[Android] Refactor ML init mgmt in playback service

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Tue Oct  3 14:47:27 2017 +0200| [4d89f090e7c191b20c49a185b75c4f3236ddf698] | committer: Geoffrey Métais

Refactor ML init mgmt in playback service

> https://code.videolan.org/videolan/vlc-android/commit/4d89f090e7c191b20c49a185b75c4f3236ddf698
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 .../src/org/videolan/vlc/PlaybackService.java      | 115 +++++++++++++--------
 1 file changed, 71 insertions(+), 44 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/4d89f090e7c191b20c49a185b75c4f3236ddf698