FadeInNetworkImageView.java    From QuickLyric with GNU General Public License v3.0 5 votes vote down vote up 
@TargetApi(21)
@Override
public void setImageUrl(String url, ImageLoader imageLoader) {
    mShowLocal = TextUtils.isEmpty(url);
    if (mDiskCache.get(url) == null && !OnlineAccessVerifier.check(getContext())) {
        this.setImageBitmap(null);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            final ConnectivityManager cm = (ConnectivityManager)
                    getContext().getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
            networkCallback = new ConnectivityManager.NetworkCallback() {
                @Override
                public void onAvailable(Network network) {
                    super.onAvailable(network);
                    new CoverArtLoader((MainActivity) FadeInNetworkImageView.this.getActivity()).execute(mLyrics);
                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && networkCallback != null)
                        try {
                            cm.unregisterNetworkCallback(networkCallback);
                        } catch (IllegalArgumentException ignored) {
                        }
                }
            };
            NetworkRequest request = new NetworkRequest.Builder()
                    .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET).build();
            cm.registerNetworkCallback(request, networkCallback);
        }
        defaultShown = true;
    } else {
        super.setImageUrl(url, imageLoader);
        if (!TextUtils.isEmpty(url))
            defaultShown = false;
    }
}
Example 7
Source File: RequirementsWatcher.java    From Telegram-FOSS with GNU General Public License v2.0 5 votes vote down vote up 
@TargetApi(23)
private void registerNetworkCallbackV23() {
  ConnectivityManager connectivityManager =
      Assertions.checkNotNull(
          (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE));
  NetworkRequest request =
      new NetworkRequest.Builder()
          .addCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)
          .build();
  networkCallback = new CapabilityValidatedCallback();
  connectivityManager.registerNetworkCallback(request, networkCallback);
}
Example 8
Source File: AndroidDnsServer.java    From happy-dns-android with MIT License 5 votes vote down vote up 
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
AndroidResolver(Context context){
    networkCallback = false;

    List<InetAddress> addresses = getByReflection();
    if (addresses == null) {
        addresses = getByCommand();
    }

    if(addresses == null){
        ///Android 8 , net.dns* was disabled, query dns servers must use network callback
        ///@see https://developer.android.com/about/versions/oreo/android-8.0-changes.html
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            ConnectivityManager connectivityManager =
                    (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

            NetworkRequest.Builder builder = new NetworkRequest.Builder();

            connectivityManager.registerNetworkCallback(builder.build(),
                    new ConnectivityManager.NetworkCallback(){

                        @Override
                        public void onLinkPropertiesChanged(Network network, LinkProperties linkProperties) {

                            if(linkProperties != null)
                                dnsServers.addAll(linkProperties.getDnsServers());

                            networkCallback = true;
                        }

                    });
        }
    }
    else {
        dnsServers.addAll(addresses);
    }


}
Example 9
Source File: ConnectivityNetworkCallback.java    From unity-ads-android with Apache License 2.0 5 votes vote down vote up 
public static void register() {
	if(_impl == null) {
		_impl = new ConnectivityNetworkCallback();

