Changing Cell Height

Operating system requirements: iOS 5.0 or later.

Mobile device: iPad.

Description

This example implements changing of selected table cell height.

Source Code

Executing the example requires to place the following code instead of the executeExample method of the ViewController class (see the Creating a Simple Data Grid section):

-(void) executeExample{
    // Create an table resize element
    NuGridResizer *resizer = [NuGridResizer resizerForGridView:[contr gridView]];
    // Set parent table
    [resizer setParentGrid: [contr gridView]];
    // Resize vertical area used for resizing
    CGSize size = CGSizeMake(90, 90);
    [resizer setTopBottomSelectionTouchAreaSize:size];
    // Set resize element
    [[contr gridView] setValue:resizer forKey:@"m_resizer"];
    // Set start size of changed cell height
    rowHeight = 50;
};
 // Handle table cell press event
 - (void)gridView:(NuGridView *)gridView wasTouchedInCell:(NuGridCell *)cell {
     // Start to change cell height
     [gridView addSubview:[gridView resizer]];
     [[gridView resizer] resizeHeightForCell: cell];
 }
// Handle cell height change event
- (void)gridView:(NuGridView *)gridView heightChangeNeeded:(double)newHeight forCell:(NuGridCell *)cell
{
    // Finish cell resizing if its height exceeds 300 pixels
    if(newHeight > 300)
    {
        [[gridView resizer] finish];
    }
    // Save cell height value
    rowHeight = newHeight;
    // Stretch resize area after it was changed
    [[gridView resizer] stretchAfterChanging];
}

It is also required to place the following code instead of the heightForRow method of the ViewController class:

// Set row height
- (double) gridView:(NuGridView *)gridView heightForRow:(NSInteger)rowNumber
{
    if(rowNumber == 2)
    {
        return rowHeight;
    }
    else
    {
        return 50;
    }
}

Press any table cell, which is in the row with the number 2, after that change its height by dragging the marker.

As a result, the selected cell height is changed: