priority 數值越大優先順序又高

		
	// MainActivity
	@Subscribe(priority = 2)
    public void onMessageEvent(MessageEvent event) {
        Toast.makeText(this, event.message, Toast.LENGTH_SHORT).show();
    }

	// SecondActivity
	@Subscribe(priority = 1)
    public void onMessageSecondEvent(MessageEvent event) {
        Toast.makeText(this, event.message, Toast.LENGTH_SHORT).show();
    }	
		
		

時間攔截，MainActivity 收到信息後調用 EventBus.getDefault().cancelEventDelivery(event); 之後所有訂閲將收不到信息。

		
	// MainActivity
	@Subscribe(priority = 2)
    public void onMessageEvent(MessageEvent event) {
        Toast.makeText(this, event.message, Toast.LENGTH_SHORT).show();
        EventBus.getDefault().cancelEventDelivery(event);
    }

	// SecondActivity
	@Subscribe(priority = 1)
    public void onMessageSecondEvent(MessageEvent event) {
        Toast.makeText(this, event.message, Toast.LENGTH_SHORT).show();
    }