blob: 263e012cd014939a1de138ea1c19077559f9e6bf (
plain)
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
|
package com.wireguard.android;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import java.util.ArrayList;
import java.util.List;
/**
* Base class for activities that maintain a connection to a background service.
*/
abstract class ServiceClientActivity<T> extends Activity implements ServiceConnectionProvider<T> {
private final ServiceConnectionCallbacks callbacks = new ServiceConnectionCallbacks();
private final List<ServiceConnectionListener<T>> listeners = new ArrayList<>();
private T service;
private final Class<?> serviceClass;
protected ServiceClientActivity(Class<?> serviceClass) {
this.serviceClass = serviceClass;
}
@Override
public void addServiceConnectionListener(ServiceConnectionListener<T> listener) {
listeners.add(listener);
}
public T getService() {
return service;
}
@Override
public void onStart() {
super.onStart();
bindService(new Intent(this, serviceClass), callbacks, Context.BIND_AUTO_CREATE);
}
@Override
public void onStop() {
super.onStop();
if (service != null) {
service = null;
unbindService(callbacks);
for (ServiceConnectionListener listener : listeners)
listener.onServiceDisconnected();
}
}
@Override
public void removeServiceConnectionListener(ServiceConnectionListener<T> listener) {
listeners.remove(listener);
}
private class ServiceConnectionCallbacks implements ServiceConnection {
@Override
public void onServiceConnected(ComponentName component, IBinder binder) {
@SuppressWarnings("unchecked")
final T localBinder = (T) binder;
service = localBinder;
for (ServiceConnectionListener<T> listener : listeners)
listener.onServiceConnected(service);
}
@Override
public void onServiceDisconnected(ComponentName component) {
service = null;
for (ServiceConnectionListener<T> listener : listeners)
listener.onServiceDisconnected();
}
}
}
|
