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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.telephony;
import android.content.Context;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.util.Log;
import com.android.internal.telephony.ITelephony;
/**
* Allows applications to request the system to perform a network scan.
*
* The caller of {@link #requestNetworkScan(NetworkScanRequest, NetworkScanCallback)} will
* receive a NetworkScan which contains the callback method to stop the scan requested.
* @hide
*/
public class NetworkScan {
public static final String TAG = "NetworkScan";
// Below errors are mapped from RadioError which is returned from RIL. We will consolidate
// RadioErrors during the mapping if those RadioErrors mean no difference to the users.
public static final int SUCCESS = 0; // RadioError:NONE
public static final int ERROR_MODEM_ERROR = 1; // RadioError:RADIO_NOT_AVAILABLE
// RadioError:NO_MEMORY
// RadioError:INTERNAL_ERR
// RadioError:MODEM_ERR
// RadioError:OPERATION_NOT_ALLOWED
public static final int ERROR_INVALID_SCAN = 2; // RadioError:INVALID_ARGUMENTS
public static final int ERROR_MODEM_BUSY = 3; // RadioError:DEVICE_IN_USE
public static final int ERROR_UNSUPPORTED = 4; // RadioError:REQUEST_NOT_SUPPORTED
// Below errors are generated at the Telephony.
public static final int ERROR_RIL_ERROR = 10000; // Nothing or only exception is
// returned from RIL.
public static final int ERROR_INVALID_SCANID = 10001; // The scanId is invalid. The user is
// either trying to stop a scan which
// does not exist or started by others.
public static final int ERROR_INTERRUPTED = 10002; // Scan was interrupted by another scan
// with higher priority.
private final int mScanId;
private final int mSubId;
/**
* Stops the network scan
*
* This is the callback method to stop an ongoing scan. When user requests a new scan,
* a NetworkScan object will be returned, and the user can stop the scan by calling this
* method.
*/
public void stop() throws RemoteException {
try {
ITelephony telephony = getITelephony();
if (telephony != null) {
telephony.stopNetworkScan(mSubId, mScanId);
} else {
throw new RemoteException("Failed to get the ITelephony instance.");
}
} catch (RemoteException ex) {
Rlog.e(TAG, "stopNetworkScan RemoteException", ex);
throw new RemoteException("Failed to stop the network scan with id " + mScanId);
}
}
/**
* Creates a new NetworkScan with scanId
*
* @param scanId The id of the scan
* @param subId the id of the subscription
* @hide
*/
public NetworkScan(int scanId, int subId) {
mScanId = scanId;
mSubId = subId;
}
private ITelephony getITelephony() {
return ITelephony.Stub.asInterface(
ServiceManager.getService(Context.TELEPHONY_SERVICE));
}
}
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