Android Open Source - sms-smap-gateway M W Connection Utils

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Back to project page sms-smap-gateway.

License

The source code is released under:

GNU General Public License

Java Source Code

package com.android.smap.utils;
/* w  w  w .  j  av a 2 s.c o  m*/
import android.app.IntentService;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.wifi.WifiManager;
import android.preference.PreferenceManager;
import android.provider.Settings;
import android.telephony.TelephonyManager;
import android.util.Log;

import com.android.smap.GatewayApp;
import com.android.smap.PhoneStateWrapper.PhoneState;

public class MWConnectionUtils {

  private static final String TAG = MWConnectionUtils.class
      .getCanonicalName();

  /**
   * isOnline - Check if there is a NetworkConnection
   * 
   * @return boolean
   */
  public static boolean isOnline(Context context) {
    ConnectivityManager cm = (ConnectivityManager) context
        .getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = cm.getActiveNetworkInfo();
    if (netInfo != null && netInfo.isConnected()) {
      return true;
    } else {
      return false;
    }
  }

  /**
   * Toggles our connection from WIFI and vice versa. If it does not and we
   * are on WIFI, then we try to switch to the mobile network.
   */
  public static void toggleConnection() {

    WifiManager wifi = (WifiManager) GatewayApp.getInstance()
        .getSystemService(Context.WIFI_SERVICE);

    // well that didn't work, let's flip our connection status, that might
    // just help.. we sleep a bit so things can connect
    boolean newWifiState = !wifi.isWifiEnabled();
    Log.d(TAG,
        "Toggling Connection: Connection test failed, flipping WIFI state to: "
            + newWifiState);
    wifi.setWifiEnabled(newWifiState);

    nap();
  }

  /**
   * Checks whether we have a mobile network connected. This hopefully catches
   * the case where the phone drops its connection for some reason.
   * 
   * @param context
   * @return
   */
  public boolean isRadioOn() {
    Context context = GatewayApp.getInstance();

    boolean isOn = false;
    ConnectivityManager cm = (ConnectivityManager) context
        .getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo[] networks = cm.getAllNetworkInfo();
    for (int i = 0; i < networks.length; i++) {
      if (networks[i].getType() == ConnectivityManager.TYPE_MOBILE
          && networks[i].isConnectedOrConnecting()) {
        isOn = true;
      }
    }

    // if our radio is off, output some debugging
    Log.d(TAG, "_RADIO STATUS");
    for (int i = 0; i < networks.length; i++) {
      Log.d(TAG, "  " + networks[i].getTypeName() + "  connection? "
          + networks[i].isConnectedOrConnecting());
    }

    // check our telephony manager
    TelephonyManager tele = (TelephonyManager) GatewayApp.getInstance()
        .getSystemService(Context.TELEPHONY_SERVICE);
    Log.d(TAG, "  call state: " + tele.getCallState());
    Log.d(TAG, "  data state: " + tele.getDataState());
    Log.d(TAG, "  network type: " + tele.getNetworkType());

    PhoneState ps = GatewayApp.getInstance().getPhoneStateWrapper()
        .getPhoneState();
    Log.d(TAG, "  phone state: " + ps.state);
    Log.d(TAG, "  signal strength: " + ps.strength);

    return isOn;
  }

  public static void tickleAirplaneMode(IntentService requester) {
    
    Context context = GatewayApp.getInstance();
    Settings.System.putInt(context.getContentResolver(),
        Settings.Global.AIRPLANE_MODE_ON, 1);

    // reload our settings to take effect
    Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
    intent.putExtra("state", true);
    requester.sendBroadcast(intent);

    nap();

    // then toggle back
    Settings.System.putInt(context.getContentResolver(),
        Settings.Global.AIRPLANE_MODE_ON, 0);

    // reload our settings to take effect
    intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
    intent.putExtra("state", false);
    requester.sendBroadcast(intent);

    nap();
  }

  /**
   * Restores our WIFI/DATA state to whatever is in our preference file. No-op
   * if our current state is the same as our preferred state.
   */
  public static void restoreDefaultNetwork() {

    SharedPreferences prefs = PreferenceManager
        .getDefaultSharedPreferences(GatewayApp.getInstance());
    boolean isWifiPreferred = Integer.parseInt(prefs.getString("pref_net",
        "0")) % 2 == 0;
    WifiManager wifi = (WifiManager) GatewayApp.getInstance()
        .getSystemService(Context.WIFI_SERVICE);

    if (wifi.isWifiEnabled() != isWifiPreferred) {
      // toggle back to the preferred network
      wifi.setWifiEnabled(isWifiPreferred);

      nap();
    }
  }

  /**
   * Take a nap. Sleep 30 seconds to give the network hardware a chance to
   * connect or similar.
   */
  private static void nap() {

    try {
      Thread.sleep(30000);
    } catch (Throwable tt) {
    }

  }
}

Java Source Code List

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