java - 错误: Type 'int[]' of field is not supported | how to add integer list to Realm?

Question

我正在使用 Realm 数据库创建 Realm 对象。我要申报名单integer到我的对象。这是我的课:

@PrimaryKey
private int id;
private String name;
private String image;
private String thumbnail;
private String message;
private int[] genre;
private int[] method;

当我编译它时，出现错误

Error:(12, 8) error: Type 'int[]' of field 'genre' is not supported

这该怎么办？我尝试过 List<Integer>但运气不佳。

然后我意识到Integer对象不扩展 RealmObject所以我不能使用它。

任何想法都会有帮助。谢谢。

Answer 1

What to do with this? I tried with List but no luck. Then i realized that Integer object doesn't extends RealmObject so I cannot use it.

那么，您可以使用 RealmList为此目的:

@PrimaryKey
private int id;
private String name;
private String image;
private String thumbnail;
private String message;
private RealmList<RealmInt> genre;
private RealmList<RealmInt> method;

RealmInt.java

public class RealmInt extends RealmObject {
    private int val;

    public RealmInt() {
    }

    public RealmInt(int val) {
        this.val = val;
    }

    // Getters and setters
}

这就是向 RealmList 添加元素的方法:

RealmList<RealmInt> list = new RealmList<RealmInt>();
in.beginArray();
while (in.hasNext()) {
    list.add(new RealmInt(in.nextInt()));
}

然后您可以调用主RealmObject类的setter并传递list。

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