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This annotation is used to decorate methods that are to be invoked in an asynchronous way.

Note that the piece of code inside such methods will be automatically protected so to avoid concurrency issues. Though, other parts of the code inside the same class will be not.
In order to prevent unexpected behaviors, it is advisable to avoid using the same class fields (unless immutable) in protected and non-protected code, or to call synchronous methods through the framework as well.
Through this annotation, it is possible to exclude single methods from this kind of protection by indicating them as having a different share group. Each group has a name associated, and every method within a specific group is protected so that shared class members can be safely accessed only from the other methods sharing the same group name. That means that the invocation of methods within the same group cannot happen in parallel. In a dual way, methods belonging to different groups can be invoked in parallel but should not access the same members to avoid concurrency issues.

Finally, be aware that a method might need to be made accessible in order to be called. That means that, in case a java.lang.SecurityManager is installed, a security exception might be raised based on the specific policy implemented.

When used to annotate a class instead of a method, its attributes are applied to all the class methods unless specific values are set in the method annotation.

Remember also that, in order for the annotation to properly work at run time, you will need to add the following rules to your Proguard file (if employing it for shrinking or obfuscation):


         -keepattributes RuntimeVisibleAnnotations

         -keepclassmembers class ** {

Created by davide on 1/26/15.

public @interface Share {

Constant indicating the default share group, that is, all member fields are protected.
    String ALL = "";

Constant indicating that no member field needs to be protected.
    String NONE = "";

The share group name associated with the annotated method.

the group name.
    String value();
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