我设置了一个多页tkinter应用程序gui,如下所示:
class App(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
tk.Tk.iconbitmap(self, "asd")
tk.Tk.wm_title(self, "asd")
self.title_font = tkfont.Font(family='Helvetica', size=18, weight="bold", slant="italic")
# Creates a root frame that will be used as a parent frame for the other frames
root = tk.Frame(self)
root.pack(side="bottom", fill="both", expand=True)
root.grid_rowconfigure(0, weight=1)
root.grid_columnconfigure(0, weight=1)
self.frames = {}
for F in (asd1):
page_name = F.__name__
frame = F(parent=root, controller=self)
self.frames[page_name] = frame
# put all of the pages in the same location;
# the one on the top of the stacking order
# will be the one that is visible.
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame("asd1")
def show_frame(self, page_name):
"""Show a frame for the given page name"""
frame = self.frames[page_name]
frame.tkraise()
class asd1(tk.Frame):
def refresh(self):
#dt.prints just searches in a mysql database and returns a nested array
array = dt.prints(mydb)
data_size = len(array)
self.tree.delete(*self.tree.get_children()
self.tree.insert("", 0, values=(array[random.randrange(0, data_size)]))
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.controller = controller
+extra code where treeview is placed
我试图用after方法刷新数据,但我不知道怎么做
使用我在互联网上找到的方法,它只在启动时加载treeview或在启动时冻结应用程序。如果我只是用一个按钮调用刷新函数,它就可以正常工作。 有没有办法每x秒自动刷新一次数据
编辑:
我尝试了很多方法:在课堂外这样称呼它:
if __name__ == "__main__":
app = RaktarApp()
app.geometry("1280x720")
app.after(1000,app.refresh())
app.mainloop()
在我收拾好树景后叫它
treeview.after(1000,refresh())
在一些页面上,我发现它也应该在刷新功能中,但这只是冻结了窗口
def refresh(self):
#dt.prints just searches in a mysql database and returns a nested array
array = dt.prints(mydb)
data_size = len(array)
self.tree.delete(*self.tree.get_children()
self.tree.insert("", 0, values=(array[random.randrange(0, data_size)]))
self.tree.after(1000,self.refresh())
我还尝试在主类中放置refresh函数
在stovfl的注释中,我发现了一条注释,他们说after方法没有将函数作为第二个参数调用,因此()将我的代码弄乱了。 为此更改了刷新功能,一切正常
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