解决python tkinter界面卡死的问题

Python  /  管理员 发布于 7年前   166

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 tkimport 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 tkimport timeimport 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 tkimport timeimport 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 tkimport timeimport 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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