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
|
/*
* 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.timezone;
import android.annotation.NonNull;
import android.annotation.Nullable;
import com.android.internal.annotations.GuardedBy;
import java.util.Objects;
/**
* A class that can be used to find time zones using information like country and offset.
*
* @hide
*/
public final class TimeZoneFinder {
private static final Object sLock = new Object();
@GuardedBy("sLock")
private static TimeZoneFinder sInstance;
/**
* Obtains the singleton instance.
*/
@NonNull
public static TimeZoneFinder getInstance() {
synchronized (sLock) {
if (sInstance == null) {
sInstance = new TimeZoneFinder(com.android.i18n.timezone.TimeZoneFinder
.getInstance());
}
}
return sInstance;
}
@NonNull
private final com.android.i18n.timezone.TimeZoneFinder mDelegate;
private TimeZoneFinder(@NonNull com.android.i18n.timezone.TimeZoneFinder delegate) {
mDelegate = Objects.requireNonNull(delegate);
}
/**
* Returns the IANA rules version associated with the data. If there is no version information
* or there is a problem reading the file then {@code null} is returned.
*/
@Nullable
public String getIanaVersion() {
return mDelegate.getIanaVersion();
}
/**
* Returns a {@link CountryTimeZones} object associated with the specified country code.
* Caching is handled as needed. If the country code is not recognized or there is an error
* during lookup this method can return null.
*/
@Nullable
public CountryTimeZones lookupCountryTimeZones(@NonNull String countryIso) {
com.android.i18n.timezone.CountryTimeZones delegate = mDelegate
.lookupCountryTimeZones(countryIso);
return delegate == null ? null : new CountryTimeZones(delegate);
}
}
|
