1 /*
2  * Copyright 2017 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.telephony;
18 
19 import android.annotation.IntDef;
20 import android.annotation.Nullable;
21 import android.annotation.SystemApi;
22 import android.os.RemoteException;
23 import android.telephony.NetworkService.NetworkServiceProvider;
24 
25 import com.android.telephony.Rlog;
26 
27 import java.lang.annotation.Retention;
28 import java.lang.annotation.RetentionPolicy;
29 
30 /**
31  * Network service callback. Object of this class is passed to NetworkServiceProvider upon
32  * calling requestNetworkRegistrationInfo, to receive asynchronous feedback from
33  * NetworkServiceProvider upon onRequestNetworkRegistrationInfoComplete. It's like a wrapper of
34  * INetworkServiceCallback because INetworkServiceCallback can't be a parameter type in public APIs.
35  *
36  * @hide
37  */
38 @SystemApi
39 public class NetworkServiceCallback {
40 
41     private static final String mTag = NetworkServiceCallback.class.getSimpleName();
42 
43     /**
44      * Result of network requests
45      * @hide
46      */
47     @Retention(RetentionPolicy.SOURCE)
48     @IntDef({RESULT_SUCCESS, RESULT_ERROR_UNSUPPORTED, RESULT_ERROR_INVALID_ARG, RESULT_ERROR_BUSY,
49             RESULT_ERROR_ILLEGAL_STATE, RESULT_ERROR_FAILED})
50     public @interface Result {}
51 
52     /** Request is completed successfully */
53     public static final int RESULT_SUCCESS              = 0;
54     /** Request is not support */
55     public static final int RESULT_ERROR_UNSUPPORTED    = 1;
56     /** Request contains invalid arguments */
57     public static final int RESULT_ERROR_INVALID_ARG    = 2;
58     /** Service is busy */
59     public static final int RESULT_ERROR_BUSY           = 3;
60     /** Request sent in illegal state */
61     public static final int RESULT_ERROR_ILLEGAL_STATE  = 4;
62     /** Request failed */
63     public static final int RESULT_ERROR_FAILED         = 5;
64 
65     private final INetworkServiceCallback mCallback;
66 
67     /** @hide */
NetworkServiceCallback(INetworkServiceCallback callback)68     public NetworkServiceCallback(INetworkServiceCallback callback) {
69         mCallback = callback;
70     }
71 
72     /**
73      * Called to indicate result of
74      * {@link NetworkServiceProvider#requestNetworkRegistrationInfo(int, NetworkServiceCallback)}
75      *
76      * @param result Result status like {@link NetworkServiceCallback#RESULT_SUCCESS} or
77      * {@link NetworkServiceCallback#RESULT_ERROR_UNSUPPORTED}
78      * @param state The state information to be returned to callback.
79      */
onRequestNetworkRegistrationInfoComplete(int result, @Nullable NetworkRegistrationInfo state)80     public void onRequestNetworkRegistrationInfoComplete(int result,
81                                                          @Nullable NetworkRegistrationInfo state) {
82         if (mCallback != null) {
83             try {
84                 mCallback.onRequestNetworkRegistrationInfoComplete(result, state);
85             } catch (RemoteException e) {
86                 Rlog.e(mTag, "Failed to onRequestNetworkRegistrationInfoComplete on the remote");
87             }
88         } else {
89             Rlog.e(mTag, "onRequestNetworkRegistrationInfoComplete callback is null.");
90         }
91     }
92 }