Yes i had tried that, but the ExoPlayer had made me an error (B4X 9.80 + Exoplayer 1.41 + all additional libs files 2.11.3.aar)
B4X:
Génération du fichier R. (0.30s)
Compilation du code du débogueur. (0.69s)
Compilation du code Java. (0.94s)
Conversion bytes code - dex optimisé. (1.49s)
Assemblage des fichiers. (0.68s)
Copie de resources de bibliothèque. (0.01s)
Signature fichier 'package' (debug key). (1.01s)
ZipAlign file. (0.15s)
Installation sur le dispositif. Error
adb: failed to install 1_RAPID_DEBUG.apk: Failure [INSTALL_FAILED_VERSION_DOWNGRADE]