On Android, Toga probably has problems if you rotate the screen. We're probably assuming the activitySingleton never changes. Or... maybe we don't? Anyway, worth figuring this out.
See Ch. 5 (Looper/Handler) of Android Concurrency by G. Blake Meike.
Sometimes one needs to uninstall the app, then reinstall it, for it to really update. I think this has to do with us being careless about app keys, and not really detecting the error condition.
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| ➜ helloworld git:(master) /Users/asheesh/.briefcase/tools/android_sdk/platform-tools/adb logcat -s 'org.beeware.android.MainActivity.appLaunch' | |
| --------- beginning of system | |
| --------- beginning of crash | |
| --------- beginning of main | |
| 06-04 22:21:58.201 8177 8177 D org.beeware.android.MainActivity.appLaunch: onCreate() start | |
| 06-04 22:21:58.413 8177 8177 D org.beeware.android.MainActivity.appLaunch: startPython() start | |
| 06-04 22:21:58.413 8177 8177 D org.beeware.android.MainActivity.appLaunch: unpackPython() start | |
| 06-04 22:21:58.413 8177 8177 D org.beeware.android.MainActivity.appLaunch: Unpacking Python with ABI x86 to /data/user/0/org.ash_eesh.helloworld/files/python/stdlib | |
| 06-04 22:22:00.652 8177 8177 D org.beeware.android.MainActivity.appLaunch: Unpacking rubicon-java to /data/user/0/org.ash_eesh.helloworld/files/python/rubicon-java | |
| 06-04 22:22:00.666 8177 8177 D org.beeware.android.MainActivity.appLaunch: Unpacking Python assets to base dir /data/user/0/org.ash_eesh.helloworld/files/python/user_co |
| openssl enc -aes-256-ctr -pass pass:"$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64)" -nosalt < /dev/zero | pv -pterb -s $(blockdev --getsize64 /dev/sdb) | sudo dd bs=4M of=/dev/sdb | |
| Thanks to https://serverfault.com/questions/6440/is-there-an-alternative-to-dev-urandom/415962 | |
| Note per https://tches.iacr.org/index.php/TCHES/article/view/8392 it may not be as secure as one might dream, but I'm OK with this given my use. | |
| This lets me write to the disk at 128MiB/s, which is better than the ~20MiB/s I was getting when doing the naive | |
| cat /dev/urandom | pv | sudo dd of=/dev/sdb |
| https://github.com/labbots/google-drive-upload | |
| + patch out some `-f` checks to be `-e` (since `-f` is false on a block device) | |
| + replace `wc -c` with `blockdev --getsize64 $filename` to avoid spending 6 hours on `wc -c` before even uploading | |
| + `cp -a` the block device to /tmp/ with a nice filename, so google-drive-upload uses that as the GDrive filename | |
| Wait 6 hours or so. | |
| Then figure out the MD5 thing to validate the upload. |
| 05-16 15:52:01.587 10790 10817 D stdio : Rubicon namespace package not registered! | |
| 05-16 15:52:02.994 10790 10817 D stdio : Python app launched & stored in Android Activity class | |
| 05-16 15:52:02.996 10790 10817 D stdio : | |
| 05-16 15:52:03.097 10790 10817 D stdio : Seems to have a loop for None | |
| 05-16 15:52:03.097 10790 10817 D stdio : letting it continue anyway | |
| 05-16 15:52:03.100 10790 10817 D stdio : Would have caught loop in set_value(), but continuing anyway | |
| 05-16 15:52:03.103 10790 10817 D stdio : Seems to have a loop for None | |
| 05-16 15:52:03.103 10790 10817 D stdio : letting it continue anyway | |
| 05-16 15:52:03.103 10790 10817 D stdio : Would have caught loop in set_value(), but continuing anyway | |
| 05-16 15:52:03.105 10790 10817 D stdio : Seems to have a loop for None |
| // SNIPPET | |
| // Create a Spinner | |
| val spinner = Spinner(this, Spinner.MODE_DROPDOWN) | |
| val adapter = ArrayAdapter(this, android.R.layout.simple_spinner_item, | |
| arrayOf("Option 1", "Option 2", "Option 3")) | |
| adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item) | |
| spinner.adapter = adapter | |
| spinner.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED) | |
| val spinnerParams = RelativeLayout.LayoutParams(spinner.measuredWidth, spinner.measuredHeight) | |
| dynamicLayout.addView(spinner, spinnerParams) |
| package org.asheesh.fourbuttonsattwohundredpixels | |
| import android.database.DataSetObserver | |
| import android.util.Log | |
| import android.view.View | |
| import android.view.ViewGroup | |
| import android.widget.SpinnerAdapter | |
| import android.widget.TextView | |
| class CustomSpinnerAdapter: SpinnerAdapter { |
| Minor layout bug |
| """ | |
| My first application | |
| """ | |
| import toga | |
| from toga.constants import RIGHT | |
| from toga.style import Pack | |
| from toga.style.pack import COLUMN, ROW | |