session-android/src/org/thoughtcrime/securesms/mms/MmsRadio.java

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package org.thoughtcrime.securesms.mms;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.PowerManager;
import android.util.Log;
import org.thoughtcrime.securesms.util.Util;
public class MmsRadio {
private static MmsRadio instance;
public static synchronized MmsRadio getInstance(Context context) {
if (instance == null)
instance = new MmsRadio(context);
return instance;
}
///
private static final String FEATURE_ENABLE_MMS = "enableMMS";
private static final int APN_ALREADY_ACTIVE = 0;
public static final int TYPE_MOBILE_MMS = 2;
private final Context context;
private ConnectivityManager connectivityManager;
private ConnectivityListener connectivityListener;
private PowerManager.WakeLock wakeLock;
private int connectedCounter = 0;
private MmsRadio(Context context) {
PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
this.context = context;
this.connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
this.wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MMS Connection");
this.wakeLock.setReferenceCounted(true);
}
public String getApnInformation() {
return connectivityManager.getNetworkInfo(TYPE_MOBILE_MMS).getExtraInfo();
}
public synchronized void disconnect() {
Log.w("MmsRadio", "MMS Radio Disconnect Called...");
wakeLock.release();
connectedCounter--;
Log.w("MmsRadio", "Reference count: " + connectedCounter);
if (connectedCounter == 0) {
Log.w("MmsRadio", "Turning off MMS radio...");
connectivityManager.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, FEATURE_ENABLE_MMS);
if (connectivityListener != null) {
Log.w("MmsRadio", "Unregistering receiver...");
context.unregisterReceiver(connectivityListener);
connectivityListener = null;
}
}
}
public synchronized void connect() throws MmsRadioException {
int status = connectivityManager.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE,
FEATURE_ENABLE_MMS);
Log.w("MmsRadio", "startUsingNetworkFeature status: " + status);
if (status == APN_ALREADY_ACTIVE) {
wakeLock.acquire();
connectedCounter++;
return;
} else {
wakeLock.acquire();
connectedCounter++;
if (connectivityListener == null) {
IntentFilter filter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
connectivityListener = new ConnectivityListener();
context.registerReceiver(connectivityListener, filter);
}
Util.wait(this, 30000);
if (!isConnected()) {
Log.w("MmsRadio", "Got back from connectivity wait, and not connected...");
disconnect();
throw new MmsRadioException("Unable to successfully enable MMS radio.");
}
}
}
private boolean isConnected() {
NetworkInfo info = connectivityManager.getNetworkInfo(TYPE_MOBILE_MMS);
if ((info == null) || (info.getType() != TYPE_MOBILE_MMS) || !info.isConnected())
return false;
return true;
}
private boolean isConnectivityPossible() {
NetworkInfo networkInfo = connectivityManager.getNetworkInfo(TYPE_MOBILE_MMS);
return networkInfo != null && networkInfo.isAvailable();
}
private boolean isConnectivityFailure() {
NetworkInfo networkInfo = connectivityManager.getNetworkInfo(TYPE_MOBILE_MMS);
return networkInfo == null || networkInfo.getDetailedState() == NetworkInfo.DetailedState.FAILED;
}
private synchronized void issueConnectivityChange() {
if (isConnected()) {
Log.w("MmsRadio", "Notifying connected...");
notifyAll();
return;
}
if (!isConnected() && (isConnectivityFailure() || !isConnectivityPossible())) {
Log.w("MmsRadio", "Notifying not connected...");
notifyAll();
return;
}
}
private class ConnectivityListener extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Log.w("MmsRadio", "Got connectivity change...");
issueConnectivityChange();
}
}
}