无法使用 GSON 将 class 转换为 JSON

Question

当我尝试将 Android 应用程序中的对象转换为 Json 时，出现以下错误：

class android.content.res.ColorStateList declares multiple JSON fields named mChangingConfigurations

问题是在某些设备中所有设备都在工作 GSON 版本：

implementation 'com.google.code.gson:gson:2.9.0'
implementation 'com.squareup.retrofit2:converter-gson:2.9.0'

虽然我尝试转换对象的代码如下：

Comanda comanda = new Comanda(
                    tasto.getDescriptionReceipt(),
                    quantitaSelezionata,
                    tasto.getCodice(),
                    turnoValue,
                    currentTimeString,
                    operatore,
                    "A",
                    String.valueOf(tasto.getPrice()));
            intent.putExtra("prodotto", new Gson().toJson(comanda));

Comanda class 看起来像这样：

public class Comanda {

    private final String descProdotto;
    private double qta;
    private int turno;
    private String codice;
    private String time;
    private String codOP;
    private String state;
    private String pre;
    private ArrayList<Varianti> variants = new ArrayList<>();


    public Comanda(String button, double qta, String codice, int turno, String time, String codOP, String state, String pre) {
        this.descProdotto = button;
        this.qta = qta;
        this.codice = codice;
        this.turno = turno;
        this.time = time;
        this.codOP = codOP;
        this.state = state;
        this.pre = pre;
    }

}

public class Varianti implements Serializable {

    String name;
    private String codice;
    BitmapDrawable drawable;
    private String state;
    public String pre;
    public String qta;

    public Varianti(String name, String codice, BitmapDrawable drawable, String state, String pre, String qta) {
        this.name = name;
        this.codice = codice;
        this.drawable = drawable;
        this.state = state;
        this.pre = pre;
        this.qta = qta;
    }
}

欢迎使用 kotlin 中的任何解决方案

Answer 1

我认为问题出在 Varianti bean，它有一个属性 BitmapDrawable 。当你使用Gson将其转换为字符串时，你不应该处理它。

ublic class Varianti implements Serializable {

    String name;
    private String codice;
    private transient BitmapDrawable drawable;
    private String state;
    public String pre;
    public String qta;

    public Varianti(String name, String codice, BitmapDrawable drawable, String state, String pre, String qta) {
        this.name = name;
        this.codice = codice;
        this.drawable = drawable;
        this.state = state;
        this.pre = pre;
        this.qta = qta;
    }
}

无法使用 GSON 将 class 转换为 JSON

Unable to convert class to JSON using GSON

java

android

kotlin

gson