Webview apps not working on Android

Just tried the flask testapp with python2 and python3. Python 2 fails loading libpython2.7.so in werkzeug, while Python 3 fails at Py_Initialize in start.c.

Python 2:

01-31 20:27:37.704 20925 20967 I python  : [GCC 4.2.1 Compatible Android (4691093 based on r316199) Clang 6.0.2 (https://a
01-31 20:27:37.704 20925 20967 I python  : ('python path is', ['/data/data/org.test.testapp_flask2/files/app', '/data/user/0/org.test.testapp_flask2/files/app/_python_bundle/stdlib.zip', '/data/user/0/org.test.testapp_flask2/files/app/_python_bundle/modules', '/data/user/0/org.test.testapp_flask2/files/app/_python_bundle/site-packages'])
01-31 20:27:37.704 20925 20967 I python  : imported os
01-31 20:27:37.710 20925 20967 I python  : Traceback (most recent call last):
01-31 20:27:37.710 20925 20967 I python  :   File "/home/sandy/devel/python-for-android/testapps/build/bdist.android-armeabi-v7a/testapp_flask/main.py", line 11, in <module>
01-31 20:27:37.710 20925 20967 I python  :   File "/home/sandy/.local/share/python-for-android/build/python-installs/testapp_flask/flask/__init__.py", line 17, in <module>
01-31 20:27:37.710 20925 20967 I python  :   File "/home/sandy/.local/share/python-for-android/build/python-installs/testapp_flask/werkzeug/__init__.py", line 20, in <module>
01-31 20:27:37.710 20925 20967 I python  :   File "/home/sandy/.local/share/python-for-android/build/python-installs/testapp_flask/werkzeug/_compat.py", line 5, in <module>
01-31 20:27:37.710 20925 20967 I python  : ImportError: dlopen failed: library "libpython2.7.so" not found
01-31 20:27:37.711 20925 20967 I python  : Python for android ended.

Python 3:

01-31 20:28:13.240 21005 21047 I python  : Initializing Python for Android
01-31 20:28:13.240 21005 21047 I python  : Setting additional env vars from p4a_env_vars.txt
01-31 20:28:13.240 21005 21047 I python  : Changing directory to the one provided by ANDROID_ARGUMENT
01-31 20:28:13.240 21005 21047 I python  : /data/user/0/org.test.testapp_flask/files/app
01-31 20:28:13.241 21005 21047 I python  : Preparing to initialize python
01-31 20:28:13.241 21005 21047 I python  : _python_bundle dir exists
01-31 20:28:13.241 21005 21047 I python  : calculated paths to be...
01-31 20:28:13.241 21005 21047 I python  : /data/user/0/org.test.testapp_flask/files/app/_python_bundle/stdlib.zip:/data/user/0/org.test.testapp_flask/files/app/_python_bundle/modules
01-31 20:28:13.241 21005 21047 I python  : set wchar paths...
01-31 20:28:13.241   430  1306 D BandwidthController: [LG DATA] No such appUid: 10392
01-31 20:28:13.241   430  1306 D DnsProxyListener: App 10392 tries DNS query. Accept family:0 protocol:0
01-31 20:28:13.242 21005 21043 W AudioCapabilities: Unsupported mime audio/x-lg-flac
01-31 20:28:13.243 21005 21043 W AudioCapabilities: Unsupported mime audio/adpcm
...
...
...
01-31 20:28:13.402 21005 21047 F libc    : Fatal signal 6 (SIGABRT), code -6 in tid 21047 (PythonThread)
01-31 20:28:13.402   458   560 E ThermalEngine: ACTION: CLUSTER - Setting CLUSTER[1] to 1632000
01-31 20:28:13.404   458   560 E ThermalEngine: ACTION: CLUSTER - Setting CLUSTER[1] to 1689600
01-31 20:28:13.412 21005 21043 I VideoCapabilities: Unsupported profile 4 for video/mp4v-es
01-31 20:28:13.420  1319  1467 I ActivityManager: Displayed org.test.testapp_flask/org.kivy.android.PythonActivity: +479ms
01-31 20:28:13.421  1319  1467 V WindowManager: Looking for focus: 25 = Window{29f1034 u0 StatusBar}, flags=-2122055608, canReceive=false
01-31 20:28:13.421  1319  1467 V WindowManager: findFocusedWindow: Found new focus @ 17 = Window{989de75 u0 org.test.testapp_flask/org.kivy.android.PythonActivity}
01-31 20:28:13.423  1319  1467 D InputDispatcher: Window went away: Window{7e46238 u0 Starting org.test.testapp_flask}
01-31 20:28:13.434 21005 21057 W cr_CrashFileManager: /data/user/0/org.test.testapp_flask/cache/WebView/Crash Reports does not exist or is not a directory
01-31 20:28:13.435   458   560 E ThermalEngine: ACTION: CLUSTER - Setting CLUSTER[1] to 1632000
01-31 20:28:13.453   431   431 F DEBUG   : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
01-31 20:28:13.453   431   431 F DEBUG   : Build fingerprint: 'lge/p1_global_com/p1:6.0/MRA58K/1809319266c01:user/release-keys'
01-31 20:28:13.453   431   431 F DEBUG   : Revision: '11'
01-31 20:28:13.453   431   431 F DEBUG   : ABI: 'arm'
01-31 20:28:13.453   431   431 F DEBUG   : pid: 21005, tid: 21047, name: PythonThread  >>> org.test.testapp_flask <<<
01-31 20:28:13.454   431   431 F DEBUG   : signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
01-31 20:28:13.465   458   560 E ThermalEngine: ACTION: CLUSTER - Setting CLUSTER[1] to 1536000
01-31 20:28:13.470   431   431 F DEBUG   :     r0 00000000  r1 00005237  r2 00000006  r3 d907f978
01-31 20:28:13.470   431   431 F DEBUG   :     r4 d907f980  r5 d907f930  r6 00000000  r7 0000010c
01-31 20:28:13.470   431   431 F DEBUG   :     r8 00000002  r9 f3cbdf0a  sl d907f148  fp d907ee78
01-31 20:28:13.470   431   431 F DEBUG   :     ip 00000006  sp d907ee00  lr f74160ad  pc f7418190  cpsr 400f0010
01-31 20:28:13.472   431   431 F DEBUG   : 
01-31 20:28:13.472   431   431 F DEBUG   : backtrace:
01-31 20:28:13.472   431   431 F DEBUG   :     #00 pc 00042190  /system/lib/libc.so (tgkill+12)
01-31 20:28:13.472   431   431 F DEBUG   :     #01 pc 000400a9  /system/lib/libc.so (pthread_kill+32)
01-31 20:28:13.473   431   431 F DEBUG   :     #02 pc 0001c88f  /system/lib/libc.so (raise+10)
01-31 20:28:13.473   431   431 F DEBUG   :     #03 pc 00019a41  /system/lib/libc.so (__libc_android_abort+34)
01-31 20:28:13.473   431   431 F DEBUG   :     #04 pc 000175fc  /system/lib/libc.so (abort+4)
01-31 20:28:13.473   431   431 F DEBUG   :     #05 pc 001783e0  /data/app/org.test.testapp_flask-1/lib/arm/libpython3.7m.so

@opacam Are these expected to be working? For Python 2 it seems it may not know where to load libpython2.7.so from, which would be okay, but why is Python 3 failing at Py_Initialize even though everything seems to be set up properly?

[inclement]

Thanks @opacam, I’ll investigate my environment more before worrying too much about it.

[misl6]

Closing as now the flask test app works fine onpython3 (python2 has been removed)