Question

我想知道如何从不同的@EventHandler获取变量。我在这个实例中的变量是一个数组列表。

我的代码如下：

@EventHandler
public void onBlockBreak(BlockBreakEvent event) {
    ArrayList<String> build = new ArrayList();
    Player player = event.getPlayer();
    if(!player.isOp()) {
        event.setCancelled(true);
    }else if(!build.contains(player)) {
        event.setCancelled(true);
    }else if(build.contains(player)) {
        event.setCancelled(false);
    }
}
@EventHandler
public void onPlayerJoin(PlayerJoinEvent event) {
    Player player = event.getPlayer();
    event.setJoinMessage("§4§l>>§a§l " + player + " §b§ljoined! §4§l<<");
    if(build.contains(player)) {
        build.remove(player);

现在，在第二个@EventHandler上，它无法解析变量＆＃34; build＆＃34;这是我在之前的@EventHandler中定义的内容。那我怎么能这样做呢？

Answer 1

build是一个局部变量，仅在onBlockBreak(BlockBreakEvent event)方法中可用。

你想要做的是在方法之外声明一个变量，并用它的onEnable()方法初始化它。您还应该执行KingFaris10所提到的并存储播放器的UUID。您还需要将玩家添加到ArrayList。

private ArrayList<UUID> build;
@Override
public void onEnable () {
    build = new ArrayList<UUID>();
}

@EventHandler
public void onBlockBreak(BlockBreakEvent event) {
    Player player = event.getPlayer();
    //Following derived from KingFaris10
    if (!player.isOp() || !build.contains(player.getUUID())) event.setCancelled(true);
    else event.setCancelled(false);
}
@EventHandler
public void onPlayerJoin(PlayerJoinEvent event) {
    Player player = event.getPlayer();
    event.setJoinMessage("§4§l>>§a§l " + player + " §b§ljoined! §4§l<<");
    UUID id = player.getUUID();
    if(build.contains(id)) {
        build.remove(id);

Bukkit - 从其他@EventHandlers获取变量？

1 个答案: