大家好我在使用我创建的python gui应用程序时遇到了一些问题，除了点击传感器模式按钮之外，应用程序运行良好。价值＆＃34; m＆＃34;只是保持与gui-app首次加载并且不刷新时相同。我过去一个月才开始使用tkinter，我很难理解如何实现while循环或类似的东西。我在主要内部放置了一个while循环，所有它似乎只是在我关闭它时重新打开应用程序。该应用程序是在我的raspberryPi上创建的，所以我注释掉了所有gpio和raspberrypi的东西，所以它可以在pc上运行。应用程序基本上是2种模式，一种计时器模式和一种传感器模式，虽然我还没有输入任何一个函数，当值m＆＃34;传感器＆＃34;降到50％以下，但我已经有了一个不同的传感器程序，我将在传感器更新时使用。
请一些人请修复我的应用，以便传感器值m - mpc3008不断刷新。
# made by edwin martin 02/05/2016
#!/usr/bin/python
from datetime import datetime
from threading import Timer
import sys
import time
import threading
import tkinter
from tkinter import *
from time import sleep
from time import sleep
#t1 = 0
#t2 = 0
#t3 = 0
#t4 = 0
class simpleapp_tk(tkinter.Tk, threading.Thread):
def __init__(self,parent):
tkinter.Tk.__init__(self,parent)
self.parent = parent
self.initialize()
self.minsize(width=720, height=180)
self.maxsize(width=720, height=240)
def initialize(self):
self.grid()
#lables
self.labelVariable2 = tkinter.StringVar()
label2 = tkinter.Label(self,textvariable=self.labelVariable2,
anchor="w",fg="white",bg="blue")
label2.grid(column=0,row=0,columnspan=2,sticky='EW')
self.labelVariable2.set(u"ENTER THE HOUR FOR THE START TIME ")
self.entryVariable = tkinter.IntVar()
self.entry = tkinter.Entry (self,textvariable=self.entryVariable)
self.entry.grid(column=0,row=1,sticky='EW')
self.entry.bind("<Return>", self.OnPressEnter)
self.entryVariable.set(u"Enter text here.")
self.labelVariable = tkinter.StringVar()
label = tkinter.Label(self,textvariable=self.labelVariable,
anchor="w",fg="black",bg="yellow")
label.grid(column=0,row=2,columnspan=2,sticky='EW')
self.labelVariable.set(u"")
self.labelVariable4 = tkinter.StringVar()
label4 = tkinter.Label(self,textvariable=self.labelVariable4,
anchor="w",fg="white",bg="blue")
label4.grid(column=0,row=3,columnspan=2,sticky='EW')
self.labelVariable4.set(u"ENTER THE MINUTE FOR THE START TIME")
self.entryVariable2 = tkinter.IntVar()
self.entry = tkinter.Entry(self,textvariable=self.entryVariable2)
self.entry.grid(column=0,row=4,sticky='EW')
self.entry.bind("<Return>", self.OnPressEnter)
self.entryVariable2.set(u"Enter text here.")
self.labelVariable1 = tkinter.StringVar()
label5 = tkinter.Label(self,textvariable=self.labelVariable1,
anchor="w",fg="black",bg="grey")
label5.grid(column=0,row=6,columnspan=2,sticky='EW')
self.labelVariable3 = tkinter.StringVar()
label3 = tkinter.Label(self,textvariable=self.labelVariable3,
anchor="w",fg="black",bg="yellow")
label3.grid(column=0,row=5,columnspan=2,sticky='EW')
#buttons
button = tkinter.Button(self,text=u"ENTER",
command=self.OnButtonClick,anchor="w",fg="black",bg="green")
button.grid(column=1,row=1)
button2 = tkinter.Button(self,text=u"ENTER",
command=self.OnButtonClick2,anchor="w",fg="black",bg="green")
button2.grid(column=1,row=4)
button3 = tkinter.Button(self,text="START TIMER",
command=self.OnButtonClick3,anchor="w",fg="black",bg="green")
button3.grid(column=0,row=6)
button4 = tkinter.Button(self,text="PREVIEW PAGE",
command=self.OnButtonClick4,anchor="w",fg="black",bg="green")
button4.grid(column=1,row=6)
button5 = tkinter.Button(self,text="SENSOR MODE",
command=self.OnButtonClick5,anchor="w",fg="black",bg="purple")
button5.grid(column=0,row=9)
self.labelVariable7 = tkinter.StringVar()
label7 = tkinter.Label(self,textvariable=self.labelVariable7,
anchor="w",fg="black",bg="white")
label7.grid(column=0,row=8,columnspan=2,sticky='EW')
self.labelVariable8 = tkinter.StringVar()
label8 = tkinter.Label(self,textvariable=self.labelVariable8,anchor="w",fg="black",bg="pink")
label8.grid(column=0,row=7,columnspan=2,sticky='EW')
self.grid_columnconfigure(0,weight=1)
self.resizable(True,False)
self.update()
self.geometry(self.geometry())
self.entry.focus_set()
self.entry.selection_range(0, tkinter.END)
def light_on(self):
print ("led on")
self.grid()
self.labelVariable7 = tkinter.StringVar()
label7 = tkinter.Label(self,textvariable=self.labelVariable7,
anchor="w",fg="black",bg="red")
label7.grid(column=0,row=8,columnspan=2,sticky='EW')
self.labelVariable7.set(u"!!WATERING !!")
