window_sdl2.py: TextInput crashes on numeric input in Android

[ScissorHill]

Versions

• Python: 2.7.6
• OS: Ubuntu 14.04
• Kivy: 1.9.2
• Kivy installation method: kivy-daily PPA

Description

Trying to use TextInput on Android. Works perfectly on Desktop, but app crashes when attempting to input anything on Android.

Code and Logs

Example taken from the Kivy Basic documentation:

from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.label import Label
from kivy.uix.textinput import TextInput


class LoginScreen(GridLayout):

    def __init__(self, **kwargs):
        super(LoginScreen, self).__init__(**kwargs)
        self.cols = 2
        self.add_widget(Label(text='User Name'))
        self.username = TextInput(multiline=False)
        self.add_widget(self.username)
        self.add_widget(Label(text='password'))
        self.password = TextInput(password=True, multiline=False)
        self.add_widget(self.password)


class MyApp(App):

    def build(self):
        return LoginScreen()


if __name__ == '__main__':
    MyApp().run()

The app runs on Android, the keyboard also comes up. But crashes on typing anything. Output of $adb logcat | grep python (last few lines only):

03-07 10:19:48.972  7842  7857 I python  : [INFO   ] [GL          ] Texture max units <16>
03-07 10:19:48.976  7842  7857 I python  : [INFO   ] [Window      ] auto add sdl2 input provider
03-07 10:19:48.978  7842  7857 I python  : [INFO   ] [Window      ] virtual keyboard not allowed, single mode, not docked
03-07 10:19:48.981  7842  7857 W linker  : /data/data/org.test.textinput_tester/files/app/lib/python2.7/site-packages/jnius/jnius.so: is missing DT_SONAME will use basename as a replacement: "jnius.so"
03-07 10:19:49.379  7842  7857 I python  : [WARNING] [Base        ] Unknown <android> provider
03-07 10:19:49.379  7842  7857 I python  : [INFO   ] [Base        ] Start application main loop
03-07 10:19:49.383  7842  7857 I python  : [INFO   ] [GL          ] NPOT texture support is available
03-07 10:19:49.386  7842  7857 I python  : [ERROR  ] [Base        ] Failed to import "android" module. Could not remove android presplash.
03-07 10:20:14.940  7842  7857 I python  : [INFO   ] [Base        ] Leaving application in progress...
03-07 10:20:14.941  7842  7857 I python  :  Traceback (most recent call last):
03-07 10:20:14.942  7842  7857 I python  :    File "/home/guru/EclipseWorkspace1/ScratchArea/.buildozer/android/app/main.py", line 27, in <module>
03-07 10:20:14.944  7842  7857 I python  :    File "/home/guru/EclipseWorkspace1/ScratchArea/.buildozer/android/platform/build/dists/textinput_tester/private/lib/python2.7/site-packages/kivy/app.py", line 828, in run
03-07 10:20:14.946  7842  7857 I python  :    File "/home/guru/EclipseWorkspace1/ScratchArea/.buildozer/android/platform/build/dists/textinput_tester/private/lib/python2.7/site-packages/kivy/base.py", line 504, in runTouchApp
03-07 10:20:14.947  7842  7857 I python  :    File "/home/guru/EclipseWorkspace1/ScratchArea/.buildozer/android/platform/build/dists/textinput_tester/private/lib/python2.7/site-packages/kivy/core/window/window_sdl2.py", line 658, in mainloop
03-07 10:20:14.948  7842  7857 I python  :    File "/home/guru/EclipseWorkspace1/ScratchArea/.buildozer/android/platform/build/dists/textinput_tester/private/lib/python2.7/site-packages/kivy/core/window/window_sdl2.py", line 580, in _mainloop
03-07 10:20:14.950  7842  7857 I python  :  AttributeError: 'LogFile' object has no attribute 'encoding'
03-07 10:20:15.002  7842  7857 I python  : Python for android ended.

Tested on Android 6.0.1, and 5.1.1 (separate devices). FWIW, @Tommstein confirmed the same issue on IRC.

The error seems to be coming from line#580 added in commit#9246486.

[Fogapod]

#5045

[KeyWeeUsr]

@inclement possibly a missing thing for sdl2 start.c and other start.c files? Maybe just an alias would be enough? Or setting it to UTF8 as it's a linux anyway? I experienced encoding issues only on Windows, so... 🐱

[inclement]

I guess so - it would be simplest to just copy the encoding from the normal sys.stdout object, or even to forward arbitrary attribute access.

Edit: Or maybe that wouldn't be the right thing to do, I'm not sure.

[Fogapod]

After last commit TextInput start ignoring all entering buttons at some moment instead of crash the whole app. I need to deselect it and select again to continue entering symbols

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[Julian-O]

Appears to be fixed - window_sdl2.py checks if the attribute is present.

Closing as fixed, but please let us know if it is still happening.