java - 如何将 LifecycleOwner 转换到服务类上？

Question

我想使用来自服务类的实时数据选择房间数据库中的数据。如何在观察时转换 LifecycleOwner？

repositoryDatabase.getTimeline().observe(this, timelineList -> {
    if (timelineList != null && timelineList.size() >= 10) {
        JSONArray arrayTimeline = new JSONArray();
        for (TimelineEntity timeline : timelineList) {
            JSONObject objectTimeline = new JSONObject();
            try {
                objectTimeline.put("doku", timeline.getIdDokumen());
                objectTimeline.put("entrydate", timeline.getEntryDate());
                objectTimeline.put("lat", timeline.getLat());
                objectTimeline.put("lng", timeline.getLng());

                arrayTimeline.put(objectTimeline);
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
        onUpdateLocation(arrayTimeline.toString());
    }
});

Answer 1

您可以像这样使用 LifecycleService:

将此依赖项添加到您的 app/build.gradle 文件中:

dependencies {
    implementation "androidx.lifecycle:lifecycle-extensions:2.0.0"
}

使用 LifecycleService 扩展您的服务:

class MyService extends LifecycleService {

    ...
}

之后您将能够观察您的LiveData。