AffineTransform symbol can not be found?

Question

Hi all, I am experiencing a run time error when calling ` var transform = new Gfx.AffineTransform ()`. I have gone through all the reference material for the `Toybox.Graphics.AffineTransform` at the link below. https://developer.garmin.com/connect-iq/api-docs/Toybox/Graphics/AffineTransform.html For the life of me, I can't see what I am doing wrong. Any ideas? Here is the run time error. ```error Error: Symbol Not Found Error Details: Could not find symbol 'AffineTransform' Stack: - onUpdate() at X:\Projects\garmin\applications\Test1\source\PageTwo.mc:74 0x10000425 ``` And for reference, here is the full class source file. ```mc using Toybox.Application; 
 
 using Toybox.Timer; 
 using Toybox.WatchUi as Ui; 
 using Toybox.Graphics as Gfx; 
 using Toybox.Lang as Lang; 
 using Toybox.System as Sys; 
 
 class PageTwo extends Ui.View 
 { 
 var image; 
 var angle = 0 ; 
 var timer; 
 
 // Constructor. 
 
 function initialize () 
 { 
 Ui.View. initialize (); 
 
 // Load image resource. 
 
 image = Ui. loadResource ( Rez.Drawables.ImageHela ); 
 
 // Initialise timer. 
 
 timer = new Timer. Timer (); 
 timer. start ( method ( :timerCallback ), 1000 , true ); 
 } 
 
 // Called when the view is about to be displayed. 
 
 function onShow () 
 { 
 // Code to display the image. 
 } 
 
 // Timer callback to update rotation. 
 
 function timerCallback () as Void 
 { 
 if ( Constant.CONSTANT_CONSOLE_ENABLED ) { System. println ( Constant.CONSTANT_CONSOLE_TIMER + "Angle update." ); } 
 
 // Uopdate angle. 
 
 angle += 1 ; 
 
 // Request a redraw of the view. 
 
 WatchUi. requestUpdate (); 
 } 
 
 // Drawing the image on the screen. 
 
 function onUpdate ( dc ) 
 { 
 // Initialise geometry. 
 
 var width = dc. getWidth (); 
 var height = dc. getHeight (); 
 var imageWidth = image. getWidth (); 
 var imageHeight = image. getHeight (); 
 
 // Center image vertically and horizontaly. 
 
 var x = ( width - imageWidth ) / 2 ; 
 var y = ( height - imageHeight ) / 2 ; 
 
 var xc = width / 2 ; 
 var yc = height / 2 ; 
 
 // Drawing the image. 
 
 var transform = new Gfx. AffineTransform (); 
 transform. rotate ( angle ); 
 
 var parameters = 
 { 
 :bitmapX => x, 
 :bitmapY => y, 
 :bitmapWidth => imageWidth, 
 :bitmapHeight => imageHeight, 
 //:tintColor => null, 
 //:filterMode => null, 
 :transform => transform 
 }; 
 
 dc. clear (); 
 dc. drawBitmap2 ( xc, yc, image, parameters ); 
 } 
 
 // Handling the back button press to return to the main menu. 
 
 function onKeyBack () 
 { 
 // Switch back to the previous view (main menu). 
 
 Ui. popView ( WatchUi.SLIDE_LEFT ); 
 
 // Indicates that the key event was handled. 
 
 return true ; 
 } 
 } ```

jim_m_58 · Accepted Answer

The Descent G1 only has CIQ 3.4

Descent G1 / G1 Solar

176 x 176 
 semi-octagon 
 Transflective Liquid-Crystal (Single Color) 
 3.4.0

And this call requires CIQ 4.2.0 or greater. It's not available on the Descent G1 
 The API doc will say something like 
 "Since API Level x.y.z" 
 and you can see what devices have here: https://developer.garmin.com/connect-iq/compatible-devices/

flowstate · Answer

4676315 said: I didn't think that AffineTransform would be something specific to a particular device. 
 I think AffineTransform requires a GPU, and only CIQ 4 devices have a GPU. 
 Also, there are many old devices which are stuck on CIQ 1 or CIQ 2, and they won't be getting new features or bug fixes regardless of hardware requirements. 
 4676315 said: How do you check what devices a class or its methods are compatible with? 
 The API docs typically list the supported devices for a method, when applicable. Sometimes these lists have omissions (due to being out of date), but generally they're correct. 
 Since AffineTransform doesn't have a supported devices list in the API docs, you'll have to go by the fact that it's available since CIQ API Level 4.2.0, as jim_m_58 mentioned. 
 https://developer.garmin.com/connect-iq/api-docs/Toybox/Graphics/AffineTransform.html

jim_m_58 · Answer

The current production SDK (6.4.2) can be used. You do not want to use a 3.x SDK.

flowstate · Answer

No, as jim_m_58 implied, the latest non-beta CIQ SDK can always be used to build apps for all existing devices, even devices which have an "old" CIQ API level. Sometimes new devices will be released which require a newer SDK (which will be released at the same time.) 
 There isn't much reason to use an old SDK, except maybe: 
 - if the latest SDK is known to have a bug or performance/resource usage problems 
 - if you're fixing a bug in an old app with that only supports old devices, and you want to change as little as possible from the previously released version 
 - you want to recreate some issue that's happening with an app that was built with an older SDK and you want to change as little as possible

AffineTransform symbol can not be found?

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