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
|
/*
This file is part of Subsonic.
Subsonic is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Subsonic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Subsonic. If not, see <http://www.gnu.org/licenses/>.
Copyright 2009 (C) Sindre Mehus
*/
package github.daneren2005.dsub.view;
import android.content.Context;
import android.os.Handler;
import android.os.Looper;
import android.util.Log;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.LinearLayout;
import java.util.ArrayList;
import java.util.List;
import java.util.WeakHashMap;
public class UpdateView extends LinearLayout {
private static final String TAG = UpdateView.class.getSimpleName();
private static final WeakHashMap<UpdateView, ?> INSTANCES = new WeakHashMap<UpdateView, Object>();
private static Handler backgroundHandler;
private static Handler uiHandler;
private static Runnable updateRunnable;
public UpdateView(Context context) {
super(context);
setLayoutParams(new AbsListView.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT));
INSTANCES.put(this, null);
int instanceCount = INSTANCES.size();
if (instanceCount > 50) {
Log.w(TAG, instanceCount + " live UpdateView instances");
}
startUpdater();
}
@Override
public void setPressed(boolean pressed) {
}
private static synchronized void startUpdater() {
if(uiHandler != null) {
return;
}
uiHandler = new Handler();
updateRunnable = new Runnable() {
@Override
public void run() {
updateAll();
}
};
new Thread(new Runnable() {
public void run() {
Looper.prepare();
backgroundHandler = new Handler(Looper.myLooper());
uiHandler.post(updateRunnable);
Looper.loop();
}
}).start();
}
private static void updateAll() {
try {
List<UpdateView> views = new ArrayList<UpdateView>();;
for (UpdateView view : INSTANCES.keySet()) {
if (view.isShown()) {
views.add(view);
}
}
updateAllLive(views);
} catch (Throwable x) {
Log.w(TAG, "Error when updating song views.", x);
}
}
private static void updateAllLive(final List<UpdateView> views) {
final Runnable runnable = new Runnable() {
@Override
public void run() {
try {
for(UpdateView view: views) {
view.update();
}
} catch (Throwable x) {
Log.w(TAG, "Error when updating song views.", x);
}
uiHandler.postDelayed(updateRunnable, 1000L);
}
};
backgroundHandler.post(new Runnable() {
@Override
public void run() {
try {
for(UpdateView view: views) {
view.updateBackground();
}
uiHandler.post(runnable);
} catch (Throwable x) {
Log.w(TAG, "Error when updating song views.", x);
}
}
});
}
protected void updateBackground() {
}
protected void update() {
}
}
|
