Wow, this is very impressive. Sorry for that most likely stupid question: Is there a way to use this with a scene? I am trying to make a scene zoom+panable, but I did not manage to do it.
I wanted to use

def on_pinch(self, data):
    self.scale = data.scale 

and

def on_pan(self, data):
    self.frame = (data.translation.x, data.translation.y, self.width, self.height)   

inside my scene class, where I would have got self.width and self.height before from ui.get_screen_size...

Maybe someone could provide me with a basic example for a zoom and panable scene?
Would be great, thanks in advance.

@cvp Thanks, I‘ll Play around with this a bit. I have Not seen that other thread, so sorry for the duplicate..

Whenever I update the title of a ui.button an animation is shown (so it appears as if the button flickers).

This seems to be normal on iOS, and this is how it can be prevented in native Apps: https://stackoverflow.com/questions/18946490/how-to-stop-unwanted-uibutton-animation-on-title-change

Is there a way to prevent this animation in Pythonista (for example using obj_c )?

I would really like to use a button and not a custom view...

Yes, but the Script is still running, even so the UI is closed

@cvp I do it with:

v=ui.loadView()
v.present(style=full_screen, orientations= ['portrait'])

the title bar is shown by default, isn't it?
I can post the whole code later if necessary...

Is there a way to send 'CTRL-C' via the UI close button in the title bar?

I want to call

except KeyboardInterrupt:
  cb.reset()

when the close button in the title bar is tapped.

I have tried making the main View a customView and then using

class MainView(ui.View):
 def will_close(self):
   print('Closing')
   cb.reset()
   sys.exit(0)

Only to be clear: I do not want to close Pythonista, I only want to stop the script from running, when I hit the close button in the UI and return to the console/editor.

@cvp
Thank you very much!

import ui, sound

#sound.set_honors_silent_switch(False) #maybe for production

class ButtonWrapper(ui.View):
	
	def touch_began(self, touch):
		imageName = self.subviews[0].path
		imageName = imageName[12:][:-7]
		imageName = 'res/buttons/' + imageName +'on.png'
		self.subviews[0].image = ui.Image.named(imageName).with_rendering_mode(ui.RENDERING_MODE_ORIGINAL)
		self.subviews[0].path = imageName
		sound.play_effect(self.subviews[0].name)
		
	def touch_ended(self, touch):
		imageName = self.subviews[0].path
		imageName = imageName[12:][:-6]
		imageName = 'res/buttons/' + imageName +'off.png'
		self.subviews[0].image = ui.Image.named(imageName).with_rendering_mode(ui.RENDERING_MODE_ORIGINAL)
		self.subviews[0].path = imageName
		

v = ui.load_view()

v.present(style = 'full_screen', orientations = ['portrait'],title_bar_color='#222222', hide_title_bar=True) #In order to exit swipe down with two fingers

So I have a Script, that is supposed to change a background picture of a button while it is pressed.
I have stored the pictures in "res/buttons/" where one is for example called "orangeoff.png" and one is called "orangeon.png". With the above code I can achieve what I want.
However when I add the Script to the homescreen to run it from there I get the following exception most of the time:

Traceback (most recent call last):
  File "/private/var/mobile/Containers/Shared/AppGroup/C1A7CE9F-6A30-4CA8-9380-76FD1CACD07F/Pythonista3/Documents/main.py", line 19, in touch_ended
    self.subviews[0].image = ui.Image.named(imageName).with_rendering_mode(ui.RENDERING_MODE_ORIGINAL)
AttributeError: 'NoneType' object has no attribute 'with_rendering_mode'

When I hit the back button on the left top, and basically reload the view, everything works as expected again. Does anybody have an idea, why this might happen, and how to prevent it?

For clarification, this is my .pyui file (the view above the button is only needed to prevent the touch effect):

[
  {
    "nodes" : [
      {
        "nodes" : [
          {
            "nodes" : [

            ],
            "frame" : "{{0, 0}, {240, 247}}",
            "class" : "View",
            "attributes" : {
              "frame" : "{{46, 2}, {100, 100}}",
              "class" : "View",
              "name" : "view1",
              "uuid" : "02ECED66-9D85-4C76-94DC-0FBB760E6596"
            },
            "selected" : false
          },
          {
            "nodes" : [

            ],
            "frame" : "{{0, 0}, {240, 247}}",
            "class" : "Button",
            "attributes" : {
              "action" : "",
              "frame" : "{{10, 34}, {80, 32}}",
              "title" : "",
              "uuid" : "350C205C-A1B2-41CA-B6ED-EA120173BF4C",
              "class" : "Button",
              "custom_attributes" : "{'image':ui.Image.named('res\/buttons\/blueoff.png'). with_rendering_mode(ui.RENDERING_MODE_ORIGINAL), 'path': 'res\/buttons\/blueoff.png'}",
              "font_size" : 15,
              "name" : "res\/sounds\/intro.mp3"
            },
            "selected" : false
          }
        ],
        "frame" : "{{0, 0}, {240, 240}}",
        "class" : "View",
        "attributes" : {
          "uuid" : "C5101DD7-0CBA-448A-8BC8-34F0CF0347B3",
          "frame" : "{{110, 950}, {100, 100}}",
          "class" : "View",
          "name" : "view1",
          "custom_class" : "ButtonWrapper"
        },
        "selected" : false
      }
    ],
    "frame" : "{{0, 0}, {240, 240}}",
    "class" : "View",
    "attributes" : {
      "name" : "",
      "enabled" : true,
      "background_color" : "RGBA(1.000000,1.000000,1.000000,1.000000)",
      "tint_color" : "RGBA(0.000000,0.478000,1.000000,1.000000)",
      "border_color" : "RGBA(0.000000,0.000000,0.000000,1.000000)",
      "flex" : ""
    },
    "selected" : false
  }
]

This is sadly not working anymore in recent versions of pythonista, am I right?

Thank you,
but this is not quite what I was looking for...
I ended up declaring another custom attribute which contains the path. It will result in a bit more work in the UI Designer, but at least it works.