		ConnectivityManager cm = (ConnectivityManager) ClientProperties.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
		cm.registerNetworkCallback(new NetworkRequest.Builder().build(), _impl);
	}
}
Example 10
Source File: ConnectivityHelper.java    From libcommon with Apache License 2.0 5 votes vote down vote up 
@SuppressLint("NewApi")
@RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE)
private void init() {
	if (DEBUG) Log.v(TAG, "init:");
	final ConnectivityManager manager = requireConnectivityManager();
	if (BuildCheck.isAPI21()) {
		mOnNetworkActiveListener = new MyOnNetworkActiveListener();
		manager.addDefaultNetworkActiveListener(mOnNetworkActiveListener);	// API>=21
		mNetworkCallback = new MyNetworkCallback();
		// ACCESS_NETWORK_STATEパーミッションが必要
		if (BuildCheck.isAPI23()) {
			updateActiveNetwork(manager.getActiveNetwork());	// API>=23
			if (BuildCheck.isAPI24()) {
				manager.registerDefaultNetworkCallback(mNetworkCallback);	// API>=24
			} else if (BuildCheck.isAPI26()) {
				manager.registerDefaultNetworkCallback(mNetworkCallback, mAsyncHandler); // API>=26
			}
		} else {
			manager.registerNetworkCallback(
				new NetworkRequest.Builder().build(),
				mNetworkCallback);	// API>=21
		}
	} else {
		mNetworkChangedReceiver = new NetworkChangedReceiver(this);
		final IntentFilter intentFilter = new IntentFilter();
		intentFilter.addAction(ACTION_GLOBAL_CONNECTIVITY_CHANGE);
		requireContext().registerReceiver(mNetworkChangedReceiver, intentFilter);
	}
}
Example 11
Source File: TransmitterActivity.java    From sample-lowpan with Apache License 2.0 5 votes vote down vote up 
/**
 * Initializes the network.
 */
private void resetNetwork() {
    // Initialize network
    onNoNetwork();
    mConnectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkRequest networkRequest = new NetworkRequest.Builder()
            .addTransportType(NetworkCapabilities.TRANSPORT_LOWPAN)
            .build();
    mBackgroundHandlerThread = new HandlerThread(TAG);
    mBackgroundHandlerThread.start();
    mHandler = new Handler(mBackgroundHandlerThread.getLooper());
    // Make sure that it is connected to a valid network
    mConnectivityManager.registerNetworkCallback(networkRequest,
            mNetworkCallback, mUiThreadHandler);
}
Example 12
Source File: RequirementsWatcher.java    From TelePlus-Android with GNU General Public License v2.0 5 votes vote down vote up 
@TargetApi(23)
private void registerNetworkCallbackV23() {
  ConnectivityManager connectivityManager =
      (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
  NetworkRequest request =
      new NetworkRequest.Builder()
          .addCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)
          .build();
  networkCallback = new CapabilityValidatedCallback();
  connectivityManager.registerNetworkCallback(request, networkCallback);
}
Example 13
Source File: VideoDownloadManager.java    From MediaSDK with Apache License 2.0 5 votes vote down vote up 
@SuppressLint("NewApi")
@SuppressWarnings({"MissingPermission"})
private void registerConnectionListener(Context context) {
    NetworkCallbackImpl networkCallback = new NetworkCallbackImpl(mNetworkListener);
    NetworkRequest request = new NetworkRequest.Builder().build();
    ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    if (manager != null) {
        manager.registerNetworkCallback(request, networkCallback);
    }
}
Example 14
Source File: TindroidApp.java    From tindroid with Apache License 2.0 4 votes vote down vote up 
@Override
public void onCreate() {
    super.onCreate();
    try {
        PackageInfo pi = getPackageManager().getPackageInfo(getPackageName(), 0);
        sAppVersion = pi.versionName;
        sAppBuild = pi.versionCode;
    } catch (PackageManager.NameNotFoundException e) {
        Log.w(TAG, "Failed to retrieve app version", e);
    }

    // Disable Crashlytics for debug builds.
    FirebaseCrashlytics.getInstance().setCrashlyticsCollectionEnabled(!BuildConfig.DEBUG);

    BroadcastReceiver br = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String token = intent.getStringExtra("token");
            if (token != null && !token.equals("") && sTinodeCache != null) {
                sTinodeCache.setDeviceToken(token);
            }
        }
    };
    LocalBroadcastManager.getInstance(this).registerReceiver(br, new IntentFilter("FCM_REFRESH_TOKEN"));

    createNotificationChannel();

    ProcessLifecycleOwner.get().getLifecycle().addObserver(this);

    // Listen to connectivity changes.
    ConnectivityManager cm = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
    if (cm == null) {
        return;
    }
    NetworkRequest req = new NetworkRequest.
            Builder().addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET).build();
    cm.registerNetworkCallback(req, new ConnectivityManager.NetworkCallback() {
            @Override
            public void onAvailable(@NonNull Network network) {
                super.onAvailable(network);
                if (sTinodeCache != null) {
                    sTinodeCache.reconnectNow(true, false, false);
                }
            }
        });

    // Check if preferences already exist. If not, create them.
    SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this);
    sServerHost = pref.getString("pref_hostName", null);
    if (TextUtils.isEmpty(sServerHost)) {
        // No preferences found. Save default values.
        SharedPreferences.Editor editor = pref.edit();
        sServerHost = getDefaultHostName(this);
        sUseTLS = getDefaultTLS();
        editor.putString("pref_hostName", sServerHost);
        editor.putBoolean("pref_useTLS", sUseTLS);
        editor.apply();
    } else {
        sUseTLS = pref.getBoolean("pref_useTLS", false);
    }
}
Example 15
Source File: ServiceSinkhole.java    From NetGuard with GNU General Public License v3.0 4 votes vote down vote up 
@Override
public void onCreate() {
    Log.i(TAG, "Create version=" + Util.getSelfVersionName(this) + "/" + Util.getSelfVersionCode(this));
    startForeground(NOTIFY_WAITING, getWaitingNotification());

