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I am making an animation movie in Pythonista, which is to be recorded and distributed.
Of course, I use Scene for this purpose. But, there is always the stop-cross in the upper left hand corner visible.
Is there a way to hide this unwanted cross?

You could run the scene with a SceneView, and present it using the hide_title_bar option.

Here's a short example with a scene that just draws a green background:

from scene import *

class MyScene (Scene):
    def draw(self):
        background(0, 0, 1)

view = SceneView()
view.scene = MyScene()
view.present('fullscreen', hide_title_bar=True)

(swipe down with two fingers to close the view)

There's currently no way to hide the status bar (time, battery...) though.

This is definitely not working in the recent implementation of Pythonista. Any new ideas for how to solve this? I want to remove the X for the full screen app I'm building.

Discussed here
https://forum.omz-software.com/topic/3306/disable-on-screen-printing-in-scene-

Now with objc_util it is possible to hide status bar(battery, time etc)

import scene, ui
from objc_util import UIApplication

def close_view():
    v.close() 

class MyScene(scene.Scene):
    def setup(self):
        self.test_label = scene.LabelNode('Test hide title bar', 
            position=self.size/2.0, parent=self)
        self.close_label = scene.LabelNode('Close view',
            position=(self.size[0]/2, self.size[1]/2-100),
            parent=self)

    def touch_began(self, touch):
        if touch.location in self.close_label.frame:
            close_view()

w, h = ui.get_window_size()
frame = (0, 0, w, h)
v = ui.View(frame=frame)
scene_view = scene.SceneView(frame=frame)
scene_view.flex= 'WH'
scene_view.scene = MyScene()
v.add_subview(scene_view)                
v.present('fullscreen', hide_title_bar=True)
UIApplication.sharedApplication().statusBar().hidden = True

    def hide_close(self, state=True):
        from objc_util import ObjCInstance
        v = ObjCInstance(self.view)
        for x in v.subviews():
            #if 'UIButton' in x.description():
            if str(x.description()).find('UIButton') >= 0:
                x.setHidden(state)

This works better for me.