Android EventBus 工具類

DevUtils Github

• EventBus 工具類 -> EventBusUtils.java

方法	註釋
register	註冊 EventBus
unregister	解綁 EventBus
post	發送事件消息
cancelEventDelivery	取消事件傳送
postSticky	發送粘性事件消息
removeStickyEvent	移除指定的粘性訂閱事件
removeAllStickyEvents	移除所有的粘性訂閱事件

package dev.other;

import org.greenrobot.eventbus.EventBus;

/**
 * detail: EventBus 工具類
 * @author Ttt
 * <pre>
 *     eventbus: 註冊後才能接收到該事件
 *     poststicky: 事件消費者在事件發佈之後才註冊也能接收到該事件
 * </pre>
 */
public final class EventBusUtils {

    private EventBusUtils() {
    }

    /**
     * 註冊 EventBus
     * @param subscriber 訂閱者
     */
    public static void register(final Object subscriber) {
        EventBus eventBus = EventBus.getDefault();
        if (!eventBus.isRegistered(subscriber)) {
            eventBus.register(subscriber);
        }
    }

    /**
     * 解綁 EventBus
     * @param subscriber 訂閱者
     */
    public static void unregister(final Object subscriber) {
        EventBus eventBus = EventBus.getDefault();
        if (eventBus.isRegistered(subscriber)) {
            eventBus.unregister(subscriber);
        }
    }

    // =========
    // = Event =
    // =========

    /**
     * 發送事件消息
     * @param event Event
     */
    public static void post(final Object event) {
        EventBus.getDefault().post(event);
    }

    /**
     * 取消事件傳送
     * @param event Event
     */
    public static void cancelEventDelivery(final Object event) {
        EventBus.getDefault().cancelEventDelivery(event);
    }

    // =

    /**
     * 發送粘性事件消息
     * @param event Event
     */
    public static void postSticky(final Object event) {
        EventBus.getDefault().postSticky(event);
    }

    /**
     * 移除指定的粘性訂閱事件
     * @param eventType Event Type
     * @param <T>       泛型
     */
    public static <T> void removeStickyEvent(final Class<T> eventType) {
        T stickyEvent = EventBus.getDefault().getStickyEvent(eventType);
        if (stickyEvent != null) {
            EventBus.getDefault().removeStickyEvent(stickyEvent);
        }
    }

    /**
     * 移除所有的粘性訂閱事件
     */
    public static void removeAllStickyEvents() {
        EventBus.getDefault().removeAllStickyEvents();
    }
}