AnotherTypedEvent.java

package com.example.zhangbog.dexcounttest;

public class AnotherTypedEvent implements ITypedEvent<AnotherTypedEvent.EventType>
{
    private final EventType eventType;

    static enum EventType
    {
        CC, DD
    }

    public AnotherTypedEvent(EventType eventType)
    {
        this.eventType = eventType;
    }

    @Override
    public EventType getType()
    {
        return this.eventType;
    }

    @Override
    public boolean isBlocking()
    {
        return false;
    }
}

IEvent.java

package com.example.zhangbog.dexcounttest;

public interface IEvent
{
    boolean isBlocking();
}

ITypedEvent.java

package com.example.zhangbog.dexcounttest;

public interface ITypedEvent<T extends Enum> extends IEvent
{
    T getType();
}

SomeTypedEvent.java

package com.example.zhangbog.dexcounttest;

public class SomeTypedEvent implements ITypedEvent<SomeTypedEvent.EventType>
{
    private final EventType eventType;

    static enum EventType{AA,BB}

    public SomeTypedEvent(EventType eventType)
    {
        this.eventType = eventType;
    }
    @Override
    public EventType getType()
    {
        return this.eventType;
    }

    @Override
    public boolean isBlocking()
    {
        return false;
    }
}