slep(5)
self.grid()
self.labelVariable7 = tkinter.StringVar()
label7 = tkinter.Label(self,textvariable=self.labelVariable7,
anchor="w",fg="black",bg="white")
label7.grid(column=0,row=8,columnspan=2,sticky='EW')
self.labelVariable7.set(u"")
def OnButtonClick(self):
self.labelVariable.set( "You entered: " + str(self.entryVariable.get()))
self.entry.focus_set()
self.entry.selection_range(0, tkinter.END)
def OnButtonClick2(self):
self.labelVariable3.set( "You entered: " + str(self.entryVariable2.get()))
self.entry.focus_set()
self.entry.selection_range(0, tkinter.END)
def OnButtonClick3(self):
time=datetime.today()
int (self.entryVariable.get())
int (self.entryVariable2.get())
start=time.replace(day=time.day, hour=self.entryVariable.get(), minute=self.entryVariable2.get(), second=0, microsecond=0)
delta_t=start-time
secs=delta_t.seconds+1
timer = Timer(secs,self.light_on)
timer.start()
self.labelVariable8 = tkinter.IntVar()
label8 = tkinter.Label(self,textvariable=self.labelVariable8,
anchor="w",fg="black",bg="pink")
label8.grid(column=0,row=7,columnspan=2,sticky='EW')
if self.entryVariable.get() >= 12:
self.labelVariable8.set( "start time: " + str(self.entryVariable.get())+ ":" + str(self.entryVariable2.get()) + "pm")
elif self.entryVariable.get() < 12:
self.labelVariable8.set( "start time: " + str(self.entryVariable.get())+ ":" + str(self.entryVariable2.get()) + "am")
def OnButtonClick4(self):
for widget in app.winfo_children():
widget.destroy()
self.grid()
self.labelVariable2 = tkinter.StringVar()
label2 = tkinter.Label(self,textvariable=self.labelVariable2,
anchor="w",fg="white",bg="blue")
label2.grid(column=0,row=0,columnspan=2,sticky='EW')
self.labelVariable2.set(u"WATERING START TIME ")
self.labelVariable = tkinter.IntVar()
label = tkinter.Label(self,textvariable=self.labelVariable,
anchor="w",fg="black",bg="pink")
label.grid(column=0,row=1,columnspan=2,sticky='EW')
def OnPressEnter(self,event):
print("enter button pressed\nplease use the mouse instead !")
#NOT WORKING IN THIS SECTION WHERE M IS CALLED , THE VALUE JUST STAYS THE SAME AND DOES NOT REFRESH ???????
def display(self):
self.grid()
self.labelVariable = tkinter.IntVar()
label = tkinter.Label(self,textvariable=self.labelVariable,
anchor="w",fg="black",bg="pink")
label.grid(column=0,row=1,columnspan=2,sticky='EW')
self.labelVariable.set("Water Level:%d%%" % m)
def OnButtonClick5(self):
# THIS IS JUST SHOWING AFTER 2 SECONDS, I WANT TO REFRESH EVERY 2 SECONDS
app.after(200, self.display)
# WORKING OK HERE THIS JUST DISPLAYS A HEADER FOR THE SENSOR PAGE
for widget in app.winfo_children():
widget.destroy()
self.grid()
self.labelVariable2 = tkinter.StringVar()
label2 = tkinter.Label(self,textvariable=self.labelVariable2,
anchor="w",fg="white",bg="blue")
label2.grid(column=0,row=0,columnspan=2,sticky='EW')
self.labelVariable2.set(u"WATERING LEVEL")
# M IS LOADED HERE BUT DOES NOT REFRESH
if __name__ == "__main__":
#m = mcp3008.readadc(5)/10+19
app = simpleapp_tk(None)
app.title('WATER BUDDY APP')
app.mainloop()
最后一部分是问题所在
def display(self):
self.grid()
self.labelVariable = tkinter.IntVar()
label = tkinter.Label(self,textvariable=self.labelVariable,
anchor="w",fg="black",bg="pink")
label.grid(column=0,row=1,columnspan=2,sticky='EW')
self.labelVariable.set("Water Level:%d%%" % m)
def OnButtonClick5(self):
# THIS IS JUST SHOWING AFTER 2 SECONDS, I WANT TO REFRESH EVERY 2 SECONDS
app.after(200, self.display)
# WORKING OK HERE THIS JUST DISPLAYS A HEADER FOR THE SENSOR PAGE
for widget in app.winfo_children():
widget.destroy()
self.grid()
self.labelVariable2 = tkinter.StringVar()
label2 = tkinter.Label(self,textvariable=self.labelVariable2,
anchor="w",fg="white",bg="blue")
label2.grid(column=0,row=0,columnspan=2,sticky='EW')
self.labelVariable2.set(u"WATERING LEVEL")
# M IS LOADED HERE BUT DOES NOT REFRESH
if __name__ == "__main__":
#m = mcp3008.readadc(5)/10+19
app = simpleapp_tk(None)
app.title('WATER BUDDY APP')
app.mainloop()
答案 0 :(得分：0)
WOOOO ty wayne :) 是的，我所要做的就是改变1行并粘贴另一行。 再次感谢你。
def display(self):
import mcp3008
m = mcp3008.readadc(5)/10+19
self.grid()
self.labelVariable = tkinter.IntVar()
label = tkinter.Label(self,textvariable=self.labelVariable,
anchor="w",fg="black",bg="pink")
label.grid(column=0,row=1,columnspan=2,sticky='EW')
self.labelVariable.set("Water Level:%d%%" % m)
self.after(200, self.display)
def OnButtonClick5(self):
app.after(200, self.display)
for widget in app.winfo_children():
widget.destroy()
self.grid()
self.labelVariable2 = tkinter.StringVar()
label2 = tkinter.Label(self,textvariable=self.labelVariable2,
anchor="w",fg="white",bg="blue")
label2.grid(column=0,row=0,columnspan=2,sticky='EW')
self.labelVariable2.set(u"WATERING LEVEL")
if __name__ == "__main__":
app = simpleapp_tk(None)
app.title('WATER BUDDY APP')
app.mainloop()