Changed SRCDIR
Removed viewer

viewer needs swing and awt, unavailable on Android
Changed the Collator's decomposition in Transport class

Using Collator.FULL_DECOMPOSITION couses throwing IllegalArgumentException:

    Process: info.rynkowski.dbusandroid, PID: 3306
    java.lang.ExceptionInInitializerError
            at org.freedesktop.dbus.Transport.connect(Transport.java:799)
            at org.freedesktop.dbus.Transport.<init>(Transport.java:737)
            at org.freedesktop.dbus.DBusConnection.<init>(DBusConnection.java:299)
            at org.freedesktop.dbus.DBusConnection.getConnection(DBusConnection.java:217)
            at info.rynkowski.dbusandroid.MainActivity$1$1.run(MainActivity.java:38)
            at java.lang.Thread.run(Thread.java:841)
     Caused by: java.lang.IllegalArgumentException: Bad mode: 2
            at java.text.Collator.decompositionMode_Java_ICU(Collator.java:342)
            at java.text.Collator.setDecomposition(Collator.java:319)
            at org.freedesktop.dbus.Transport$SASL.<clinit>(Transport.java:109)
            at org.freedesktop.dbus.Transport.connect(Transport.java:799)
            at org.freedesktop.dbus.Transport.<init>(Transport.java:737)
            at org.freedesktop.dbus.DBusConnection.<init>(DBusConnection.java:299)
            at org.freedesktop.dbus.DBusConnection.getConnection(DBusConnection.java:217)
            at info.rynkowski.dbusandroid.MainActivity$1$1.run(MainActivity.java:38)
            at java.lang.Thread.run(Thread.java:841)

Changed from Collator.FULL_DECOMPOSITION to Collator.CANONICAL_DECOMPOSITION, because FULL_DECOMPOSITION for decomposition is not supported.
Ref. https://developer.android.com/reference/java/text/Collator.html#FULL_DECOMPOSITION
Fix the throwing MissingResourceException after getting the dbusjava_localized resource

    java.lang.ExceptionInInitializerError
            at org.freedesktop.dbus.DBusConnection.disconnect(DBusConnection.java:758)
            at org.freedesktop.dbus.DBusConnection.<init>(DBusConnection.java:303)
            at org.freedesktop.dbus.DBusConnection.getConnection(DBusConnection.java:217)
            at info.rynkowski.dbusandroid.MainActivity$1$1.run(MainActivity.java:38)
            at java.lang.Thread.run(Thread.java:841)
     Caused by: java.util.MissingResourceException: Can't find resource for bundle 'dbusjava_localized_pl_PL', key ''
            at java.util.ResourceBundle.missingResourceException(ResourceBundle.java:238)
            at java.util.ResourceBundle.getBundle(ResourceBundle.java:230)
            at java.util.ResourceBundle.getBundle(ResourceBundle.java:139)
            at org.freedesktop.dbus.Gettext.<clinit>(Gettext.java:25)
            at org.freedesktop.dbus.DBusConnection.disconnect(DBusConnection.java:758)
            at org.freedesktop.dbus.DBusConnection.<init>(DBusConnection.java:303)
            at org.freedesktop.dbus.DBusConnection.getConnection(DBusConnection.java:217)
            at info.rynkowski.dbusandroid.MainActivity$1$1.run(MainActivity.java:38)
            at java.lang.Thread.run(Thread.java:841)

I reccomend to look at it in future. Maybe there is possiblity to do it in other way.