using locale module in toga (android).

[tct123]

Hello, how can I recognize the current language with locale.getlocale()?
When i try it on android, it only returns ('en_US', 'UTF-8'), even if default language was set to an other language.

[mhsmith]

I agree this would be useful, so I've created chaquo/chaquopy#1150 to track it.

Meanwhile, you can do this:

str(app._impl.native.getConfiguration().getResources().getLocales().get(0))

... where app is your toga.App object. This will return a string in the format en_US.

[tct123]

It is still not working.
Linux:

Traceback (most recent call last):
  File "/home/anonym/tetetetretr/build/tetetetretr/MYSYSTEM/MYSYSTEM/tetetetretr-0.0.1/usr/lib/tetetetretr/app_packages/toga_gtk/app.py", line 67, in gtk_startup
    self.interface._startup()
  File "/home/anonym/tetetetretr/build/tetetetretr/MYSYSTEM/MYSYSTEM/tetetetretr-0.0.1/usr/lib/tetetetretr/app_packages/toga/app.py", line 636, in _startup
    self.startup()
  File "/home/anonym/tetetetretr/build/tetetetretr/MYSYSTEM/MYSYSTEM/tetetetretr-0.0.1/usr/lib/tetetetretr/app/tetetetretr/app.py", line 17, in startup
    app._impl.native.getResources().getConfiguration().getLocales().get(0)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'Application' object has no attribute 'getResources'

Android:

[tetetetretr] Starting app on XXXX XXXXX

[tetetetretr] Installing app...
Stopping old versions of the app... done
Installing new app version... done
Launching app... done

[tetetetretr] Following device log output (type CTRL-C to stop log)...
===========================================================================
--------- beginning of main
I/ple.tetetetretr: Late-enabling -Xcheck:jni
I/ple.tetetetretr: Using CollectorTypeCC GC.
D/ActivityThread: setConscryptValidator
D/ActivityThread: setConscryptValidator - put
D/CompatibilityChangeReporter: Compat change id reported: 171979766; UID 10305; state: ENABLED
D/CompatibilityChangeReporter: Compat change id reported: 242716250; UID 10305; state: ENABLED
W/ziparchive: Unable to open '/data/app/~~7AVODu2CkASEy_aqruvT3g==/com.example.tetetetretr-SjFl16OIucyaWUjS1WSEHg==/base.dm': No such file or directory
W/ziparchive: Unable to open '/data/app/~~7AVODu2CkASEy_aqruvT3g==/com.example.tetetetretr-SjFl16OIucyaWUjS1WSEHg==/base.dm': No such file or directory
D/nativeloader: Configuring clns-4 for other apk /data/app/~~7AVODu2CkASEy_aqruvT3g==/com.example.tetetetretr-SjFl16OIucyaWUjS1WSEHg==/base.apk. target_sdk_version=34, uses_libraries=, library_path=/data/app/~~7AVODu2CkASEy_aqruvT3g==/com.example.tetetetretr-SjFl16OIucyaWUjS1WSEHg==/lib/arm64:/data/app/~~7AVODu2CkASEy_aqruvT3g==/com.example.tetetetretr-SjFl16OIucyaWUjS1WSEHg==/base.apk!/lib/arm64-v8a, permitted_path=/data:/mnt/expand:/data/user/0/com.example.tetetetretr
V/GraphicsEnvironment: Currently set values for:
V/GraphicsEnvironment:   angle_gl_driver_selection_pkgs=[]
V/GraphicsEnvironment:   angle_gl_driver_selection_values=[]
V/GraphicsEnvironment: ANGLE GameManagerService for com.example.tetetetretr: false
V/GraphicsEnvironment: com.example.tetetetretr is not listed in per-application setting
V/GraphicsEnvironment: App is not on the allowlist for updatable production driver.
I/AdrenoGLES-0: QUALCOMM build                   : 12ae96cb63, I409bbc12eb
I/AdrenoGLES-0: Build Date                       : 09/13/23
I/AdrenoGLES-0: OpenGL ES Shader Compiler Version: EV031.35.01.10
I/AdrenoGLES-0: Local Branch                     : 
I/AdrenoGLES-0: Remote Branch                    : 
I/AdrenoGLES-0: Remote Branch                    : 
I/AdrenoGLES-0: Reconstruct Branch               : 
I/AdrenoGLES-0: Build Config                     : S P 10.0.7 AArch64
I/AdrenoGLES-0: Driver Path                      : /vendor/lib64/egl/libGLESv2_adreno.so
I/AdrenoGLES-0: PFP: 0x016dc112, ME: 0x00000000
D/AppCompatDelegate: Checking for metadata for AppLocalesMetadataHolderService : Service not found
D/MainActivity: onCreate() start
I/DecorView: setWindowBackground: isPopOver=false color=ffffffff d=android.graphics.drawable.ColorDrawable@1ee9f23
W/ple.tetetetretr: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (unsupported, reflection, allowed)
W/ple.tetetetretr: Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (unsupported, reflection, allowed)
D/CompatibilityChangeReporter: Compat change id reported: 210923482; UID 10305; state: ENABLED
D/MainActivity: Starting Python
W/native.stderr: Could not find platform independent libraries <prefix>
W/native.stderr: Could not find platform dependent libraries <exec_prefix>
W/asset   : seek out of range: want -20, end=22
D/MainActivity: Running main module tetetetretr
I/ple.tetetetretr: Background concurrent copying GC freed 181981(10106KB) AllocSpace objects, 7(204KB) LOS objects, 67% free, 2994KB/9138KB, paused 8.195ms,34us total 100.291ms
I/python.stdout: WARNING: Can't find app icon; falling back to default icon
I/python.stdout: Python app launched & stored in Android Activity class
D/AndroidRuntime: Shutting down VM
--------- beginning of crash
E/AndroidRuntime: FATAL EXCEPTION: main
E/AndroidRuntime: Process: com.example.tetetetretr, PID: 3973
E/AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.tetetetretr/org.beeware.android.MainActivity}: com.chaquo.python.PyException: AttributeError: 'NoneType' object has no attribute 'getResources'
E/AndroidRuntime:   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:4164)
E/AndroidRuntime:   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:4322)
E/AndroidRuntime:   at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:103)
E/AndroidRuntime:   at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:139)
E/AndroidRuntime:   at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:96)
E/AndroidRuntime:   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2685)
E/AndroidRuntime:   at android.os.Handler.dispatchMessage(Handler.java:106)
E/AndroidRuntime:   at android.os.Looper.loopOnce(Looper.java:230)
E/AndroidRuntime:   at android.os.Looper.loop(Looper.java:319)
E/AndroidRuntime:   at android.app.ActivityThread.main(ActivityThread.java:8893)
E/AndroidRuntime:   at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime:   at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:608)
E/AndroidRuntime:   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1103)
E/AndroidRuntime: Caused by: com.chaquo.python.PyException: AttributeError: 'NoneType' object has no attribute 'getResources'
E/AndroidRuntime:   at <python>.tetetetretr.app.startup(app.py:17)
E/AndroidRuntime:   at <python>.toga.app._startup(app.py:636)
E/AndroidRuntime:   at <python>.toga_android.app.create(app.py:199)
E/AndroidRuntime:   at <python>.toga_android.app.main_loop(app.py:232)
E/AndroidRuntime:   at <python>.toga.app.main_loop(app.py:614)
E/AndroidRuntime:   at <python>.__main__.<module>(__main__.py:4)
E/AndroidRuntime:   at <python>.runpy._run_code(<frozen runpy>:88)
E/AndroidRuntime:   at <python>.runpy._run_module_code(<frozen runpy>:98)
E/AndroidRuntime:   at <python>.runpy.run_module(<frozen runpy>:226)
E/AndroidRuntime:   at <python>.chaquopy_java.call(chaquopy_java.pyx:354)
E/AndroidRuntime:   at <python>.chaquopy_java.Java_com_chaquo_python_PyObject_callAttrThrowsNative(chaquopy_java.pyx:326)
E/AndroidRuntime:   at com.chaquo.python.PyObject.callAttrThrowsNative(Native Method)
E/AndroidRuntime:   at com.chaquo.python.PyObject.callAttrThrows(PyObject.java:232)
E/AndroidRuntime:   at com.chaquo.python.PyObject.callAttr(PyObject.java:221)
E/AndroidRuntime:   at org.beeware.android.MainActivity.onCreate(MainActivity.java:85)
E/AndroidRuntime:   at android.app.Activity.performCreate(Activity.java:8944)
E/AndroidRuntime:   at android.app.Activity.performCreate(Activity.java:8913)
E/AndroidRuntime:   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1456)
E/AndroidRuntime:   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:4146)
E/AndroidRuntime:   ... 12 more
I/Process : Sending signal. PID: 3973 SIG: 9

