如何在 ListView 中使用 JavaFX FilteredList? [英] How to use JavaFX FilteredList in a ListView?

问题描述

我的应用程序中有一个包含字符串的 ListView.现在，我想通过输入字段过滤此列表.但是我发现的所有关于 FilteredLists 的例子都是关于如何过滤表格的.

I have a ListView in my application which contains Strings. Now, I want to filter this list by an input field. But all examples about FilteredLists I found are about how to filter a table.

如何使用 FilteredList 过滤 ListView?

How can I filter a ListView using a FilteredList?

推荐答案

那相当简单明了:

@Override
public void start(Stage primaryStage) {

    ObservableList<String> data = FXCollections.observableArrayList();
    IntStream.range(0, 1000).mapToObj(Integer::toString).forEach(data::add);

    FilteredList<String> filteredData = new FilteredList<>(data, s -> true);

    TextField filterInput = new TextField();
    filterInput.textProperty().addListener(obs->{
        String filter = filterInput.getText(); 
        if(filter == null || filter.length() == 0) {
            filteredData.setPredicate(s -> true);
        }
        else {
            filteredData.setPredicate(s -> s.contains(filter));
        }
    });


    BorderPane content = new BorderPane(new ListView<>(filteredData));
    content.setBottom(filterInput);

    Scene scene = new Scene(content, 500, 500);
    primaryStage.setScene(scene);
    primaryStage.show();
}

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