我正在编写一个小应用程序来复制一些文件。我做了几乎所有我想要的东西，只有3件事：
1）复制选项处于运动状态时移动的进度条。我可以展示它，但它不会做出反应。
我用这个来表明：
self.p = ttk.Progressbar(self, orient=HORIZONTAL, length=300, mode='indeterminate')
self.p.grid(row=5)
然后在按下按钮调用的另一个def中启动它：
self.p.start()
shutil.copytree(self.source_direcotry0, self.cam0)
shutil.copytree(self.source_direcotry1, self.cam1)
shutil.copytree(self.source_direcotry2, self.cam2)
self.p.stop()
不幸的是发生了复制，但条形码根本没有移动。
2）第二个问题与我在应用程序窗口底部显示的信息栏相关联：
self.status = Label(self.master, text="Waiting for process to start...", bd=1, relief=SUNKEN, anchor=W)
self.status.pack(side=BOTTOM, fill=X)
然后当在开头调用相同的复制def时，我有这个：
self.status['text'] = "Files are being copyied, have patience ;)".format(self.status)
并且状态没有改变，这很奇怪，因为在这个def结束时我也有相同的命令来改变状态，这个工作：
self.status['text'] = "Files have been copyied".format(self.status)
3）我似乎无法附上我检查过各种不同选项的图片，但这些图片似乎都没有用，这里展示的图像似乎试图显示某些东西（窗口变大）但是图片不可见：
self.img = ImageTk.PhotoImage(Image.open("az.png"))
self.panel = Label(self, image=self.img, bg="#E6E6E6")
self.display = self.img
self.panel.grid(row=8)
我有点不确定为什么会发生这种情况，为了以防万一，还有更多信息我在这里发布完整代码：
from tkinter import *
from tkinter import ttk
import re
from tkinter import messagebox
from tkinter import filedialog
import ntpath
import os
import shutil
import tkinter.filedialog as fdialog
from send2trash import send2trash
from PIL import Image, ImageTk
#os.system('''/usr/bin/osascript -e 'tell app "Finder" to set frontmost of process "Python" to true' ''')
# Here, we are creating our class, Window, and inheriting from the Frame
# class. Frame is a class from the tkinter module. (see Lib/tkinter/__init__)
class Window(Frame):
# Define settings upon initialization. Here you can specify
def __init__(self, master=None):
# parameters that you want to send through the Frame class.
Frame.__init__(self, master, bg="#E6E6E6")
#reference to the master widget, which is the tk window
self.master = master
#with that, we want to then run init_window, which doesn't yet exist
self.init_window()
def copyy(self):
self.status['text'] = "Files are being copyied, have patience ;)".format(self.status)
self.source_direcotry0= '/Volumes/CAM0/DCIM/100HDDVR'
self.source_direcotry1= '/Volumes/CAM1/DCIM/100HDDVR'
self.source_direcotry2= '/Volumes/CAM2/DCIM/100HDDVR'
self.source_direcotry3= '/Volumes/CAM3/DCIM/100HDDVR'
self.source_direcotry4= '/Volumes/CAM4/DCIM/100HDDVR'
self.source_direcotry5= '/Volumes/CAM5/DCIM/100HDDVR'
self.source_direcotry6= '/Volumes/CAM6/DCIM/100HDDVR'
self.source_direcotry7= '/Volumes/CAM7/DCIM/100HDDVR'
self.source_direcotry8= '/Volumes/CAM8/DCIM/100HDDVR'
self.source_direcotry9= '/Volumes/CAM9/DCIM/100HDDVR'
self.source_direcotry10= '/Volumes/CAM10/DCIM/100HDDVR'
self.source_direcotry11= '/Volumes/CAM11/DCIM/100HDDVR'
self.path0="recording/CAM0"
self.path1="recording/CAM1"
self.path2="recording/CAM2"
self.path3="recording/CAM3"
self.path4="recording/CAM4"
self.path5="recording/CAM5"
self.path6="recording/CAM6"
self.path7="recording/CAM7"
self.path8="recording/CAM8"
self.path9="recording/CAM9"
self.path10="recording/CAM10"
self.path11="recording/CAM11"
self.cam0=os.path.join(self.Destination.get(), self.path0)
self.cam1=os.path.join(self.Destination.get(), self.path1)
self.cam2=os.path.join(self.Destination.get(), self.path2)
self.cam3=os.path.join(self.Destination.get(), self.path3)
self.cam4=os.path.join(self.Destination.get(), self.path4)
self.cam5=os.path.join(self.Destination.get(), self.path5)
self.cam6=os.path.join(self.Destination.get(), self.path6)
self.cam7=os.path.join(self.Destination.get(), self.path7)
self.cam8=os.path.join(self.Destination.get(), self.path8)
self.cam9=os.path.join(self.Destination.get(), self.path9)
self.cam10=os.path.join(self.Destination.get(), self.path10)
self.cam11=os.path.join(self.Destination.get(), self.path11)
self.p.start()
shutil.copytree(self.source_direcotry0, self.cam0)
shutil.copytree(self.source_direcotry1, self.cam1)
shutil.copytree(self.source_direcotry2, self.cam2)
# shutil.copytree(self.source_direcotry3, self.cam3)
# shutil.copytree(self.source_direcotry4, self.cam4)
# shutil.copytree(self.source_direcotry5, self.cam5)
# shutil.copytree(self.source_direcotry6, self.cam6)
# shutil.copytree(self.source_direcotry7, self.cam7)
# shutil.copytree(self.source_direcotry8, self.cam8)
# shutil.copytree(self.source_direcotry9, self.cam9)
# shutil.copytree(self.source_direcotry10, self.cam10)
# shutil.copytree(self.source_direcotry11, self.cam11)
self.p.stop()
self.status['text'] = "Files have been copyied".format(self.status)
def deletee(self):
send2trash('/Volumes/CAM0/DCIM')
send2trash('/Volumes/CAM1/DCIM')
send2trash('/Volumes/CAM2/DCIM')
# send2trash('/Volumes/CAM3/DCIM')
# send2trash('/Volumes/CAM4/DCIM')
# send2trash('/Volumes/CAM5/DCIM')
# send2trash('/Volumes/CAM6/DCIM')
# send2trash('/Volumes/CAM7/DCIM')
# send2trash('/Volumes/CAM8/DCIM')
# send2trash('/Volumes/CAM9/DCIM')
# send2trash('/Volumes/CAM10/DCIM')
# send2trash('/Volumes/CAM11/DCIM')
self.status['text'] = "Files have been moved to trash".format(self.status)
def client_exit(self):
exit()
def about_popup(self):
messagebox.showinfo("About", "This is software used to copy or delete files in bulk from the Absolute Zero VR camera")
#Creation of init_window
def init_window(self):
self.Source=StringVar()
self.Destination=StringVar()
# changing the title of our master widget
self.master.title("AZ Data Extractor")
# allowing the widget to take the full space of the root window
self.pack(fill=BOTH, expand=1)
#Creating the menu
self.menubar = Menu(self.master)
#Creating submenues
self.filemenu = Menu(self.menubar, tearoff=0)
self.filemenu.add_command(label="Exit", command=root.quit)
self.menubar.add_cascade(label="File", menu=self.filemenu)
self.helpmenu = Menu(self.menubar, tearoff=0)
self.helpmenu.add_command(label="About", command=self.about_popup)
self.menubar.add_cascade(label="Help", menu=self.helpmenu)
#Displaying the menu
root.config(menu=self.menubar)
#Creating the intro label
l_instruction = Label(self, justify=CENTER, compound=TOP, text="Choose the destination for the copied files \n and press 'Go!' to start copyting", bg="#E6E6E6")
l_instruction.grid(columnspan=2, ipady=10)
l_instruction = Label(self, justify=CENTER, compound=TOP, text="Press 'Delete' to move all files \n from the camera to the trash", bg="#E6E6E6")
l_instruction.grid(row=6, columnspan=2, ipady=10)
# ttk.Style().configure('green/black.TButton', foreground='green', background='black')
#Creating the button
MyDestination=Entry(self, textvariable=self.Destination, bg="#E6E6E6")
MyDestination.grid(row=2, columnspan=2, ipady=10)
uploadButton = Button(self, text="Choose destination folder",command=lambda:self.Destination.set(fdialog.askdirectory()))
uploadButton.grid(row=3, columnspan=2, ipady=10)
goButton = Button(self, text="Go!",command=self.copyy)
goButton.grid(row=4, columnspan=2, ipady=10)
