jar files can't package to the apk

[zx013]

When I use lastest buildozer and lastest build-tools(28.0.2), it auto choose grade to pack. Then I set option android.add_jars in buildozer.spec, it seems not work well. The java class can not found in apk. So I check the code and add line in /root/.buildozer/android/platform/build/dists/zx013/templates/build.tmpl.gradle. And before run 'buildozer android release', I remove /root/.buildozer/android/platform/build/dists/zx013/build. After do this, the jar files can work well. So I think it maybe some mistake in it or I got the wrong way.

That is the build.tmpl.gradle I modify, compile fileTree(dir: 'src/main/libs', include: '.jar') is the line I have added.
dependencies {
compile fileTree(dir: 'src/main/libs', include: '.jar')
{%- for aar in aars %}
compile(name: '{{ aar }}', ext: 'aar')
{%- endfor -%}
{%- if args.depends -%}
{%- for depend in args.depends %}
compile '{{ depend }}'
{%- endfor %}
{%- endif %}
}

[piropiro2018]

I am suffering from similar problems.

Have you successfully built , android.add_jars by setting path?
Please allow me to disclose it. (The jar file name is like a stub character)

[zx013]

Just modify /root/.buildozer/android/platform/build/dists/zx013/templates/build.tmpl.gradle, android.add_jars will take effect.

[OptimusGREEN]

try this PR kivy/python-for-android#1693 to see if it fixes the issue.

[AndreMiras]

Should be fixed with the PR linked above. Otherwise feel free to re-open with info