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I want to use LargeNavigationBar at Pythonista.

But I don't know how to use it...

Could you tell me method of implementation?

@v3 try

n = ui.NavigationView(v1)
ObjCInstance(n).navigationController().navigationBar().setPrefersLargeTitles_(True)

In, for instance,

import ui
from objc_util import *

class MyView(ui.View):
    def __init__(self,name):
        self.name = name
    def draw(self):
        if self.name != n.name:
            if n.name != None:
                print(n.name,'closed')
            n.name = self.name

v1 = MyView('v1')
v2 = MyView('v2')
v3 = MyView('v3')

n = ui.NavigationView(v1)
ObjCInstance(n).navigationController().navigationBar().setPrefersLargeTitles_(True)
n.push_view(v2)
n.push_view(v3)

n.present()

It worked perfectly!!
I really appreciate it! Thanks :)