沒有名稱的屏幕

Question

我所有的程序都可以正常工作，並且我被它阻擋了。

1. 我的程序會在主應用程序中加載一些啓動器屏幕。
2. 基於用戶輸入，程序加載完全不同的子應用程序。試圖改變屏幕在加載的子應用

這裏的時候是哪裏出了問題存在的代碼發生

問題：

的.py文件：

import kivy 
kivy.require('1.10.0') 

from kivy.app import App 
from kivy.lang import Builder 
from kivy.uix.screenmanager import Screen, ScreenManager, FadeTransition 
from kivy.uix.button import Button 
from kivy.uix.label import Label 

chClass = "" 

class ScreenManage(ScreenManager): 
    pass 

class Home(ScreenManager): 
    pass 

class TitleScreen(Screen): 
    pass 

class GameScreen(Screen): 
    pass 

class ClassScreen(Screen): 
    pass 

class Warrior1(Screen): 

    def GetChClass(self, ch): 
     return ch 

    def build(self): 
     ExecuteW().run() 

class Acrobat1(Screen): 

    def GetChClass(self, ch): 
     return ch 

class Spell1(Screen): 

    def GetChClass(self, ch): 
     return ch 

class HomeScreen(Screen): 
    pass 

class WarriorStats(Screen): 
    pass 

class AcrobatStats(Screen): 
    pass 

class SpellCasterStats(Screen): 
    pass 

class ExecuteW(App): 
    def build(self): 
     return Home() 

class RevengeApp(App): 
    def build(self): 
     return ScreenManage() 

if __name__ == '__main__': 
    print chClass 
    RevengeApp().run() 

revenge.kv：

#: import sm kivy.uix.screenmanager 
#: import Factory kivy.factory.Factory 
#: import builder kivy.lang.Builder 

<ScreenManage> 
    transition: sm.FadeTransition() 
    TitleScreen: 
    ClassScreen: 
    GameScreen: 
    Warrior1: 
    Acrobat1: 
    Spell1: 
    WarriorStats: 

<TitleScreen> 
    on_touch_down: app.root.current = 'Game' 
    canvas: 
     Rectangle: 
      size: self.size 
      pos: self.pos 
      source: 'KnightArmor.jpg' 
    BoxLayout: 
     orientation: 'vertical' 
     Label: 
      font_size: '30sp' 
      color: 1,0,0,1 
      text: "Warrior's Revenge" 
     Label: 
      color: 1,0,0,1 
      text: "Click to Continue:" 

<GameScreen> 
    name: 'Game' 
    canvas: 
     Rectangle: 
      size: self.size 
      pos: self.pos 
      source: 'KnightArmor.jpg' 
    BoxLayout: 
     Button: 
      size_hint: .5,.1 
      text: "New Game" 
      on_release: app.root.current = 'Class' 
     Button: 
      size_hint: .5,.1 
      text: "Load Game" 

<ClassScreen> 
    name: 'Class' 
    BoxLayout: 
     orientation: 'vertical' 
     Label: 
      text: "Choose Your Path" 
     Button: 
      text: "Warrior" 
      on_release: app.root.current = "Warrior1" 
     Button: 
      text: "Acrobat" 
      on_release: app.root.current = "Acrobat1" 
     Button: 
      text: "Spell Caster" 
      on_release: app.root.current = "Spell1" 

<Warrior1> 
    name: "Warrior1" 
    canvas: 
     Rectangle: 
      size: self.size 
      pos: self.pos 
      source: "Warrior.jpg" 
    BoxLayout: 
     orientation: 'vertical' 
     Label: 
      font_size: "20sp" 
      text: "Warrior's are physically strong" 
      color: 0,.5,1,1 
     Label: 
      font_size: "20sp" 
      text: "experts in hand to hand combat," 
      color: 0,.5,1,1 
     Label: 
      font_size: "20sp" 
      text: "and knowledgeable in the ways of" 
      color: 0,.5,1,1 
     Label: 
      font_size: "20sp" 
      text: "arms and armor" 
      color: 0,.5,1,1 
     BoxLayout: 
      orientation: 'horizontal' 
      Button: 
       text: "Cancel" 
       on_release: app.root.current = "Class" 
      Button: 
       name: "warrior_confirm" 
       text: "Confirm" 
       on_release: chClass = root.GetChClass('Warrior') 
       on_release: root.build() 

executew.kv：

#: import sm kivy.uix.screenmanager 

<Home>: 
    transition: sm.FadeTransition() 
    HomeScreen: 
    WarriorStats: 

<HomeScreen> 
    name: 'Home' 
    AnchorLayout: 
     Button: 
      text: "Stats" 
      on_release: app.root.current = 'WStats' 

<WarriorStats> 
    name: 'WStats' 
    canvas: 
     Rectangle: 
      size: self.size 
      pos: self.pos 
      source: "Warrior.jpg" 

問題： 當點擊一個名爲「WStats」 executew的WarriorStats屏幕在主屏幕上的統計數據按鈕應該被加載，但我得到的錯誤

Answer 1

「名爲‘WStats’無屏」回答這個問題我想通了，我自己

class HomeScreen(Screen): 
    def switch(self): 
     self.manager.current = "WStats" 

而且在executew：

<HomeScreen> 
    Button: 
     text: "Stats" 
     on_release: root.switch()