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Add Data Visualization to the App - Part 1

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Add Data Visualization to the App - Part 1
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Add Data Visualization to the App - Part 1

11/28/2018

Use Storyboards to build the UI for the static data to display

You will learn

  • About the data visualization capabilities of the SDK


Step 1: Data visualization example

In the Project navigator, navigate to the MyDeliveries/ViewControllers/PackagesType folder. Control-click (or right-click) this folder, and from the context menu, select New File…

In the dialog, select Cocoa Touch Class:

New View Controller subclass

Click Next.

First, set the Subclass to UIViewController.

Then, change the Class to ChartViewController.

New View Controller subclass

Click Next to continue. Check that the file is saved in the PackagesType group, and click Create to create the class. The new file will open now.

In order to show the SDK’s data visualizations, it should subclass FUIChartFloorplanViewController.

First add the necessary import statements:

import SAPFoundation
import SAPFiori
import SAPCommon

Then change the signature of the class so it now extends from FUIChartFloorplanViewController:

class ChartViewController: FUIChartFloorplanViewController {

Now you have the scaffolding for the data visualizations class. We’ll leave it for now, the actual implementation will be finalized in a later step.

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Step 2: Add view controller to storyboard

Open the PackagesType.storyboard file, and click the Object Library button in the right area of the toolbar. Drag a View Controller onto the storyboard.

Create View Controller

Select the new View Controller and go to the Attributes Inspector. Set the Title to Chart View:

Create View Controller

Now switch to the Identity Inspector, enter ChartViewController for the Custom Class, and press Return. Be sure to get the spelling right; if it’s correct, you’ll see the Module change to MyDeliveries (the name of your project):

Create View Controller

Use the Object Library to drag a single Table View Cell onto the Detail Table View, and set the following properties in the attribute inspector:

Field Value
Identifier NavToShowChart
Accessory Disclosure Indicator
Create Table View Cell

Hold down the Control key and drag from the just added Table View Cell to the Chart View Scene, creating a connection line between them. From the Segue dialog, choose Show.

With the segue selected, go to the attributes inspector and provide the name showChart as its Identifier.

Create Segue
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Step 3: Implement Table View Cell for Chart

Open file ./MyDeliveries/ViewControllers/PackagesType/PackagesTypeDetailViewController.swift.

Locate the function tableView(_:numberOfRowsInSection:). Again, you can use the jump bar above the editor pane to quickly find this function.

Currently this returns 5 rows, the total number of properties the Package entity has. However, since you added an extra Table View Cell to navigate to the Chart View scene, you want to make this extra cell visible.

Set the return value to 6:

override func tableView(_: UITableView, numberOfRowsInSection _: Int) -> Int {
    return 6
}

Next, locate the function tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath).

To display the added Table View Cell, add an extra case statement, just above the default: switch:

case 5:
    let chartNavigationCell = tableView.dequeueReusableCell(withIdentifier: "NavToShowChart", for: indexPath)
    chartNavigationCell.textLabel?.text = "Waiting Time"
    chartNavigationCell.textLabel?.textColor = .preferredFioriColor(forStyle: .primary1)

    return chartNavigationCell
What function tells the table view how many rows to display?
×

Next Steps

Prerequisites

  • Development environment: Apple Mac running macOS High Sierra or higher with Xcode 10 or higher
  • SAP Cloud Platform SDK for iOS: Version 3.0
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