Kivy 不允许我使用全屏

Question

I'm trying to make a Kivy MP3 player type app but for some reason I'm not allowed to use my full screen ie. when my code looks like this

from kivy.app import App
from kivy.uix.image import Image
from kivy.core.window import Window
from kivy.config import Config
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.label import Label
from kivy.core.audio import SoundLoader
from kivy.lang import Builder
class Application(App):
    def build(self):
       
        layout = BoxLayout(orientation="vertical")
       
        img = Image(source='myapp/logo1.png',size_hint=(1, .5),pos_hint={'center_x':0.7,"center_y":1},allow_stretch=True)
        button = Button(text="Click Here For Some Sweet Music",size_hint=(0.5,0.5),background_color=color,pos_hint={'center_x':0.7})
        button.bind(on_press=self.on_button_press)
        layout.add_widget(img)
        layout.add_widget(button)

Application().run()

I get a screen looking like but when I move the center x of the image to 1 I get an image looking like So there is an "imaginary" box inside the window. I've tried changing the Config settings but it doesn't work. How would I make this box larger?

Answer 1

The Button is not the full width of the window because of the size_hint that you have assigned. The Image is not the full width because the Image , by default, tries to maintain the aspect ratio of the source image. You can fill the entire window y adjusting size_hint and changing keep_ratio :

class Application(App):
    def build(self):
        layout = BoxLayout(orientation="vertical")

        img = Image(source='myapp/logo1.png', size_hint=(1, .5), pos_hint={'center_x': 0.5},
                    allow_stretch=True, keep_ratio=False)
        button = Button(text="Click Here For Some Sweet Music", size_hint=(1.0, 0.5),
                        pos_hint={'center_x': 0.5})
        button.bind(on_press=self.on_button_press)
        layout.add_widget(img)
        layout.add_widget(button)
        return layout