TableView实现筛选功能

原始问题地址:
https://stackoverflow.com/questions/42519911/execute-code-on-filtering-javafx-tableview-rows
主要思路
用FilteredList类，调用setPredicate函数获取满足条件的数据.
然后使用SortedList排序数据，最后调用comparatorProperty().bind函数将数据绑定到
TableView
步骤说明:
1.使用TableView数据源 distanceDatas 创建filteredData实例
FilteredList filteredData = new FilteredList<>(distanceDatas, p -> true);
2.对过滤条件的输入框进行监听
distanceFilterField.textProperty().addListener((observable, oldValue, newValue) -> { filteredData.setPredicate(commande -> { int lowerCaseFilter=0; try { lowerCaseFilter = Integer.valueOf(newValue); } catch(Exception e) { LogUtil.error(newValue+" 过滤条件不是整数"); return true; } //偏移距离大于输入值则显示 if (Double.valueOf(commande.getDistance().get())>lowerCaseFilter) { return true; // Filter matches first name. } }) }
filteredData.setPredicate把满足条件的数据获取出来，返回true

3.对筛选的数据进行排序
SortedList sortedData = new SortedList<>(filteredData);
4.将数据绑定到TableView
sortedData.comparatorProperty().bind(distanceTableView.comparatorProperty()); // 5. Add sorted (and filtered) data to the table. distanceTableView.setItems(sortedData);

下面是完整代码:

    //丢星表数据
    private ObservableList distanceDatas;
    // 偏移距离表
    @FXML
    TableView distanceTableView;
    //偏移距离大于输入值则显示
    @FXML
    TextField distanceFilterField;
    /**
     * 过滤偏移距离
     * 偏移距离大于输入值则显示
     * 实现表格过滤行:
     * https://stackoverflow.com/questions/42519911/execute-code-on-filtering-javafx-tableview-rows
     */
    public void filterDistance()
    {
        //偏移距离数据
        FilteredList filteredData = new FilteredList<>(distanceDatas, p -> true);
        // 2. Set the filter Predicate whenever the filter changes.
        distanceFilterField.textProperty().addListener((observable, oldValue, newValue) -> {
            filteredData.setPredicate(commande -> {
                LogUtil.info("[filterField.textProperty()]");
                // If filter text is empty, display all persons.
                if (newValue == null || newValue.isEmpty()) {
                    return true;
                }

                // Compare first name and last name of every person with filter text.
                int lowerCaseFilter=0;
                try
                {
                    lowerCaseFilter = Integer.valueOf(newValue);
                }
                catch(Exception e)
                {
                    LogUtil.error(newValue+" 过滤条件不是整数");
                    return true;
                }

                //偏移距离大于输入值则显示
                if (Double.valueOf(commande.getDistance().get())>lowerCaseFilter) {
                    return true;
                    // Filter matches first name.

                }/* else if (String.valueOf(commande.getCMD()).toLowerCase().contains(lowerCaseFilter)) {
                    return true; // Filter matches last name.
                }
                else if (String.valueOf(commande.getClient()).toLowerCase().contains(lowerCaseFilter)) {
                    return true; // Filter matches last name.
                }
                 */
                return false; // Does not match.
            });

            // 3. Wrap the FilteredList in a SortedList.
            SortedList sortedData = new SortedList<>(filteredData);
            // 4. Bind the SortedList comparator to the TableView comparator.
            sortedData.comparatorProperty().bind(distanceTableView.comparatorProperty());
            // 5. Add sorted (and filtered) data to the table.
            distanceTableView.setItems(sortedData);
        });
    }

代码运行效果

image.png