    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);

    if (jni_context != 0) {
        Log.w(TAG, "Create with context=" + jni_context);
        jni_stop(jni_context);
        synchronized (jni_lock) {
            jni_done(jni_context);
            jni_context = 0;
        }
    }

    // Native init
    jni_context = jni_init(Build.VERSION.SDK_INT);
    Log.i(TAG, "Created context=" + jni_context);
    boolean pcap = prefs.getBoolean("pcap", false);
    setPcap(pcap, this);

    prefs.registerOnSharedPreferenceChangeListener(this);

    Util.setTheme(this);
    super.onCreate();

    HandlerThread commandThread = new HandlerThread(getString(R.string.app_name) + " command", Process.THREAD_PRIORITY_FOREGROUND);
    HandlerThread logThread = new HandlerThread(getString(R.string.app_name) + " log", Process.THREAD_PRIORITY_BACKGROUND);
    HandlerThread statsThread = new HandlerThread(getString(R.string.app_name) + " stats", Process.THREAD_PRIORITY_BACKGROUND);
    commandThread.start();
    logThread.start();
    statsThread.start();

    commandLooper = commandThread.getLooper();
    logLooper = logThread.getLooper();
    statsLooper = statsThread.getLooper();

    commandHandler = new CommandHandler(commandLooper);
    logHandler = new LogHandler(logLooper);
    statsHandler = new StatsHandler(statsLooper);

    // Listen for user switches
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
        IntentFilter ifUser = new IntentFilter();
        ifUser.addAction(Intent.ACTION_USER_BACKGROUND);
        ifUser.addAction(Intent.ACTION_USER_FOREGROUND);
        registerReceiver(userReceiver, ifUser);
        registeredUser = true;
    }

    // Listen for idle mode state changes
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        IntentFilter ifIdle = new IntentFilter();
        ifIdle.addAction(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED);
        registerReceiver(idleStateReceiver, ifIdle);
        registeredIdleState = true;
    }

    // Listen for added/removed applications
    IntentFilter ifPackage = new IntentFilter();
    ifPackage.addAction(Intent.ACTION_PACKAGE_ADDED);
    ifPackage.addAction(Intent.ACTION_PACKAGE_REMOVED);
    ifPackage.addDataScheme("package");
    registerReceiver(packageChangedReceiver, ifPackage);
    registeredPackageChanged = true;

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
        try {
            listenNetworkChanges();
        } catch (Throwable ex) {
            Log.w(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
            listenConnectivityChanges();
        }
    else
        listenConnectivityChanges();

    // Monitor networks
    ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    cm.registerNetworkCallback(
            new NetworkRequest.Builder()
                    .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET).build(),
            networkMonitorCallback);

    // Setup house holding
    Intent alarmIntent = new Intent(this, ServiceSinkhole.class);
    alarmIntent.setAction(ACTION_HOUSE_HOLDING);
    PendingIntent pi;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
        pi = PendingIntent.getForegroundService(this, 0, alarmIntent, PendingIntent.FLAG_UPDATE_CURRENT);
    else
        pi = PendingIntent.getService(this, 0, alarmIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    am.setInexactRepeating(AlarmManager.RTC, SystemClock.elapsedRealtime() + 60 * 1000, AlarmManager.INTERVAL_HALF_DAY, pi);
}
Example 16
Source File: ServiceSend.java    From FairEmail with GNU General Public License v3.0 4 votes vote down vote up 
@Override
public void onCreate() {
    EntityLog.log(this, "Service send create");
    super.onCreate();
    startForeground(Helper.NOTIFICATION_SEND, getNotificationService().build());

    PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    wlOutbox = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, BuildConfig.APPLICATION_ID + ":send");

    // Observe unsent count
    DB db = DB.getInstance(this);
    db.operation().liveUnsent().observe(this, new Observer<TupleUnsent>() {
        @Override
        public void onChanged(TupleUnsent unsent) {
            if (unsent == null || !unsent.equals(lastUnsent)) {
                lastUnsent = unsent;

                try {
                    NotificationManager nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
                    nm.notify(Helper.NOTIFICATION_SEND, getNotificationService().build());
                } catch (Throwable ex) {
                    Log.w(ex);
                }
            }
        }
    });

    // Observe send operations
    db.operation().liveOperations(null).observe(owner, new Observer<List<TupleOperationEx>>() {
        @Override
        public void onChanged(List<TupleOperationEx> operations) {
            if (operations == null)
                operations = new ArrayList<>();

            if (operations.size() == 0)
                stopSelf();

            final List<TupleOperationEx> process = new ArrayList<>();

