从realm.io读取并添加到listview [英] Read from realm.io and add to listview

问题描述

我想使用 Realm.io 保存数据，然后在列表视图中显示每个项目。
这是我如何创建数据库（我想）：

I want to use Realm.io to save data and then display each item in a listview. Here is how I have create the database (I think):

config = new RealmConfiguration.Builder(this)
            .name("timeLog")
            .schemaVersion(42)
            .build();

realm.setDefaultConfiguration(config);

然后，当我保存我的数据时，我执行以下操作：

Then after this when I save my data I do the following:

    Realm realm = Realm.getDefaultInstance();
    realm.beginTransaction();
    timeData logTime = realm.createObject(timeData.class);
    logTime.setWorkedHours(timeTotal);
    realm.commitTransaction();
    System.out.println(logTime);
    System.out.println(logTime.getId());

现在我想将它添加到数组中，并将其显示在列表视图中。
所以我想我可以这样做：

And now I want to add this to an array maybe and display it in a listview. So I thought i could make something like this:

RealmResults<timeData> result = realm.where(timeData.class).findAll();
    result = result.sort("sgnumber", Sort.DESCENDING);
    ArrayList<timeData> arrayList = new ArrayList();
    for(int i = 0;i<result.size()-1;i++){
        System.out.println(arrayList.add(result.get(i)));
    }

这没有用。而且我不知道 db 是否创建在第一位，无论如何不能在手机上找到它。

This did not work. And also I dont know if the db i created in the first place, cant find it on the phone anyway.

UPDATE

listview = (ListView)findViewById(R.id.listView);
adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1);
listview.setAdapter(adapter);

推荐答案

根本原因是OP没有创建自定义适配器。 ListView需要创建一个类，该类从适用于每种用途的适配器类型 case 并覆盖至少 getView（）方法

The root cause was that the OP was not creating a custom adapter. A ListView requires the creation of a class that extends from a type of adapter purposeful to each use case and override at least the getView() method

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