JavaFX，将 ArrayList 转换为 ObservableList [英] JavaFX, Casting ArrayList to ObservableList

问题描述

有没有办法将 ArrayList 转换为 ObservableList?我想在不遍历 ArrayList 的情况下做到这一点.

Is there a way to cast ArrayList to ObservableList? I would like to do it without iterating through ArrayList.

更具体地说，我使用 ORMLite 从数据库获取数据，我需要 ObservableList 作为从数据库获取数据的方法的输出.

To be more specific, I am using ORMLite to get data from database, and I need ObservableList as an output of the method fetching data from DB.

目前我正在做这样的事情:

Currently I am doing something like this:

ArrayList<Stavka> listStavaka = new ArrayList<>(); 
Dao<Stavka, Integer> stavkaDao = DaoManager.createDao(connection, Stavka.class);
listStavaka = (ArrayList<Stavka>) stavkaDao.queryForAll();
ObservableList<Stavka> oListStavaka = FXCollections.observableArrayList();
for (Stavka stavka : listStavaka) {
    oListStavaka.add(stavka);
}

我想做这样的事情:

ObservableList<Stavka> listStavaka = FXCollections.observableArrayList();
Dao<Stavka, Integer> stavkaDao = DaoManager.createDao(connection, Stavka.class);
listStavaka = (ObservableList<Stavka>) stavkaDao.queryForAll();

推荐答案

你可以做

ObservableList<Stavka> oListStavaka = FXCollections.observableArrayList(listStavaka);

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