            List<Long> ops = new ArrayList<>();
            for (TupleOperationEx op : operations) {
                if (!handling.contains(op.id))
                    process.add(op);
                ops.add(op.id);
            }
            handling = ops;

            if (process.size() > 0) {
                Log.i("OUTBOX process=" + TextUtils.join(",", process) +
                        " handling=" + TextUtils.join(",", handling));

                executor.submit(new Runnable() {
                    @Override
                    public void run() {
                        processOperations(process);
                    }
                });
            }
        }
    });

    lastSuitable = ConnectionHelper.getNetworkState(this).isSuitable();
    if (lastSuitable)
        owner.start();

    ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkRequest.Builder builder = new NetworkRequest.Builder();
    builder.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
    cm.registerNetworkCallback(builder.build(), networkCallback);

    IntentFilter iif = new IntentFilter();
    iif.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
    iif.addAction(Intent.ACTION_AIRPLANE_MODE_CHANGED);
    registerReceiver(connectionChangedReceiver, iif);
}
Example 17
Source File: ServiceSinkhole.java    From tracker-control-android with GNU General Public License v3.0 4 votes vote down vote up 
@Override
public void onCreate() {
    Log.i(TAG, "Create version=" + Util.getSelfVersionName(this) + "/" + Util.getSelfVersionCode(this));
    startForeground(NOTIFY_WAITING, getWaitingNotification());

    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);

    if (jni_context != 0) {
        Log.w(TAG, "Create with context=" + jni_context);
        jni_stop(jni_context);
        synchronized (jni_lock) {
            jni_done(jni_context);
            jni_context = 0;
        }
    }

    // Native init
    jni_context = jni_init(Build.VERSION.SDK_INT);
    Log.i(TAG, "Created context=" + jni_context);
    boolean pcap = prefs.getBoolean("pcap", false);
    setPcap(pcap, this);

    prefs.registerOnSharedPreferenceChangeListener(this);

    Util.setTheme(this);
    super.onCreate();

    HandlerThread commandThread = new HandlerThread(getString(R.string.app_name) + " command", Process.THREAD_PRIORITY_FOREGROUND);
    HandlerThread logThread = new HandlerThread(getString(R.string.app_name) + " log", Process.THREAD_PRIORITY_BACKGROUND);
    HandlerThread statsThread = new HandlerThread(getString(R.string.app_name) + " stats", Process.THREAD_PRIORITY_BACKGROUND);
    commandThread.start();
    logThread.start();
    statsThread.start();

    commandLooper = commandThread.getLooper();
    logLooper = logThread.getLooper();
    statsLooper = statsThread.getLooper();

    commandHandler = new CommandHandler(commandLooper);
    logHandler = new LogHandler(logLooper);
    statsHandler = new StatsHandler(statsLooper);

    // Listen for user switches
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
        IntentFilter ifUser = new IntentFilter();
        ifUser.addAction(Intent.ACTION_USER_BACKGROUND);
        ifUser.addAction(Intent.ACTION_USER_FOREGROUND);
        registerReceiver(userReceiver, ifUser);
        registeredUser = true;
    }

    // Listen for idle mode state changes
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        IntentFilter ifIdle = new IntentFilter();
        ifIdle.addAction(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED);
        registerReceiver(idleStateReceiver, ifIdle);
        registeredIdleState = true;
    }

    // Listen for added/removed applications
    IntentFilter ifPackage = new IntentFilter();
    ifPackage.addAction(Intent.ACTION_PACKAGE_ADDED);
    ifPackage.addAction(Intent.ACTION_PACKAGE_REMOVED);
    ifPackage.addDataScheme("package");
    registerReceiver(packageChangedReceiver, ifPackage);
    registeredPackageChanged = true;

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
        try {
            listenNetworkChanges();
        } catch (Throwable ex) {
            Log.w(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
            listenConnectivityChanges();
        }
    else
        listenConnectivityChanges();

    // Monitor networks
    ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    cm.registerNetworkCallback(
            new NetworkRequest.Builder()
                    .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET).build(),
            networkMonitorCallback);

    // Setup house holding
    Intent alarmIntent = new Intent(this, ServiceSinkhole.class);
    alarmIntent.setAction(ACTION_HOUSE_HOLDING);
    PendingIntent pi;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
        pi = PendingIntent.getForegroundService(this, 0, alarmIntent, PendingIntent.FLAG_UPDATE_CURRENT);
    else
        pi = PendingIntent.getService(this, 0, alarmIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    am.setInexactRepeating(AlarmManager.RTC, SystemClock.elapsedRealtime() + 60 * 1000, AlarmManager.INTERVAL_HALF_DAY, pi);
}