1 /*
2  * Copyright (C) 2016 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 com.android.tv.util.account;
18 
19 import android.accounts.Account;
20 import android.support.annotation.Nullable;
21 
22 /** Helper methods for getting and selecting a user account. */
23 public interface AccountHelper {
24     /** Returns the currently selected account or {@code null} if none is selected. */
25     @Nullable
getSelectedAccount()26     Account getSelectedAccount();
27     /**
28      * Selects the first account available.
29      *
30      * @return selected account or {@code null} if none is selected.
31      */
32     @Nullable
selectFirstAccount()33     Account selectFirstAccount();
34 
35     /** Returns all eligible accounts . */
36     @Nullable
getFirstEligibleAccount()37     Account getFirstEligibleAccount();
38 
39     /**
40      * Initialize the account helper.
41      *
42      * <p>This method is a no op if called more than once.
43      */
init()44     void init();
45 }
46