JavaFx adding a text label on top of StackedBarChart

问题

After Search

I found this sample how to display bar value on top of bar javafx, But that when bar separated on the category axis so each category data has a single bar and Listener can be added to that data (Category).
But with StackedBarChart each category consists of StackedBar.
I try that code simple based on the @jewelsea code.
That solution work prefect if all series are symmetric and contain all the categories.

But with non-symmetric series

    ObservableList<StackedBarChart.Series> barChartData = FXCollections.observableArrayList(
        new StackedBarChart.Series("Region 1", FXCollections.observableArrayList(
        new StackedBarChart.Data(years[0], 567d),
        new StackedBarChart.Data(years[1], 1292d),
        new StackedBarChart.Data(years[2], 1292d))),
        new StackedBarChart.Series("Region 2", FXCollections.observableArrayList(
        new StackedBarChart.Data(years[0], 956),
        new StackedBarChart.Data(years[1], 1665),
        new StackedBarChart.Data(years[2], 2559))),
        new StackedBarChart.Series("Region 3", FXCollections.observableArrayList(
        new StackedBarChart.Data(years[0], 1154),
        //new StackedBarChart.Data(years[1], 1927),// series names Region 3(which is the last series on the chart data) doesn't exist category years[1] "2008".
        new StackedBarChart.Data(years[2], 2774))));

We will miss Text on top of category 2008.
Any help are welcome.

回答1:

It's missing because you comment it out:

    //new StackedBarChart.Data(years[1], 1927),// series names Region 3(which is the last series on the chart data) doesn't exist category years[1] "2008".

That second parameter is the "1927" title. This is technically the Y-Axis parameter. You need to keep that line in order to show that "1927". Check out the API:

http://docs.oracle.com/javafx/2/api/javafx/scene/chart/StackedBarChart.html

You may need to put your "titles" up another way. Use a text class and add it on top of the StackedBarChart.Series objects.

来源：https://stackoverflow.com/questions/17838490/javafx-adding-a-text-label-on-top-of-stackedbarchart

标签

javafx-2