Monthly Archives: February 2014

how to get nexus 7 2013 otg working with usb mass storage

nexus 7 2013 has out-of-box support for otg wired mouse and keyboard, if you root it and install stickmount, you can mount usb thumb drive, but not your hard drive, the reason is pretty simple, your hard drive need a 5V voltage drive to work, but that otg cable from your tablet can’t provide that. some people suggested hack open a otg cable and wire a extra usb head just for 5V power, connect that usb head to your computer ‘s usb port(which has standard 5V power), and it works. i don’t have tools for that but found my own way:

just buy a 3 headed usb cable that use 1 of the heads to draw power if needed

the good thing about this is 3 headed usb cable is a standard product, you can buy it easily, you don’t have to hack open a existing cable to make your own gear.

i thought this was a obvious solution, not sure if anyone has find it before me, but i can confirm it did works, for my nexus 7 2013.

android 4.4 kitkat wallpaper location

so i need to find wallpaper location for my new nexus 7 2013(4.4 upgraded). not just the current wallpaper, i want to find all of them.

after a bit of messing around with my tablet, i found the hideout of those wallpapers is still in launcher2.apk, i don’t know when google has moved it, but now launcher2.apk is inside /system/priv-app/, not in /system/app/, after catching launcher2.apk, the remaining task is easy: just extract it and look into res/, interestingly those wallpapers is inside a folder called drawable-sw600dp-nodpi, i would expect something like drawable-hdpi(hight dpi), or drawable-xhdpi(extra high dpi), but not -nodpi(no dpi??)

so there you go, if you want to find stock wallpapers for nexus 7 2013(kitkat upgraded), look for /system/priv-app/Launcher2.apk, extract it, then go to res/drawable-sw600dp-nodpi/, all yours.