tkinter界面卡死的解决办法

Posted 2020-06-13

 0、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()