NEXUS MEDIA IMPORTER V6.4.1 FULL APK ANDROID allows you to stream and transfer music, video, photos and documents from a USB flash drive or card reader connected to your NEXUS7 (G1 & G2), Nexus 10, Galaxy Nexus, Xoom or other Android 4.0+ devices with USB Host support. See technical notes for a list of supported file types and file systems. This is the only non-root solution for devices that do not provide native support for external storage.

v6.4.1 update: NEXUS MEDIA IMPORTER V6.4.1 FULL APK 
Photo:
HD preview for most RAW photo types
Faster fling and zoom
NEXUS MEDIA IMPORTER V6.4.1 FULL APK ANDROID
Full screen photo viewing (double tap photo)
Photos zoom to 100% detail
Large or small thumbnails
Media (Photo EXIF) Meta Data Preference
Date Color Code Preference
Multiple photo sort order options
Infinite Slide Show Loop Preference
Functional: NEXUS MEDIA IMPORTER V6.4.1 FULL
2x Read Speed (6.4)
Tap icon to select folder (Advanced Only)
OTG Troubleshooter
Total Commander Plugin
Bug / Crash fixes

v6.2.1 update:
Faster fling and zoom.
Media (Photo EXIF) Meta Data Preference.
Date Color Code Preference.
Infinite Slide Show Loop Preference.
OTG Troubleshooter.
Total Commander Plugin.
Tap icon to select folder (Advanced Only)
DNG Raw support.