解决python tkinter界面卡死的问题

如果点击按钮，运行了一个比较耗时的操作，那么界面会卡死。importtkinterastkimporttimedefonclic

如果点击按钮，运行了一个比较耗时的操作，那么界面会卡死。

import tkinter as tk
import time
 
def onclick(text, i):
 time.sleep(3)
 text.insert(tk.END, '按了第{}个按钮\n'.format(i))
 
 
 
root = tk.Tk()
 
text = tk.Text(root)
text.pack()
 
tk.Button(root, text='按钮1', command=lambda :onclick(text,1)).pack()
tk.Button(root, text='按钮2', command=lambda :onclick(text,2)).pack()
 
root.mainloop()

解决办法：

方式一、直接开线程

import tkinter as tk
import time
import threading
 
 
songs = ['爱情买卖','朋友','回家过年','好日子']
movies = ['阿凡达','猩球崛起']
 
def music(songs):
 global text # 故意的，注意与movie的区别
 for s in songs:
 text.insert(tk.END, "听歌曲：%s \t-- %s\n" %(s, time.ctime()))
 time.sleep(3)
 
def movie(movies, text):
 for m in movies:
 text.insert(tk.END, "看电影：%s \t-- %s\n" %(m, time.ctime()))
 time.sleep(5)
 
 
def thread_it(func, *args):
 '''将函数打包进线程'''
 # 创建
 t = threading.Thread(target=func, args=args) 
 # 守护 !!!
 t.setDaemon(True) 
 # 启动
 t.start()
 # 阻塞--卡死界面！
 # t.join()
 
 
root = tk.Tk()
 
text = tk.Text(root)
text.pack()
 
tk.Button(root, text='音乐', command=lambda :thread_it(music, songs)).pack()
tk.Button(root, text='电影', command=lambda :thread_it(movie, movies, text)).pack()
 
root.mainloop()

方式二、继承 threading.Thread 类

import tkinter as tk
import time
import threading
 
 
songs = ['爱情买卖','朋友','回家过年','好日子']
movies = ['阿凡达','猩球崛起']
 
def music(songs):
 global text # 故意的，注意与movie的区别
 for s in songs:
 text.insert(tk.END, "听歌曲：%s \t-- %s\n" %(s, time.ctime()))
 time.sleep(3)
 
def movie(movies, text):
 for m in movies:
 text.insert(tk.END, "看电影：%s \t-- %s\n" %(m, time.ctime()))
 time.sleep(5)
 
class MyThread(threading.Thread):
 def __init__(self, func, *args):
 super().__init__()
 
 self.func = func
 self.args = args
 
 self.setDaemon(True)
 self.start() # 在这里开始
 
 def run(self):
 self.func(*self.args)
 
 
root = tk.Tk()
 
text = tk.Text(root)
text.pack()
 
tk.Button(root, text='音乐', command=lambda :MyThread(music, songs)).pack()
tk.Button(root, text='电影', command=lambda :MyThread(movie, movies, text)).pack()
 
root.mainloop()

三、或者，搞一个界面类：

import tkinter as tk
import time
import threading
 
songs = ['爱情买卖','朋友','回家过年','好日子'] 
films = ['阿凡达','猩球崛起']
 
 
class Application(tk.Tk):
def __init__(self):
 super().__init__()
 
 self.createUI()
 
 # 生成界面
 def createUI(self):
 self.text = tk.Text(self)
 self.text.pack()
 
 tk.Button(self, text='音乐', command=lambda :self.thread_it(self.music, songs)).pack(expand=True, side=tk.RIGHT) # 注意lambda语句的作用！
 tk.Button(self, text='电影', command=lambda :self.thread_it(self.movie, films)).pack(expand=True, side=tk.LEFT)
 
 
 # 逻辑：听音乐
 def music(self, songs):
 for x in songs:
 self.text.insert(tk.END, "听歌曲：%s \t-- %s\n" %(x, time.ctime()))
 print("听歌曲：%s \t-- %s" %(x, time.ctime()))
 time.sleep(3)
 
 # 逻辑：看电影
 def movie(self, films):
 for x in films:
 self.text.insert(tk.END, "看电影：%s \t-- %s\n" %(x, time.ctime()))
 print("看电影：%s \t-- %s" %(x, time.ctime()))
 time.sleep(5)
 
 # 打包进线程（耗时的操作）
 @staticmethod
 def thread_it(func, *args):
 t = threading.Thread(target=func, args=args) 
 t.setDaemon(True) # 守护--就算主界面关闭，线程也会留守后台运行（不对!）
 t.start() # 启动
 # t.join() # 阻塞--会卡死界面！
 
 
app = Application()
app.mainloop()

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