Android。将 RealmObject 与数据绑定一起使用

Question

我正在为 databinding 使用 RealmObject 模型。它运行良好，但现在我希望在数据更改时更新我的视图，并且我实现了 Observable.

型号是：

public class RealmArticle extends RealmObject implements Observable {

    public RealmArticle() {
    }

    private PropertyChangeRegistry registry =
            new PropertyChangeRegistry();

    @Bindable
    public String getCountText() {
        return countText;
    }

    public void setCountText(String countText) {
        this.countText = countText;
        registry.notifyChange(this, BR.obj);
    }

    @Override
    public void addOnPropertyChangedCallback(OnPropertyChangedCallback callback) {
        registry.add(callback);
    }

    @Override
    public void removeOnPropertyChangedCallback(OnPropertyChangedCallback callback) {
        registry.remove(callback);
    }
}

问题是 RealmObject 不支持 PropertyChangeRegistry 类型的字段。

Android 工作室说：Error:(18, 8) error: Field "registry" of type "android.databinding.PropertyChangeRegistry" is not supported.

有没有办法在不违反 RealmObject 功能的情况下实现此接口？

Answer 1

向该字段添加 Ignore 注释就足够了。

Answer 2

喜欢documentation of RealmObject状态

An annotation processor will create a proxy class for your RealmObject subclass. The following field data types are supported:

boolean/Boolean

short/Short

int/Integer

long/Long

float/Float

double/Double

byte[]

String

Date

Any RealmObject subclass

RealmList

Fields annotated with Ignore don't have these restrictions and don't require either a getter or setter.

像这样，您可以从代理生成中省略该字段。

或者您可以使用 transient Java 关键字来实现同样的效果。

Android。将 RealmObject 与数据绑定一起使用

Android. Using the RealmObject with Databinding

android

realm

android-databinding