blob: a4e5583e1856a93b8b3077ddb063f8b4a96e0f93 (
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
|
import proguard.annotation.*;
/**
* This application illustrates the use of annotations for configuring ProGuard.
*
* You can compile it with:
* javac -classpath ../lib/annotations.jar NativeCallBack.java
* You can then process it with:
* java -jar ../../../lib/proguard.jar @ ../examples.pro
*
* The annotation will preserve the class and its main method,
* as a result of the specifications in lib/annotations.pro.
*/
@KeepApplication
public class NativeCallBack
{
/**
* Suppose this is a native method that computes an answer.
*
* The -keep option for native methods in the regular ProGuard
* configuration will make sure it is not removed or renamed when
* processing this code.
*/
public native int computeAnswer();
/**
* Suppose this method is called back from the above native method.
*
* ProGuard would remove it, because it is not referenced from java.
* The annotation will make sure it is preserved anyhow.
*/
@Keep
public int getAnswer()
{
return 42;
}
/**
* The main entry point of the application.
*
* The @KeepApplication annotation of this class will make sure it is not
* removed or renamed when processing this code.
*/
public static void main(String[] args)
{
int answer = new NativeCallBack().computeAnswer();
System.out.println("The answer is " + answer);
}
}
|