Python 2.7 Tkinter 中的 Funcanimation 停止

Question

我已经使用 tkinter 和 pyhton2.7 构建了一个 GUI，我已经成功地在我的 GUI 中绘制来自我的串行端口的数据（使用 Matplotlib）。我的代码快照如下：

""All required import was done here"" 

x = []
adc_data = []
q = [0]


f = plt.Figure(figsize = (9,5), dpi = 100)
ax = f.add_subplot(111)


class ADC_Ref_Data(tk.Tk):

    def __init__(self, *args, **kwargs):

        tk.Tk.__init__(self, *args, **kwargs)

        tk.Tk.wm_geometry(self, '900x600+200+150')
        tk.Tk.wm_title(self, "ADC Referene")


        container = tk.Frame(self)
        container.pack(side="top", fill="both", expand = True)
        container.grid_rowconfigure(0, weight=1)
        container.grid_columnconfigure(0, weight=1)

        self.frames = {}

        frame = StartPage(container, self)

        self.frames[StartPage] = frame

        frame.grid(row=0, column=0, sticky = "nsew")

        self.show_frame(StartPage)

    def show_frame(self, cont):

        frame = self.frames[cont]
        frame.tkraise()


class StartPage(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self,parent)


        self.button4 = ttk.Button(self, text="Start",
                        command=lambda: self.start())
        self.button4.place(relx = 0.03, rely = 0.95,  height = 30 , width = 80 , anchor = 'sw')


        self.canvas = FigureCanvasTkAgg(f, self)
        self.canvas.show()
        self.canvas.get_tk_widget().place(relx = 0.5, rely = 0.48, relwidth = 1, relheight = 0.8, anchor = 'center' )



    def animate(self,i):
        while self.button4['text'] == 'Pause':
            self.ser.write(str(chr(250)))
            data = self.ser.read(1)
            data1 = self.ser.read(1)

            LSB = ord(data)
            MSB = ord(data1)

            dec = 256*MSB+LSB
            q[0] = q[0]+1
            x.append(q[0]) #adding data to list
            adc_data.append(dec) #adding data to list
            plt.pause(1)

            ax.clear()
            a = ax.plot(x,adc_data,'^r')

    def start(self):
        if self.button4['text'] == 'Start':
            ani = animation.FuncAnimation(f, self.animate,init_func=self.init,frames = 10, interval=1000)#,blit = True)
            f.canvas.show()


app = ADC_Ref_Data()
app.mainloop()

从上面的代码中你可以看到，每当我按下我的 Gui 上的开始按钮时，它都会调用一个函数“Start”，在该函数中调用 Funcanimation 并连续绘制一个图形（在无限循环中）。现在我想在按下停止按钮时停止这个 Funcanimation。

如何停止正在运行的 Funcanimation？

请帮我解决这个问题。

提前致谢

Answer 1

试试 ani.event_source.stop() ani.event_source.start()