Question

我想从Firebase中提取数据，我有两个数字类型的字段，这些字段导致我出现兼容性问题

数字以外的其他字符数据起作用

package fr.halas.loginhalas.Filter;

import com.google.firebase.firestore.IgnoreExtraProperties;

@IgnoreExtraProperties
public class Affichage {


    public static final String FIELD_CREATOR_NAME = "CreatorName";
    public static final String FIELD_USERID = "UserID";
    public static final String FIELD_MODULE = "Module";
    public static final String FIELD_SECTION = "Section";
    public static final String FIELD_GROUPE = "Groupe";


    private String CreatorName;
    private String Module;
    private String UserID;
    private long Section;
    private long Groupe;



    public Affichage(String CreatorName,String UserID,String Module, long Section, long Groupe) {
        this.CreatorName = CreatorName;
        this.UserID = UserID;
        this.Module = Module;
        this.Section = Section;
        this.Groupe = Groupe;
    }

    public Affichage() {
        // empty default constructor, necessary for Firebase to be able to deserialize users
    }

    public String getCreatorName() {
        return CreatorName;
    }

    public void setCreatorName(String creatorName) {
        CreatorName = creatorName;
    }

    public String getModule() {
        return Module;
    }

    public void setModule(String module) {
        Module = module;
    }

    public String getUserID() {
        return UserID;
    }

    public void setUserID(String userID) {
        UserID = userID;
    }

    public long getSection() {
        return Section;
    }

    public void setSection(long section) {
        Section = section;
    }

    public long getGroupe() {
        return Groupe;
    }

    public void setGroupe(long groupe) {
        Groupe = groupe;
    }


}

  @SuppressLint("SetTextI18n")
        public void bind(final DocumentSnapshot snapshot, final OnAffichageSelectedListener listener) {

            final Affichage affichage = snapshot.toObject(Affichage.class); // Error is here ! 

            creator.setText(affichage.getCreatorName());
            moduleView.setText(affichage.getModule());
            groupeView.setText("Groupe: " + affichage.getGroupe());
            sectionView.setText("Section: " + affichage.getSection());

错误消息是 05-10 18：00：36.850 19488-19488 / fr.halas.loginhalas E / Android运行时：致命异常：主要工艺：fr.halas.loginhalas，PID：19488 java.lang.RuntimeException：无法反序列化对象。无法将类型为java.lang.String的值转换为long（在“ Groupe”字段中找到）

Answer 1

在我的手机上完全删除该应用程序并重新启动编译后，它可以正常启动且没有错误，该应用程序必须提供无效的缓存

Answer 2

这两行：

    groupeView.setText("Groupe: " + affichage.getGroupe());
    sectionView.setText("Section: " + affichage.getSection());

应为：

    groupeView.setText("Groupe: " + Long.toString(affichage.getGroupe());
    sectionView.setText("Section: " + Long.toString(affichage.getSection());

无法反序列化对象。无法将类型java.lang.String的值转换为long

2 个答案: