AMSL Altitude Widget - dji-sdk/Mobile-UXSDK-Beta-iOS GitHub Wiki

The AMSL Altitude Widget is a Text type of Base Telemetry Widget. It shows the current above-mean-sea-level (AMSL) altitude, which is the altitude of the aircraft against the average sea level.

The states of the widget are the following:

State	Image
Disconnected
Metric Unit System
Imperial Unit System

If creating the AMSL altitude widget through code it can be added using the convenience method:

- (void)installInViewController:(nullable UIViewController *)viewController

which adds the widget the method is called on, as a subview of the ViewController, that is passed in as an argument. Following this, add constraints to the widget using its widgetSizeHint property to determine width, height and aspect ratio constraints.

If creating the widget through storyboard use the object library to drag a container view controller into the desired view controller like so:

Following this make sure to change the class of the child view controller to be DUXBetaAMSLAltitudeWidget. From here you can create the constraints on the container view using the Telemetry Panel Widget's widgetSizeHint property.

The UI elements can be customized to match the style of the user's application. The widget supports all the Text Customizations provided in the Base Telemetry Widget.

State	Image
Disconnected
Metric Unit System
Imperial Unit System

amslAltitudeWidget.backgroundColor = UIColor.white
amslAltitudeWidget.labelTextColor = UIColor.black
amslAltitudeWidget.valueTextColor = UIColor.blue
amslAltitudeWidget.unitTextColor = UIColor.blue

amslAltitudeWidget.backgroundColor = [UIColor whiteColor];
amslAltitudeWidget.labelTextColor = [UIColor blackColor];
amslAltitudeWidget.valueTextColor = [UIColor blueColor];
amslAltitudeWidget.unitTextColor = [UIColor blueColor];

The widget provides hooks for the users to add functionality based on the state changes in the widget. The DUXBetaAMSLAltitudeWidget provides the following hooks:

1. AMSLAltitudeModelState - Provides hooks in events received by the widget from the widget model.
   • public static func productConnected(_ isConnected: Bool) -> AMSLAltitudeModelState - Event when the product is connected or disconnected.
   • public static func altitudeStateUpdated(_ altitudeState: AltitudeState) -> AMSLAltitudeModelState - Event when the AMSL altitude state is updated.