Hola:
Borra (o mejor, crea una nueva carpeta para la instalación) y sigue en orden las instrucciones
B4A includes all the features needed to quickly develop any type of Android app. B4A is used by tens of thousands of developers from all over the world, including companies such as NASA, HP, IBM and others.
www.b4x.com
Es decir, sigue uno a uno estos pasos
Indica que descargues uno de los dos SDK, es decir o OpenJDK 11 u Oracle JDK 8, y después al paso 2 (Si ya tienes la carpeta Android de la instalación anterior, crea por ejemplo AndroidNew, pero recuerda luego en el path de la versión 11.5 poner esta carpeta y no la de Android).
Installation
Video tutorial:
1.Oracle Java 8 or OpenJDK 11(recommended)
- Download one of the following JDKs. Note that OpenJDK 11 requires Windows 64 bit.
- OpenJDK 11 + OpenJFX 11: download link.
License: GPL + classpath exception. License permits usage in closed commercial projects.
(package components: OpenJDK and OpenJFX)
Download the zip and unpack it. C:\java is a good place for it.
It is recommended to use a tool such as 7-Zip to unzip the large package. Windows Explorer might fail to extract it properly. Installation is not required.
- Oracle JDK 8: download link (requires creating an account).
Check the Accept License Agreement button.
Select "Windows x86" or "Windows x64" (for 64 bit machines) in the platforms list.
Download the file and install it.
2. Android SDK + Required Resources
- You need to download two components, both of them do not require installation.
- Download Android SDK Command line tools
Make sure to read and agree to the SDK license. Click on the Windows command line tools to see the license.
Android Studio is not needed and will not be affected by the command line tools (which are always required).
- Unzip it in a folder such as C:\Android
- Download the required resources.
- Unzip in the same folder. It should look like this:
- Note that you don't need to run B4A Sdk Manager, unless you want to use the Android emulator, which is less recommended.
- These are two large zip files. It is recommended to use a tool such as 7-Zip to unzip them. We see many cases where Windows built-in zip tool fails to extract the files properly.
En cuanto a los otros errores, prueba con la aplicación de Erel, si funciona, entonces ya sabes que puede haber algún error o habría que cambiar algo en el código PHP.
Para el error de multidex, prueba a poner
Intenta pegar los errores como texto, puedes ponerlo como "SPOILER" para que no ocupe tanto en el hilo, pero hace más cómodo copiarlo por si hay que hacer alguna búsqueda o algo.
saludos,