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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/*
* Copyright (C) 2014 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 com.android.server.location;
import com.android.server.ServiceWatcher;
import android.content.Context;
import android.hardware.location.ActivityRecognitionHardware;
import android.hardware.location.IActivityRecognitionHardwareClient;
import android.hardware.location.IActivityRecognitionHardwareWatcher;
import android.os.Handler;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;
/**
* Proxy class to bind GmsCore to the ActivityRecognitionHardware.
*
* @hide
*/
public class ActivityRecognitionProxy {
private static final String TAG = "ActivityRecognitionProxy";
private final ServiceWatcher mServiceWatcher;
private final boolean mIsSupported;
private final ActivityRecognitionHardware mInstance;
private ActivityRecognitionProxy(
Context context,
Handler handler,
boolean activityRecognitionHardwareIsSupported,
ActivityRecognitionHardware activityRecognitionHardware,
int overlaySwitchResId,
int defaultServicePackageNameResId,
int initialPackageNameResId) {
mIsSupported = activityRecognitionHardwareIsSupported;
mInstance = activityRecognitionHardware;
Runnable newServiceWork = new Runnable() {
@Override
public void run() {
bindProvider();
}
};
// prepare the connection to the provider
mServiceWatcher = new ServiceWatcher(
context,
TAG,
"com.android.location.service.ActivityRecognitionProvider",
overlaySwitchResId,
defaultServicePackageNameResId,
initialPackageNameResId,
newServiceWork,
handler);
}
/**
* Creates an instance of the proxy and binds it to the appropriate FusedProvider.
*
* @return An instance of the proxy if it could be bound, null otherwise.
*/
public static ActivityRecognitionProxy createAndBind(
Context context,
Handler handler,
boolean activityRecognitionHardwareIsSupported,
ActivityRecognitionHardware activityRecognitionHardware,
int overlaySwitchResId,
int defaultServicePackageNameResId,
int initialPackageNameResId) {
ActivityRecognitionProxy activityRecognitionProxy = new ActivityRecognitionProxy(
context,
handler,
activityRecognitionHardwareIsSupported,
activityRecognitionHardware,
overlaySwitchResId,
defaultServicePackageNameResId,
initialPackageNameResId);
// try to bind the provider
if (!activityRecognitionProxy.mServiceWatcher.start()) {
Log.e(TAG, "ServiceWatcher could not start.");
return null;
}
return activityRecognitionProxy;
}
/**
* Helper function to bind the FusedLocationHardware to the appropriate FusedProvider instance.
*/
private void bindProvider() {
IBinder binder = mServiceWatcher.getBinder();
if (binder == null) {
Log.e(TAG, "Null binder found on connection.");
return;
}
String descriptor;
try {
descriptor = binder.getInterfaceDescriptor();
} catch (RemoteException e) {
Log.e(TAG, "Unable to get interface descriptor.", e);
return;
}
if (IActivityRecognitionHardwareWatcher.class.getCanonicalName().equals(descriptor)) {
IActivityRecognitionHardwareWatcher watcher =
IActivityRecognitionHardwareWatcher.Stub.asInterface(binder);
if (watcher == null) {
Log.e(TAG, "No watcher found on connection.");
return;
}
if (mInstance == null) {
// to keep backwards compatibility do not update the watcher when there is no
// instance available, or it will cause an NPE
Log.d(TAG, "AR HW instance not available, binding will be a no-op.");
return;
}
try {
watcher.onInstanceChanged(mInstance);
} catch (RemoteException e) {
Log.e(TAG, "Error delivering hardware interface to watcher.", e);
}
} else if (IActivityRecognitionHardwareClient.class.getCanonicalName().equals(descriptor)) {
IActivityRecognitionHardwareClient client =
IActivityRecognitionHardwareClient.Stub.asInterface(binder);
if (client == null) {
Log.e(TAG, "No client found on connection.");
return;
}
try {
client.onAvailabilityChanged(mIsSupported, mInstance);
} catch (RemoteException e) {
Log.e(TAG, "Error delivering hardware interface to client.", e);
}
} else {
Log.e(TAG, "Invalid descriptor found on connection: " + descriptor);
}
}
}
|
