JavaFX，将 ArrayList 转换为 ObservableList
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JavaFX, Casting ArrayList to ObservableList
提问by Miljac
Is there a way to cast ArrayListto ObservableList? I would like to do it without iterating through ArrayList.
有没有办法投射ArrayList到ObservableList？我想在不迭代的情况下做到这一点ArrayList。
To be more specific, I am using ORMLite to get data from database, and I need ObservableListas an output of the method fetching data from DB.
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。
Currently I am doing something like this:
目前我正在做这样的事情：
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);
}
And I would like to do something like this:
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();
采纳答案by Uluk Biy
You can do
你可以做
ObservableList<Stavka> oListStavaka = FXCollections.observableArrayList(listStavaka);
回答by Eric Chan
As in Uluk Biy's answer, but if you don't want to mix it with new list by FXCollections, just use this...
就像在 Uluk Biy 的回答中一样，但如果您不想将它与 FXCollections 的新列表混合，只需使用它...
oListStavaka.addAll(stavkaDao.queryForAll());
