Kivy：使用kivy builder

Question

我是python和kivy的新手，所以请温柔:)

我有3个标签，希望应用程序在按下button1和button2时显示下一个标签，并在按下按钮3时自行关闭。如果可能的话，我想使用kivy builder来做到这一点。

请帮忙：/

from kivy.app import App
from kivy.uix.tabbedpanel import TabbedPanel
from kivy.lang import Builder

class Root(TabbedPanel):
    pass

Builder.load_string('''
<Root>
    do_default_tab: False
    size_hint: 1, 1
    post_hint: {'center_x': .5, 'y': .5}
    do_default_tab: False
    TabbedPanelItem:
        text: 'Step 1'
        FloatLayout:
            Button:
                id: button1
                size_hint: .10, .10
                pos: 1350, 40
                orientation: 'vertical'
                text: 'Next!'
                on_press: print("go to next step") #need help
    TabbedPanelItem:
        text: 'Step 2'
        FloatLayout:
            Button:
                id: button2
                size_hint: .10, .10
                pos: 1350, 40
                orientation: 'vertical'
                text: 'Next!'
                on_press: print("go to next step") #need help
    TabbedPanelItem:
        text: 'Step 3'
        FloatLayout:
            Button:
                id: button3
                size_hint: .10, .10
                pos: 1350, 40
                orientation: 'vertical'
                text: 'The End.'
                on_press: print("exiting") #need help
''')

class TabbedPanelApp(App):
    def build(self):
        return Root()

if __name__ == '__main__':
    TabbedPanelApp().run()

Answer 1

TabbedPanel.switch_to对我来说似乎很简单。只需在这三个using (FileStream fsSourceDDS = new FileStream(strDDSFilename, FileMode.Open, FileAccess.Read)) using (BinaryReader binaryReader = new BinaryReader(fsSourceDDS)) { fsSourceDDS.Seek(0x0c, SeekOrigin.Begin); ushort with = binaryReader.ReadUInt16(); fsSourceDDS.Seek(0x10, SeekOrigin.Begin); ushort height = binaryReader.ReadUInt16(); } 中使用它：

on_press

root.switch_to(root.tab_list[1]) root.switch_to(root.tab_list[0]) root.switch_to(root.tab_list[2]) 处于“反转”状态 - 最后添加的tab_list是列表中的第一项。