我有一个名为 Player 的类,其中有三个变量,其中一个是具有十个值的字符串数组 (playerInv)。我如何使用这个 Player 类在我的主 Activity 类中创建一个新的 Player,数组中的每个索引都有一个空值 ("")?
玩家类:
public class Player {
private int playerPos;
private int playerHP;
private String playerInv[];
Player(int startPos, int startHP, String[] newInventory[]) {
playerPos = startPos;
playerHP = startHP;
playerInv = newInventory[10];
}
public int getPlayerPos() {
return playerPos;
}
public void setPlayerPos(int playerPos) {
this.playerPos = playerPos;
}
public int getPlayerHP() {
return playerHP;
}
public void setPlayerHP(int playerHP) {
this.playerHP = playerHP;
}
public String setPlayerInv(int pos) {
return playerInv[pos];
}
public void setPlayerInv(String inventory) {
for (int i = 0; i < 10; i++) {
this.playerInv[i] = playerInv[i];
}
}
}
在主 Activity 中初始化播放器
public void setupPlayer()
{
thePlayer = new Player(0,100,);
}
谢谢!
最佳答案
一开始,您的类构造函数中存在错误。 如果你想获取 String 数组作为构造函数参数,它应该看起来像这样:
Player(int startPos, int startHP, String[] newInventory)
{
playerPos = startPos;
playerHP = startHP;
playerInv = newInventory;
}
或者它应该看起来像这样,如果您希望 playerInv
始终是一个大小为 10 的字符串数组。
Player(int startPos, int startHP)
{
playerPos = startPos;
playerHP = startHP;
playerInv = new String[10];
}
然后您创建一个新的 Player
对象,方法很简单:
thePlayer = new Player(0, 100);
重要的是,在第二种情况下,playerInv 变量将包含对填充为空的 String 类型数组的引用。所以表格看起来像这样:
[null, null, null, null, null, null, null, null, null, null]
如果你想要一个数组填充空字符串 ("") 值,如下所示:
["","","","","","","","","",""]
那么你至少还有两种方法可以做到这一点:
Player(int startPos, int startHP)
{
playerPos = startPos;
playerHP = startHP;
playerInv = new String[10];
Arrays.fill(playerInv, "");
}
或者你可以使用这个构造函数:
Player(int startPos, int startHP, String[] newInventory)
{
playerPos = startPos;
playerHP = startHP;
playerInv = newInventory;
}
并在创建新的 Player
对象时执行此操作:
String[] inventory = new String[10];
Arrays.fill(inventory, "");
Player thePlayer = new Player(0, 100, inventory);
关于java - 尝试使用字符串数组从类创建新对象,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34796898/