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/*
* Copyright (C) 2018 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.service.carrier;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.SystemApi;
import android.annotation.WorkerThread;
import android.app.Service;
import android.content.ContentValues;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;
import android.service.carrier.IApnSourceService;
import java.util.List;
/**
* A service that the system can call to restore default APNs.
* <p>
* To extend this class, specify the full name of your implementation in the resource file
* {@code packages/providers/TelephonyProvider/res/values/config.xml} as the
* {@code apn_source_service}.
* </p>
*
* @hide
*/
@SystemApi
public abstract class ApnService extends Service {
private static final String LOG_TAG = "ApnService";
private final IApnSourceService.Stub mBinder = new IApnSourceService.Stub() {
/**
* Retreive APNs for the default slot index.
*/
@Override
public ContentValues[] getApns(int subId) {
try {
List<ContentValues> apns = ApnService.this.onRestoreApns(subId);
return apns.toArray(new ContentValues[apns.size()]);
} catch (Exception e) {
Log.e(LOG_TAG, "Error in getApns for subId=" + subId + ": " + e.getMessage(), e);
return null;
}
}
};
@Override
@NonNull
public IBinder onBind(@Nullable Intent intent) {
return mBinder;
}
/**
* Override this method to restore default user APNs with a carrier service instead of the
* built in platform xml APNs list.
* <p>
* This method is called by the TelephonyProvider when the user requests restoring the default
* APNs. It should return a list of ContentValues representing the default APNs for the given
* subId.
*/
@WorkerThread
@NonNull
public abstract List<ContentValues> onRestoreApns(int subId);
}
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