Py4a Gradle error

[Padam Gupta]

I was trying to build a webview android application using py4a and after solving many errors, I am stuck at this gradle error.

First I run this - 

p4a apk --private /home/deviantpadam/andro/ --package=org.deviant.myapp --name "My Android" --version 0.1 --bootstrap=webview --requirements=flask,gensim,h5py,Jinja2,numpy --port=5000

and getting this - 

Listing '/home/deviantpadam/.local/share/python-for-android/dists/unnamed_dist_1           working:                                                        Exception in thread background thread for pid 8205:ols version to be 28.0.2

Traceback (most recent call last):> 0% INITIALIZ...(and 22 more) 

  File "/home/deviantpadam/anaconda3/envs/android/lib/python3.7/threading.py", line 926, in _bootstrap_inner

    self.run()

  File "/home/deviantpadam/anaconda3/envs/android/lib/python3.7/threading.py", line 870, in run

    self._target(*self._args, **self._kwargs)

  File "/home/deviantpadam/anaconda3/envs/android/lib/python3.7/site-packages/sh.py", line 1662, in wrap

    fn(*args, **kwargs)

  File "/home/deviantpadam/anaconda3/envs/android/lib/python3.7/site-packages/sh.py", line 2606, in background_thread

    handle_exit_code(exit_code)

  File "/home/deviantpadam/anaconda3/envs/android/lib/python3.7/site-packages/sh.py", line 2304, in fn

    return self.command.handle_command_exit_code(exit_code)

  File "/home/deviantpadam/anaconda3/envs/android/lib/python3.7/site-packages/sh.py", line 877, in handle_command_exit_code

    raise exc

sh.ErrorReturnCode_1: 

  RAN: /home/deviantpadam/.local/share/python-for-android/dists/unnamed_dist_1__armeabi-v7a/gradlew assembleDebug

  STDOUT:

> Task :compileDebugJavaWithJavac FAILED

/home/deviantpadam/.local/share/python-for-android/dists/unnamed_dist_1__armeabi-v7a/src/main/java/org/kivy/android/PythonActivity.java:245: error: cannot find symbol

    public boolean onKeyDown(int keyCode, KeyEvent event) {

                                          ^

  symbol:   class KeyEvent

  location: class PythonActivity

/home/deviantpadam/.local/share/python-for-android/dists/unnamed_dist_1__armeabi-v7a/src/main/java/org/kivy/android/PythonActivity.java:130: error: package AlertDialog does not exist

                AlertDialog.Builder dlgAlert  = new AlertDialog.Builder(PythonActivity.mActivity);

                           ^

/home/deviantpadam/.local/share/python-for-android/dists/unnamed_dist_1__armeabi-v7a/src/main/java/org/kivy/android/PythonActivity.java:130: error: package AlertDialog does not exist

                AlertDialog.Builder dlgAlert  = new AlertDialog.Builder(PythonActivity.mActivity);

                                                               ^

/home/deviantpadam/.local/share/python-for-android/dists/unnamed_dist_1__armeabi-v7a/src/main/java/org/kivy/android/PythonActivity.java:137: error: package DialogInterface does not exist

                    new DialogInterface.OnClickListener() {

                                       ^

/home/deviantpadam/.local/share/python-for-android/dists/unnamed_dist_1__armeabi-v7a/src/main/java/org/kivy/android/PythonActivity.java:247: error: cannot find symbol

        if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {

                        ^

  symbol:   variable KeyEvent

  location: class PythonActivity

Note: Some input files use or override a deprecated API.

Note: Recompile with -Xlint:deprecation for details.

5 errors

FAILURE: Build failed with an exception.

* What went wrong:

Execution failed for task ':compileDebugJavaWithJavac'.

> Compilation failed; see the compiler error output for details.

* Try:

Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.

Use '--warning-mode all' to show the individual deprecation warnings.

See https://docs.gradle.org/6.4.1/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 2s

15 actionable tasks: 15 executed

  STDERR:

[INFO]:    STDOUT (last 20 lines of 47):                                       

FAILURE: Build failed with an exception.

           working: 

* What went wrong:

Execution failed for task ':compileDebugJavaWithJavac'.

> Compilation failed; see the compiler error output for details.

* Try:

Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.

Use '--warning-mode all' to show the individual deprecation warnings.

See https://docs.gradle.org/6.4.1/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 2s

15 actionable tasks: 15 executed

[INFO]:    STDERR:

[INFO]:    COMMAND:

cd /home/deviantpadam/.local/share/python-for-android/dists/unnamed_dist_1__armeabi-v7a && /home/deviantpadam/.local/share/python-for-android/dists/unnamed_dist_1__armeabi-v7a/gradlew assembleDebug

[WARNING]: ERROR: /home/deviantpadam/.local/share/python-for-android/dists/unnamed_dist_1__armeabi-v7a/gradlew failed!

any advice or guidance would be greatly appreciated.

[Padam Gupta]

Will Downgrading gradle work? if yes, then how can I downgrade gradle?

[Padam Gupta]

Update Downgraded to gradel 4.10 still getting error.

BUILD FAILED in 1s

15 actionable tasks: 1 executed, 14 up-to-date

On Saturday, July 11, 2020 at 2:36:00 PM UTC+5:30, Padam Gupta wrote:

[Padam Gupta]

Update2- Solved all issues and build apk successfully.

But after installing the app, app is stuck at Loading... after Kivy loading screen.
Now what is this, can anyone explain?