How to perfectly start Android Development

1. Your Phone must be rooted to get privileged access to the file system.
2. Custom Recoveries like Clockworkmod (CWM), Team Win Recovery Project(TWRP) or any other modified versions of these recoveries must be installed in your phone.
3. Confirm that USB Debugging mode is enabled on your phone. USB Debugging option location in settings may differ in various android versions.
4. Ensure that the proper drivers for your phone are installed in your computer. For ADB driver Installation Check: Install ADB drivers for any android phone
5. Ensure that the correct USB cable is used to connect your phone and computer.
6. In some phones Some additional privilege is needed like boot loader should be unlocked in order to install your modified ROM.
7. This is the most important point to remember: If you are rooting and unlocking the bootloader for development, your phone’s warranty will get void and if something goes wrong during the process I’m not responsible. This is just for the education purpose. Without knowing everything do not mess with the file system.
   Understanding the file system of the Android
   Android has several partitions in its file system like System, Recovery, Data, Boot, Preloader, cache, etc. These may change according to the Specification and the processor used. During Development only the system partition will be changed in most of the cases. Only in few cases even the other partitions may also needs to be changed.
   Starting the Android Development
   Before starting anything, a Nandroid backup should be made using any of the custom recoveries mentioned above. If anything goes wrong anywhere, you can bring your phone back to work using this backup through restore option available in the custom recovery. Connect your phone to the computer using the genuine data cable. Use ADB interface or the fastboot interface to check whether your device is connected or not. You can pull the system files using the adb interface if you are an expert and start developing. Or use the tools likedsixda’s Android Kitchen and for slight modifications to your firmware use the tools like Tickle my android.
   This is just the brief guide to start android Development. A detailed instruction for everything involved in android development will be given in my future posts.
   Disclaimer
   Rooting your phone and using custom Recoveries and ROMS have risks and may result in bricking your device, and has nothing to do with Google or the device manufacturers. In case of any mishap I am not responsible if you brick/ruin your phone in any way.
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