Kivy: Sound starts to play, but is 'unstoppable' on Android, but on Windows it works

I got a series of ToggleButtons in kivy, with each loaded with a different sound file. When I try my Code in Windows, everything works as expected, but on Android via the Kivy Launcher, the sound doesn't get stopped.

class AudioButton(ToggleButton):
    sound = ObjectProperty(None)

    def killsound(self, state, dt):
        self.sound.stop()
        if 'Click to stop' in self.text:
            self.text = self.text.strip('\nClick to stop')
            self.height = 60
        else:
            pass

    def on_press(self):
        self.bind(state=self.killsound)
        if self.state == 'normal':
            self.sound.stop()
        else:
            self.sound.play()
            self.text = self.text+'\nClick to stop'
            self.height=240

Here's what it does / should do:

Create an AudioButton instance with a previously specified sound file (also specified: size_hint, font_size, and group(to act as radio buttons)
on_press fires the callback killsound when the state of the Button changes
When the Button is state=='down' the sound plays, and the Text of the Button gets a Caption appended
If the Button is state=='normal' it stops the currently playing sound, if the concerning Button gets pressed, if another Button gets pressed, there's the Callback:

Callback(killsound):

directly stops the sound when the state changes
removes previously added Caption and resizes the Button

On Windows, everything works fine with this code. On Android, however, when the killsound gets called, it removes the caption and resizes the Button, but it won't stop the sound - The old sound (which should be stopped) is still playing, and the new one starts, so I got both sounds playing at the same time, same with more than two sounds.

Any help is appreciated.

Solution

This have been fixed in Kivy 1.4.1. You should talk to us via mailing list, or report a github issue instead of posting here :)