/**
* Clean up existing voice and data connection then turn off radio power.
*
* <p>Hang up the existing voice calls to decrease call drop rate.
*/
public void powerOffRadioSafely(DcTrackerBase dcTracker) {
synchronized (this) {
if (!mPendingRadioPowerOffAfterDataOff) {
// In some network, deactivate PDP connection cause releasing of RRC connection,
// which MM/IMSI detaching request needs. Without this detaching, network can
// not release the network resources previously attached.
// So we are avoiding data detaching on these networks.
String[] networkNotClearData =
mPhoneBase
.getContext()
.getResources()
.getStringArray(com.android.internal.R.array.networks_not_clear_data);
String currentNetwork = mSS.getOperatorNumeric();
if ((networkNotClearData != null) && (currentNetwork != null)) {
for (int i = 0; i < networkNotClearData.length; i++) {
if (currentNetwork.equals(networkNotClearData[i])) {
// Don't clear data connection for this carrier
if (DBG) log("Not disconnecting data for " + currentNetwork);
hangupAndPowerOff();
return;
}
}
}
// To minimize race conditions we call cleanUpAllConnections on
// both if else paths instead of before this isDisconnected test.
if (dcTracker.isDisconnected()) {
// To minimize race conditions we do this after isDisconnected
dcTracker.cleanUpAllConnections(Phone.REASON_RADIO_TURNED_OFF);
if (DBG) log("Data disconnected, turn off radio right away.");
hangupAndPowerOff();
} else {
dcTracker.cleanUpAllConnections(Phone.REASON_RADIO_TURNED_OFF);
Message msg = Message.obtain(this);
msg.what = EVENT_SET_RADIO_POWER_OFF;
msg.arg1 = ++mPendingRadioPowerOffAfterDataOffTag;
if (sendMessageDelayed(msg, 30000)) {
if (DBG) log("Wait upto 30s for data to disconnect, then turn off radio.");
mPendingRadioPowerOffAfterDataOff = true;
} else {
log("Cannot send delayed Msg, turn off radio right away.");
hangupAndPowerOff();
}
}
}
}
}
