tkinter界面卡死的解決辦法

 0、如果點擊按鈕，運行了一個比較耗時的操作，那么界面會卡死

import tkinter as tk
import time

def onclick(text, i):
   time.sleep(3)
   text.insert(tk.END, '按了第{}個按鈕\n'.format(i))

   
   
root = tk.Tk()

text = tk.Text(root)
text.pack()

tk.Button(root, text='按鈕1', command=lambda :onclick(text,1)).pack()
tk.Button(root, text='按鈕2', command=lambda :onclick(text,2)).pack()

root.mainloop()

 

解決辦法：

方式一、直接開線程

import tkinter as tk
import time
import threading


songs = ['愛情買賣','朋友','回家過年','好日子']
movies = ['阿凡達','猩球崛起']

def music(songs):
    global text # 故意的，注意與movie的區別
    for s in songs:
        text.insert(tk.END, "聽歌曲：%s \t-- %s\n" %(s, time.ctime()))
        time.sleep(3)

def movie(movies, text):
    for m in movies:
        text.insert(tk.END, "看電影：%s \t-- %s\n" %(m, time.ctime()))
        time.sleep(5)

    
def thread_it(func, *args):
    '''將函數打包進線程'''
    # 創建
    t = threading.Thread(target=func, args=args) 
    # 守護 !!!
    t.setDaemon(True) 
    # 啟動
    t.start()
    # 阻塞--卡死界面！
    # t.join()


root = tk.Tk()

text = tk.Text(root)
text.pack()

tk.Button(root, text='音樂', command=lambda :thread_it(music, songs)).pack()
tk.Button(root, text='電影', command=lambda :thread_it(movie, movies, text)).pack()

root.mainloop()

 

方式二、繼承 threading.Thread 類

import tkinter as tk
import time
import threading


songs = ['愛情買賣','朋友','回家過年','好日子']
movies = ['阿凡達','猩球崛起']

def music(songs):
    global text # 故意的，注意與movie的區別
    for s in songs:
        text.insert(tk.END, "聽歌曲：%s \t-- %s\n" %(s, time.ctime()))
        time.sleep(3)

def movie(movies, text):
    for m in movies:
        text.insert(tk.END, "看電影：%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()    # 在這里開始
        
    def run(self):
        self.func(*self.args)
    

root = tk.Tk()

text = tk.Text(root)
text.pack()

tk.Button(root, text='音樂', command=lambda :MyThread(music, songs)).pack()
tk.Button(root, text='電影', command=lambda :MyThread(movie, movies, text)).pack()

root.mainloop()

 

三、或者，搞一個界面類：

import tkinter as tk
import time
import threading

songs = ['愛情買賣','朋友','回家過年','好日子'] 
films = ['阿凡達','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='音樂', command=lambda :self.thread_it(self.music, songs)).pack(expand=True, side=tk.RIGHT) # 注意lambda語句的作用！
        tk.Button(self, text='電影', command=lambda :self.thread_it(self.movie, films)).pack(expand=True, side=tk.LEFT)
        

    # 邏輯：聽音樂
    def music(self, songs):
        for x in songs:
            self.text.insert(tk.END, "聽歌曲：%s \t-- %s\n" %(x, time.ctime()))
            print("聽歌曲：%s \t-- %s" %(x, time.ctime()))
            time.sleep(3)

    # 邏輯：看電影
    def movie(self, films):
        for x in films:
            self.text.insert(tk.END, "看電影：%s \t-- %s\n" %(x, time.ctime()))
            print("看電影：%s \t-- %s" %(x, time.ctime()))
            time.sleep(5)

    # 打包進線程（耗時的操作）
    @staticmethod
    def thread_it(func, *args):
        t = threading.Thread(target=func, args=args) 
        t.setDaemon(True)   # 守護--就算主界面關閉，線程也會留守后台運行（不對!）
        t.start()           # 啟動
        # t.join()          # 阻塞--會卡死界面！
        
        
app = Application()
app.mainloop()