blob: d65e633731aafce057ca99f7137cdaf6e50de243 (
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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/*
* Copyright (C) 2013 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.incallui;
import com.google.common.base.Preconditions;
import android.os.Handler;
import android.os.SystemClock;
/**
* Helper class used to keep track of events requiring regular intervals.
*/
public class CallTimer extends Handler {
private Runnable mInternalCallback;
private Runnable mCallback;
private long mLastReportedTime;
private long mInterval;
private boolean mRunning;
public CallTimer(Runnable callback) {
Preconditions.checkNotNull(callback);
mInterval = 0;
mLastReportedTime = 0;
mRunning = false;
mCallback = callback;
mInternalCallback = new CallTimerCallback();
}
public boolean start(long interval) {
if (interval <= 0) {
return false;
}
// cancel any previous timer
cancel();
mInterval = interval;
mLastReportedTime = SystemClock.uptimeMillis();
mRunning = true;
periodicUpdateTimer();
return true;
}
public void cancel() {
removeCallbacks(mInternalCallback);
mRunning = false;
}
private void periodicUpdateTimer() {
if (!mRunning) {
return;
}
final long now = SystemClock.uptimeMillis();
long nextReport = mLastReportedTime + mInterval;
while (now >= nextReport) {
nextReport += mInterval;
}
postAtTime(mInternalCallback, nextReport);
mLastReportedTime = nextReport;
// Run the callback
mCallback.run();
}
private class CallTimerCallback implements Runnable {
@Override
public void run() {
periodicUpdateTimer();
}
}
}
|
