Javascript: How to Access Object Property Using Variable

Hey ladies and gents. I’ve seen plenty of Javascript online material describing how to access an object’s key-value pair. I wanted to associate many keys represented as variables to many values represented as functions. Variables helps make my program more reusable and dynamic. Just another day in the life of me. 🙂

Example:

var love=’yes’, loveMe=’yesYes’, loveMeMore=’OFCOURSE!’;

var kvObj = {love:foo, loveMe: foo3, loveMeMore:foo4};

function foo(){
console.log(‘foo’);
}

function foo3(which){
kvObj.which();
}

function foo4(which){
kvObj[which]();
}

Android Custom ROM: Bluetooth & WiFi Not Working Fix

Hey ladies and gents. I would like to aid anyone who is developing a custom Android operating system, but are encountering connectivity issues with the bluetooth and WiFi peripherals. I have flashed custom ROMs ( from Android 4.0 – 4.4) plenty of times, but 4.2 has been a hard-ass. The Nexus 4 drivers that you are supposed compile into an OTA package are not correctly functioning my with my custom OS (Identidroid). The peripherals never turn on. I figured out a hack for temporary purposes, and I would like to share it with anyone who may need it. Just another day in the life of me :).

Context
Device: Nexus 4
API: 4.2.2
Build: android-4.2.2_r1.2
Environment: Ubuntu 12.04
Recovery image: ClockworkMod

Flashing
The flashing step is pretty much straightforward. I am assuming you are familiar with the context information above. If not, SOL.

1. Download the stock factory images from Android 4.2.2, and flash the stock rom using the downloaded instructions. The stock rom may overwrite ClockworkMod. If that happens, you simply need to re-flash the recovery image.
2. Enter the command (in fastboot mode):
   fastboot flash system [path/to/custom/rom/]system.img
3. In ClockworkMod, wipe:
   1. the user data,
   2. cache
   3. Dalvik Cache
4. Reboot and PROFIT!!!

To summarize what is happening, I am basically using the stock OS images, but replacing the system.img file. It’s a simple hack, until I figure out why it seems as if my custom OS is incompatible with the Nexus 4 drivers for 4.2.2. This was a quick post, so if there are any questions or if there is something I missed, just shoot me a comment.

Android Beam: Sending Files

Ok, ladies and gents. I’ve been busting my head against the wall trying to figure out why Android Beam (AB) refuses to beam my file! I have used it to beam NDEF messages with relatively no problems, but when it came to my files, it was like hell on Earth. I kept getting the error “beam not complete.” No Shit! The problem was the file’s name had the standard naming scheme of a zip file (i.e., ends with “.zip”). I simply changed my zip file name from “file.zip” to “file.jpg”, and the file beamed! Once it was beamed over to the other device, I renamed it back .zip so that apps can properly recognize it is a zipped file. I wish I knew that sooner instead wasting half a day on this. Does this mean AB only beams recognized, simple  formats? I don’t know. Maybe I had skipped that part in the documentation. I hope this helps someone out there. Just another day in the life of me 🙂

Mac OSX VirtualBox Host: Fix USB Access on Ubuntu Guest

Ok, ladies and gents. If you are a Mac user, you will probably notice there isn’t much documentation on fixing USB access issues on Ubuntu guest operating system.  After spending hours… I mean literally a half a day traversing Mac OS, Ubuntu, and VirtualBox forums, I finally found the answer in the dead of night. Hope you found this solution faster than I did.  Another day in the life of me. 🙂

Environment:

Host OS-> MacOS 10.7.4 (OSX Lion) x86_64
VirtualBox 4.1.18 , ext: 4.1.18r78361
Guest OS-> Ubuntu 10.04 AMD 64-bit