blob: 076393e631f64d8a8412dffc7e61d6c72b16e4ed (
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
|
/*
* Copyright (C) 2017 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.dialer.constants;
import android.support.annotation.NonNull;
import com.android.dialer.common.Assert;
import com.android.dialer.proguard.UsedByReflection;
/**
* Utility to access constants that are different across build variants (Google Dialer, AOSP,
* etc...). This functionality depends on a an implementation being present in the app that has the
* same package and the class name ending in "Impl". For example,
* com.android.dialer.constants.ConstantsImpl. This class is found by the module using reflection.
*/
@UsedByReflection(value = "Constants.java")
public abstract class Constants {
private static Constants instance;
private static boolean didInitializeInstance;
@NonNull
public static synchronized Constants get() {
if (!didInitializeInstance) {
didInitializeInstance = true;
try {
Class<?> clazz = Class.forName(Constants.class.getName() + "Impl");
instance = (Constants) clazz.getConstructor().newInstance();
} catch (ReflectiveOperationException e) {
Assert.fail(
"Unable to create an instance of ConstantsImpl. To fix this error include one of the "
+ "constants modules (googledialer, aosp etc...) in your target.");
}
}
return instance;
}
@NonNull
public abstract String getFilteredNumberProviderAuthority();
@NonNull
public abstract String getFileProviderAuthority();
@NonNull
public abstract String getAnnotatedCallLogProviderAuthority();
protected Constants() {}
}
|