首页 > 解决方案 > 为什么 Gio.Notification 没有在 Python 中显示?

问题描述

我想使用我的 Gtk 应用程序显示通知,但是当我在下面运行我的代码时,我一切正常,但通知没有显示,即使我单击按钮也是如此。我尝试使用此答案中建议的桌面文件来运行它,但它仍然无法正常工作。这是我的代码:

import gi
import sys

gi.require_version("Gtk", "3.0")
from gi.repository import Gio, Gtk

class App(Gtk.Application):
    
    def __init__(self, *args, **kwargs):
        Gtk.Application.__init__(self, *args, application_id="org.example.myapp", **kwargs)
        self.window = None

    def do_startup(self):
        Gtk.Application.do_startup(self)

    def do_activate(self):
        if not self.window:
            self.button = Gtk.Button(label="send notification")
            self.button.connect("clicked", self.notnotnot)
            self.window = Gtk.ApplicationWindow(application=self)
            self.window.add(self.button)
            self.window.show_all()
            self.window.present()

    def notnotnot(self, *args):
        notification = Gio.Notification()
        notification.set_body("Hello!")
        self.send_notification(None, notification)

if __name__ == "__main__":
    app = App()
    app.run(sys.argv)

这是桌面文件org.example.myapp.desktop

[Desktop Entry]
Type=Application
Name=My Application
Exec=python3 /home/user/programs/python/testing/SO/problem_why_is_gtk....py
Terminal=true
X-GNOME-UsesNotifications=true

标签: pythonnotificationsgtk

解决方案


我发现只需将优先级设置为高就会出现通知。请注意,Gio.Notification.set_urgent()已弃用。你需要使用Gio.Notification.set_priority(). 这是带有相应标记的添加行的代码:

import gi
import sys

gi.require_version("Gtk", "3.0")
from gi.repository import Gio, Gtk

class App(Gtk.Application):
    
    def __init__(self, *args, **kwargs):
        Gtk.Application.__init__(self, *args, application_id="org.example.myapp", **kwargs)
        self.window = None

    def do_startup(self):
        Gtk.Application.do_startup(self)

    def do_activate(self):
        if not self.window:
            self.button = Gtk.Button(label="send notification")
            self.button.connect("clicked", self.notnotnot)
            self.window = Gtk.ApplicationWindow(application=self)
            self.window.add(self.button)
            self.window.show_all()
            self.window.present()

    def notnotnot(self, *args):
        notification = Gio.Notification()
        notification.set_body("Hello!")
        notification.set_priority(Gio.NotificationPriority.HIGH) ### ADDED LINE
        self.send_notification(None, notification)

if __name__ == "__main__":
    app = App()
    app.run(sys.argv)

如果您指定字符串 id 而不是None在发送通知时 ( self.send_notification("my_notif_id", notification)),您可以稍后使用 撤回通知self.withdraw_notification("my_notif_id")


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