/**  * Delete the network in the supplicant config.  *  * This function is used instead of a sequence of removeNetwork()  * and saveConfiguration().  *  * @param config the set of variables that describe the configuration,  *      contained in a {@link WifiConfiguration} object.  * @param listener for callbacks on success or failure. Can be null.  * @throws IllegalStateException if the WifiManager instance needs to be  * initialized again  * @hide  */ public void forget(int netId, ActionListener listener) {   if (netId < 0) throw new IllegalArgumentException("Network id cannot be negative");   validateChannel();   sAsyncChannel.sendMessage(FORGET_NETWORK, netId, putListener(listener)); } 

case WifiManager.FORGET_NETWORK:   if (isOwner(msg.sendingUid)) {     mWifiStateMachine.sendMessage(Message.obtain(msg));   } else {     Slog.e(TAG, "Forget is not authorized for user");     replyFailed(msg, WifiManager.FORGET_NETWORK_FAILED,         WifiManager.NOT_AUTHORIZED);   }   break; 

case WifiManager.FORGET_NETWORK:   // Debug only, remember last configuration that was forgotten   WifiConfiguration toRemove       = mWifiConfigStore.getWifiConfiguration(message.arg1);   if (toRemove == null) {     lastForgetConfigurationAttempt = null;   } else {     lastForgetConfigurationAttempt = new WifiConfiguration(toRemove);   }   // check that the caller owns this network   netId = message.arg1;    if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId,       /* onlyAnnotate */ false)) {     logw("Not authorized to forget network "        + " cnid=" + netId        + " uid=" + message.sendingUid);     replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED,         WifiManager.NOT_AUTHORIZED);     break;   }    if (mWifiConfigStore.forgetNetwork(message.arg1)) {     replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED);     broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT,         (WifiConfiguration) message.obj);   } else {     loge("Failed to forget network");     replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED,         WifiManager.ERROR);   }   break; 

/**  * Forget the specified network and save config  *  * @param netId network to forget  * @return {@code true} if it succeeds, {@code false} otherwise  */ boolean forgetNetwork(int netId) {   if (showNetworks) localLog("forgetNetwork", netId);    WifiConfiguration config = mConfiguredNetworks.get(netId);   boolean remove = removeConfigAndSendBroadcastIfNeeded(netId);   if (!remove) {     //success but we dont want to remove the network from supplicant conf file     return true;   }   if (mWifiNative.removeNetwork(netId)) {     if (config != null && config.isPasspoint()) {       writePasspointConfigs(config.FQDN, null);     }     mWifiNative.saveConfig();     writeKnownNetworkHistory(true);     return true;   } else {     loge("Failed to remove network " + netId);     return false;   } }