此Realm的架构中缺少该类 [英] The class is missing from the schema for this Realm

问题描述

• Android studio 2.3.3


• Realm 3.5.0

public RealmController(Context context) {
    try {
        this.context = context;
        Realm.init(context);
        PrintLog("RealmController", "RealmController", "Init realm", LOG_LEVEL_INFO);
        realmInstance = Realm.getDefaultInstance();
        PrintLog("RealmController", "RealmController", "Getting realm instance", LOG_LEVEL_INFO);
    }
    catch (Exception err) {
        PrintLog("RealmController", "RealmController", "Error: " + err.getMessage(), LOG_LEVEL_ERROR);
    }
}

SellingData.java

SellingData.java

public class SellingDataTable extends RealmObject {

    public Date todaysDate;
    public int sellingData;

    public Date getTodaysDate() {
        return todaysDate;
    }
    public void setTodaysDate(Date todaysDate) {
        this.todaysDate = todaysDate;
    }
    public int getSellingData() {
        return sellingData;
    }
    public void setSellingData(int sellingData) {
        this.sellingData = sellingData;
    }
}

预期行为

• 获取领域默认实例。



会崩溃。

08-09 15:24:16.044 [I2maxMain] {Init} (preparing ui)
08-09 15:24:16.120 [RealmController] {RealmController} (Init realm)
08-09 15:24:16.129 [RealmController] {RealmController} (Error: The 'SellingDataTable' class is missing from the schema for this Realm.)




推荐答案

如果您在设备上创建具有给定架构的Realm，那么如果您开始修改架构（通过添加新类，添加新字段，删除字段，添加/删除 @Index ，添加/删除 @Required ，更改类型等等）然后您需要提供迁移（例如这里），或者你需要指定 deleteIfMigrationNeeded（）。

If you create a Realm with a given schema on the device, then if you start modifying the schema (by adding new classes, adding new fields, removing fields, adding/removing @Index, adding/removing @Required, changing a type, etc.) then you either need to provide a migration (example here), or you need to specify deleteIfMigrationNeeded() on your RealmConfiguration.

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