无法解决“Parcelable 遇到写入可序列化对象的 IOException”

Posted 2023-03-30

【中文标题】无法解决“Parcelable 遇到写入可序列化对象的 IOException”

【英文标题】：Can't solve "Parcelable encountered IOException writing serializable object"

【发布时间】：2020-02-10 07:03:52

【问题描述】：

java.lang.RuntimeException: Parcelable遇到IOException写 可序列化对象（名称 = com.luzian.recipeapp.Recipe）

我已经搜索过这个问题的答案，但似乎都可以通过让两个类从 Serializable 实现（我正在这样做）来解决，但没有成功。

我的两班菜谱和配料：

public class Recipe implements Serializable

    private String name;
    private String time;
    private String instructions;
    private ArrayList<Ingredient> ingredients;

    public Recipe(String name, String time, String instructions, ArrayList<Ingredient> ingredients)
    
        this.name = name;
        this.time = time;
        this.instructions = instructions;
        this.ingredients = ingredients;
    



public class Ingredient implements Serializable

    private String value;
    private String unit;
    private String name;

    public Ingredient(String value, String unit, String name)
    
        this.value = value;
        this.unit = unit;
        this.name = name;
    

开始新的活动：

Intent intent = new Intent(context, RecipeDisplayActivity.class);
intent.putExtra("recipe", recipes.get(position));     // recipes.get(position) returns a Recipe object
context.startActivity(intent);

【问题讨论】：

你试过实现 Parcelable 吗？

@Swayangjit 谢谢！通过实现 Parcelable 而不是 Serializable 我让它工作了。

【参考方案1】：

我将 Serializable 更改为 Parcelable 并覆盖了所需的方法 - 现在它可以工作了！

感谢@Swayangjit

public class Recipe implements Parcelable

    private String name;
    private String time;
    private String instructions;
    private ArrayList<Ingredient> ingredients;

    public Recipe(String name, String time, String instructions, ArrayList<Ingredient> ingredients)
    
        this.name = name;
        this.time = time;
        this.instructions = instructions;
        this.ingredients = ingredients;
    


    protected Recipe(Parcel in)
    
        name = in.readString();
        time = in.readString();
        instructions = in.readString();
        ingredients = in.readArrayList(Ingredient.class.getClassLoader());
    

    public static final Creator<Recipe> CREATOR = new Creator<Recipe>()
    
        @Override
        public Recipe createFromParcel(Parcel in)
        
            return new Recipe(in);
        

        @Override
        public Recipe[] newArray(int size)
        
            return new Recipe[size];
        
    ;

    @Override
    public int describeContents()
    
        return 0;
    

    @Override
    public void writeToParcel(Parcel dest, int flags)
    
        dest.writeString(name);
        dest.writeString(time);
        dest.writeString(instructions);
        dest.writeList(ingredients);
    



public class Ingredient implements Parcelable

    private String value;
    private String unit;
    private String name;

    public Ingredient(String value, String unit, String name)
    
        this.value = value;
        this.unit = unit;
        this.name = name;
    

    protected Ingredient(Parcel in)
    
        value = in.readString();
        unit = in.readString();
        name = in.readString();
    

    public static final Creator<Ingredient> CREATOR = new Creator<Ingredient>()
    
        @Override
        public Ingredient createFromParcel(Parcel in)
        
            return new Ingredient(in);
        

        @Override
        public Ingredient[] newArray(int size)
        
            return new Ingredient[size];
        
    ;

    @Override
    public int describeContents()
    
        return 0;
    

    @Override
    public void writeToParcel(Parcel dest, int flags)
    
        dest.writeString(value);
        dest.writeString(unit);
        dest.writeString(name);