[mhsmith]

It is still not working.
Linux:

This code is for Android only. Other platforms should use the locale module as normal.

Android:

What exactly is your code? The following works fine for me with Toga 0.4.4:

class Hello(toga.App):

    def startup(self):
        print(self._impl.native.getResources().getConfiguration().getLocales().get(0))
        ...

This produces the output:

I/python.stdout: en_US

Then if I change the device language to French and run the app again:

I/python.stdout: fr_FR

[tct123]

My current code is:

"""
My first application
"""

import toga
from toga.style import Pack
from toga.style.pack import COLUMN, ROW
from mylocale.TR import tr
import locale


class HelloWorld(toga.App):
    def startup(self):
        main_box = toga.Box()
        file = f"{self.paths.app.absolute()}/resources/localisation.csv"
        if toga.platform.current_platform == "android":
            lang = str(
                app._impl.native.getResources().getConfiguration().getLocales().get(0)
            )
        else:
            lang = locale.getlocale()
        textbox = toga.Label(
            text=f"{tr(csv_file=file, target_key='HELLOWORLD', langcode=lang)}, {lang}"
        )
        main_box.add(textbox)
        self.main_window = toga.MainWindow(title=self.formal_name)
        self.main_window.content = main_box
        self.main_window.show()


def main():
    return HelloWorld()

My log:

AndroidRuntime: Caused by: com.chaquo.python.PyException: NameError: name 'app' is not defined
E/AndroidRuntime:       at <python>.tetetetretr.app.startup(app.py:18)
E/AndroidRuntime:       at <python>.toga.app._startup(app.py:636)
E/AndroidRuntime:       at <python>.toga_android.app.create(app.py:199)
E/AndroidRuntime:       at <python>.toga_android.app.main_loop(app.py:232)
E/AndroidRuntime:       at <python>.toga.app.main_loop(app.py:614)
E/AndroidRuntime:       at <python>.__main__.<module>(__main__.py:4)

[mhsmith]

So change app to self, as in my previous comment.

[tct123]

Thank you, it is also working for me.