[Android] improve fragment usage & simplify

[Sébastien Toque]

vlc-ports/android | branch: master | Sébastien Toque <xilasz at gmail.com> | Thu Sep 12 14:24:54 2013 +0200| [8207dfd7db1768d0c05c6853448ab942bfe8b9a6] | committer: Sébastien Toque

improve fragment usage & simplify

this also prevent spawning duplicated fragments.

> http://git.videolan.org/gitweb.cgi/vlc-ports/android.git/?a=commit;h=8207dfd7db1768d0c05c6853448ab942bfe8b9a6
---

 .../videolan/vlc/gui/DirectoryViewFragment.java    |    4 +-
 .../src/org/videolan/vlc/gui/HistoryFragment.java  |    2 +-
 .../src/org/videolan/vlc/gui/MainActivity.java     |   48 +++++++++++++++++---
 .../vlc/gui/audio/AudioBrowserFragment.java        |   27 ++---------
 .../videolan/vlc/gui/audio/AudioListFragment.java  |    4 +-
 .../vlc/gui/audio/AudioPlayerFragment.java         |   27 -----------
 .../videolan/vlc/gui/video/VideoGridFragment.java  |    2 +-
 .../org/videolan/vlc/widget/AudioMiniPlayer.java   |    2 +-
 8 files changed, 53 insertions(+), 63 deletions(-)

Diff:   http://git.videolan.org/gitweb.cgi/vlc-ports/android.git/?a=commitdiff;h=8207dfd7db1768d0c05c6853448ab942bfe8b9a6