delButton = Button(self, text="Delete",command=self.deletee)
delButton.grid(row=7, columnspan=2, ipady=10)
self.p = ttk.Progressbar(self, orient=HORIZONTAL, length=300, mode='indeterminate')
self.p.grid(row=5)
self.img = ImageTk.PhotoImage(Image.open("az.png"))
self.panel = Label(self, image=self.img, bg="#E6E6E6")
self.display = self.img
self.panel.grid(row=8)
#resizing configuration
self.grid_columnconfigure(0,weight=1)
self.grid_columnconfigure(1,weight=1)
self.grid_rowconfigure(0,weight=1)
self.grid_rowconfigure(1,weight=1)
self.grid_rowconfigure(2,weight=1)
self.grid_rowconfigure(3,weight=1)
self.grid_rowconfigure(4,weight=1)
self.grid_rowconfigure(5,weight=1)
self.grid_rowconfigure(6,weight=1)
self.grid_rowconfigure(7,weight=1)
self.grid_rowconfigure(8,weight=1)
self.grid_rowconfigure(9,weight=1)
self.grid_rowconfigure(10,weight=1)
#status Bar
self.status = Label(self.master, text="Waiting for process to start...", bd=1, relief=SUNKEN, anchor=W)
self.status.pack(side=BOTTOM, fill=X)
# root window created. Here, that would be the only window, but you can later have windows within windows.
root = Tk()
root.resizable(width=False,height=False);
# root.configure(background='black');
# fm = Frame(root, width=300, height=200, bg="blue")
# fm.pack(side=TOP, expand=NO, fill=NONE)
#root.geometry("230x340")
#creation of an instance
app = Window(root)
#mainloop
root.mainloop()
编辑： 正如同时出现的另外一个问题我似乎无法改变按钮的背景颜色和进入区域周围的框架。我读到它可能是因为使用MacOS平台，可能是吗？任何解决方法？
答案 0 :(得分：1)
我压缩了我在我的一个旧项目中工作的装载栏。我想出来的唯一方法是调用进度条处理新线程中的调用，并将工作密集型函数从此线程调用到另一个新线程中。
使用单独的线程处理UI线程以外的UI元素是不好的做法，包括启动和停止进度条;但它确实有效，而且我已经使用这个项目进行了相当繁重的处理，现在几个月没有问题。
这里的进度条工作在一个小脚本中，在W10 64-Bit上使用Python 3.5.2
from tkinter import *
import tkinter.ttk as ttk
import threading
import time
class Main_Frame(object):
def __init__(self, top=None):
# save root reference
self.top = top
# set title bar
self.top.title("Loading bar example")
# start button calls the "initialization" function bar_init, you can pass a variable in here if desired
self.start_button = ttk.Button(top, text='Start bar', command=lambda: self.bar_init(2500))
self.start_button.pack()
# the progress bar will be referenced in the "bar handling" and "work" threads
self.load_bar = ttk.Progressbar(top)
self.load_bar.pack()
# run mainloop
self.top.mainloop()
def bar_init(self, var):
# first layer of isolation, note var being passed along to the self.start_bar function
# target is the function being started on a new thread, so the "bar handler" thread
self.start_bar_thread = threading.Thread(target=self.start_bar, args=(var,))
# start the bar handling thread
self.start_bar_thread.start()
def start_bar(self, var):
# the load_bar needs to be configured for indeterminate amount of bouncing
self.load_bar.config(mode='indeterminate', maximum=100, value=0)
# 8 here is for speed of bounce
self.load_bar.start(8)
# start the work-intensive thread, again a var can be passed in here too if desired
self.work_thread = threading.Thread(target=self.work_task, args=(var,))
self.work_thread.start()
# close the work thread
self.work_thread.join()
# stop the indeterminate bouncing
self.load_bar.stop()
# reconfigure the bar so it appears reset
self.load_bar.config(value=0, maximum=0)
def work_task(self, wait_time):
for x in range(wait_time):
time.sleep(0.001)
if __name__ == '__main__':
# create root window
root = Tk()
# call Main_Frame class with reference to root as top
Main_Frame(top=root)