android - 将对象传递给其他 Activity

Question

我对将对象发送到其他 Activity 有疑问。我不确定我在做什么。所以我在 MainActivity 中有对象 Player

final Player player = new Player("Player", 150);

我有一个单独的 Player 类，带有简单的构造函数

public class Player {

private String playerName;
private double playerCash;

Player(String playerName, double playerCash)
{
    this.playerName = playerName;
    this.playerCash = playerCash;
}

我有第二个 Activity ，我想在其中使用 Player 对象。我用这段代码在 MainActivity 中做了一个按钮

 mButton = (Button) findViewById(R.id.mButton);
    mButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(MainActivity.this, SecondActivity.class);
            intent.putExtra("player", player);
            startActivity(intent);
        }
    });

现在我遇到了“无法解析方法 putExtra”的问题。我究竟做错了什么？我只想要一个 Player 对象并想在多个 Activity 中使用它，但不知道如何使用。对于任何帮助，非常感谢 ;)

Answer 1

上面答案中提到的所有内容，都非常清楚地描述了解决方案。这是代码:

public class Player implements Parcelable{
private String playerName;
private double playerCash;

    // Constructor
    public Player(String playerName, double playerCash){
        this.playerName = playerName;
        this.playerCash = playerCash;
   }
   // Implement Getter and setter methods


   // Parcelling part
   public Player(Parcel in){
       this.playerName = in.readString();
       this.playerCash = in.readDouble();
   }

   @Оverride
   public int describeContents(){
       return 0;
   }

   @Override
   public void writeToParcel(Parcel dest, int flags) {
      dest.writeString(playerName);
      dest.writeDouble(playerCash);
   }
   public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {
       public Player createFromParcel(Parcel in) {
           return new Player(in); 
       }

       public Player[] newArray(int size) {
           return new Player[size];
       }
   };
}