Removing Table Header Elements

Operating system requirements: iOS 5.0 or later.

Mobile device: iPad.

Description

This example displays working with table header elements. After starting the example the following operations are executed:

Top header of pivot object for building data tables is returned.
A new object of table top header is created.
The number of elements before and after their removal from table top header is determined.
Elements of table top header with the 1, 2 and 3 indexes are removed by various methods.

Source Code

Executing the example requires to place the following code in the body of the executeExample method of the ViewController class (see the Data Analysis section):

// Get table left header
SPPLPivotHeader topPivotHeader = m_gridPivot->topHeader();
// Get data source dimension selection
SPPLDimensionSelectionSet selectionSet = m_gridPivot->selectionSet();
SPPLPivotTableHeaderElements pivotTableHeaderElements = new PPLPivotTableHeaderElements(topPivotHeader->dimensions(), selectionSet);
printf("Initial number of elements: %d \n", pivotTableHeaderElements->elementsCount());
//SNMutableArray indexes = new NMutableArray();
for (int i = pivotTableHeaderElements->elementsCount() - 1; i >= 0; i--) {
    SPPLPivotTableHeaderElement element = pivotTableHeaderElements->getElementByIndex(i);
    switch (i) {
        case 1:
        // Remove element by index
        pivotTableHeaderElements->removeElementByIndex(i);
        break;
        case 2:
        // Remove element
        pivotTableHeaderElements->removeElement(element);
        break;
        case 3:
        // Remove element by array of indexes
        SNArray indexes = NArray::arrayWithObject(NNumber::numberWithInt(i));
        pivotTableHeaderElements->removeElementsWithIndexes(indexes);
        break;
    }
}
printf("Remained number of elements: %d \n", pivotTableHeaderElements->elementsCount());

After executing the example the development environment console displays the number of table elements before and after their removal:

Initial number of elements: 6

Remained number of elements: 3