Aspose.Slides for Android via Java 19.4 Release Notes

This page contains release notes for Aspose.Slides for Andriod via Java 19.4

Key	Summary	Category
SLIDESANDROID-154	Add support for Android KitKat 19	Feature
SLIDESANDROID-140	Use Aspose.Slides for Java 19.4 features	Feature
SLIDESNET-41018	Supporting of external Excel workbooks	Feature
SLIDESNET-40897	Support for OpenDocument encryption	Feature
SLIDESNET-40938	PDF text is not searchable when exported to PDF with Notes	Enhancement
SLIDESANDROID-156	Out of memory exception during the conversion to PDF	Bug

Public API Changes

New Size and SizeF classes have been added

New classes Size and SizeF have been added to com.aspose.slides.android package.

Size - Stores a pair of integers, which specify a height and width. SizeF - Stores a pair of floating-point numbers, which specify a height and width.

These classes are used instead of android.util.Size and android.util.SizeF to support Android SDK API level 19.

The code snippet below shows a sample of usage Size and SizeF:

Presentation p = new Presentation("ExistingChart.pptx"); 

//get silde size
SizeF slideSize = p.getSlideSize().getSize(); 

//create a thumbnail using custom size
android.graphics.Bitmap bmp = p.getSlides().get_Item(0).getThumbnail(new Size(800, 600));

Support of external workbooks as a data source for charts has been added - ANDROID

Since version 19.4 Aspose.Slides supports external workbooks as a data source for charts.

IResourceLoadingCallback can be used to manage external workbook loading. See New IResourceLoadingCallback interface has been added

1. Chart data in external workbooks can be edited the same way it works for internal workbooks. If external workbook can’t be loaded an exception is thrown.

Presentation pres = new Presentation("presentation.pptx");
try
{
    IChart chart = (IChart) pres.getSlides().get_Item(0).getShapes().get_Item(0);
    ChartData chartData = (ChartData)chart.getChartData();

    assert(chartData.getDataSourceType() == ChartDataSourceType.ExternalWorkbook);

    chartData.getSeries().get_Item(0).getDataPoints().get_Item(0).getValue().getAsCell().setValue(100);
    pres.save(outPptxFileName, SaveFormat.Pptx);
}
finally {
    pres.dispose();
}

2. An external workbook can be assigned to a chart as a data source. For this purpose IChartData.setExternalWorkbook(String workbookPath) method has been added.

setExternalWorkbook() method can be also used to update a path to the external workbook if it has been moved. Workbooks placed on remote resources unavailable for data editing but still can be assigned as an external data source. If the relative path was provided for an external workbook, it converts to full path automatically.

Presentation pres = new Presentation();
try
{
    IChart chart = pres.getSlides().get_Item(0).getShapes().addChart(ChartType.Pie, 50, 50, 400, 600, false);
    IChartData chartData = chart.getChartData();

    assert(chartData.getDataSourceType() == ChartDataSourceType.ExternalWorkbook);

    chartData.setExternalWorkbook("externalWorkbook.xlsx");

    assert(chartData.getDataSourceType() == ChartDataSourceType.ExternalWorkbook);

    chartData.getSeries().add(chartData.getChartDataWorkbook().getCell(0, "B1"), ChartType.Pie);
    chartData.getSeries().get_Item(0).getDataPoints().addDataPointForPieSeries(chartData.getChartDataWorkbook().getCell(0, "B2"));
    chartData.getSeries().get_Item(0).getDataPoints().addDataPointForPieSeries(chartData.getChartDataWorkbook().getCell(0, "B3"));
    chartData.getSeries().get_Item(0).getDataPoints().addDataPointForPieSeries(chartData.getChartDataWorkbook().getCell(0, "B4"));

    chartData.getCategories().add(chartData.getChartDataWorkbook().getCell(0, "A2"));
    chartData.getCategories().add(chartData.getChartDataWorkbook().getCell(0, "A3"));
    chartData.getCategories().add(chartData.getChartDataWorkbook().getCell(0, "A4"));
    pres.save("Presentation.pptx", SaveFormat.Pptx);
}
finally {
    pres.dispose();
}

3. Combination of methods IChartData.readWorkbookStream() and IChartData.setExternalWorkbook() can be used to create an external workbook from scratch or to make an internal workbook external.

Presentation pres = new Presentation("presentaion.pptx");
try
{
    String externalWbPath = "externalWorkbook.pptx";

    IChart chart = pres.getSlides().get_Item(0).getShapes().addChart(ChartType.Pie, 50, 50, 400, 600);

    java.io.File file = new File(externalWbPath);
    if (file.exists())
        file.delete();

    byte[] worbookData = chart.getChartData().readWorkbookStream();
    FileOutputStream outputStream = new FileOutputStream(file);
    outputStream.write(worbookData);
    outputStream.close();

    chart.getChartData().setExternalWorkbook(externalWbPath);
} catch (FileNotFoundException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
} finally {
    pres.dispose();
}