1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/*
* Copyright (C) 2019 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.content.pm;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.os.RemoteException;
/**
* Data loader manager takes care of data loaders of different packages. It provides methods to
* initialize a data loader binder service (binding and creating it), to return a binder of the data
* loader binder service and to destroy a data loader binder service.
* @see com.android.server.pm.DataLoaderManagerService
* @hide
*/
public class DataLoaderManager {
private static final String TAG = "DataLoaderManager";
private final IDataLoaderManager mService;
public DataLoaderManager(IDataLoaderManager service) {
mService = service;
}
/**
* Finds a data loader binder service and binds to it. This requires PackageManager.
*
* @param dataLoaderId ID for the new data loader binder service.
* @param params DataLoaderParamsParcel object that contains data loader params, including
* its package name, class name, and additional parameters.
* @param bindDelayMs introduce a delay before actual bind in case we want to avoid busylooping
* @param listener Callback for the data loader service to report status back to the
* caller.
* @return false if 1) target ID collides with a data loader that is already bound to data
* loader manager; 2) package name is not specified; 3) fails to find data loader package;
* or 4) fails to bind to the specified data loader service, otherwise return true.
*/
public boolean bindToDataLoader(int dataLoaderId, @NonNull DataLoaderParamsParcel params,
long bindDelayMs, @NonNull IDataLoaderStatusListener listener) {
try {
return mService.bindToDataLoader(dataLoaderId, params, bindDelayMs, listener);
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
/**
* Returns a binder interface of the data loader binder service, given its ID.
*/
@Nullable
public IDataLoader getDataLoader(int dataLoaderId) {
try {
return mService.getDataLoader(dataLoaderId);
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
/**
* Unbinds from a data loader binder service, specified by its ID.
* DataLoader will receive destroy notification.
*/
@Nullable
public void unbindFromDataLoader(int dataLoaderId) {
try {
mService.unbindFromDataLoader(dataLoaderId);
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
}
|
