[PM-162] IOS and system.perspective.download

Ignition
,
3

Try specifying a Mime type. Here's an example of an onClick action where an image file is in the gateway's data folder.

Edit: I've also filed a ticket to look into making this a bit better.

	from java.io import File
	from com.inductiveautomation.ignition.gateway.util import MimeTypeUtils
	
	fileName = 'data/image.png'
	
	target = File(fileName)
	
	if (target.exists()):
		data = system.file.readFileAsBytes(fileName)
		fileName = target.getName()
		contentType = MimeTypeUtils.determineMimeType(fileName)
		system.perspective.download(filename = fileName, data = data, contentType = contentType)```