Many of advanced users and developers have tried PPCJVM. It is really possible to create fully functioning Android applications. And because it is even possible to access methods from previously compiled .jar files including Mysql.jar and others, Pascal language have very big potential.
But it has a very remarkable hook.
Latest JDK for WIndows from Oracle do not support old versions of Apache ANT, so it is not possible to build .dex files from classes, which have been previously generated by using PPCJVM.
So The future or Pascal compilation to .dex fomrat is severely disadvantaged. Because old JDK 7 X release can produce .dex files and only specific versions of Android build tools.
So The reality is, that PPCJVM can produce reliable classes, but there is not too much projects, which can convert those .class files to dex format.
Does somebody of you know about The solution to this issue? I Am afraid, that this situation can lead to The fact, that PPCJVM will not support ANDROID target JVM for too long times. If something positive will not happen to generate while using newest JRE and JDK.

Mgr. Janusz Chmiel schrieb am Sa., 3. Aug. 2019,
11:48:

Hmm? The important part of converting the .class files to classes.dex is the dx utility which is part of the Android toolchain. Apache ANT is only a build system like Make or Gradle (which seems to be /the/ hype for Android development). My first PPCJVM Android app I even built without any build scripts completely by hand (see here:
https://wiki.freepascal.org/FPC_JVM_Android_Development#Building_an_Android_application ). The process might be a bit more involved nowadays, but in principle it will still be the same.

TL;DR: the compiler is not the problem. But maybe the build chain needs to be adjusted.

Regards,
Sven