How to install an Android Driver in the Window PC?

Step 1:

   Download the drivers from the website..

   For example: You can get asus drivers from here.

Step 2:

  Connect the device to the system.

Step 3:

   Open the device Manager.

      Win7:help

      WinXP:help

Step 4:

  Select the device(in the Other device).

Step 5:

   Select the button "Reinstall Driver".

   Then choose the driver file.  And install..

How to enable DEVELOPER OPTION in NEXUS 7 (Android 4.2.2)

Step 1:
 Open the settings.

Step 2:
  Tap the "About Tablet"/ "About Phone" in the system..

Step 3:
  Repeatedly tap on Build Number (5+ taps) until you got a message:"you are now a developer!"
  

How to copy sqlite db from Asset Folder in Android ?

 1. Put the dbfile in the asset folder.

2. Create an instance to the dbFile.

File dbfile=new File(parentfolder,dbfile); (we can choose any folder as parent folder)

3. Check whether db is existing or not. if not copy it to the folder.

        if (!dbfile.exists()) {

            try {

                copyDatabase(dbfile);

            } catch (IOException e) {

                throw new RuntimeException("Error creating source database", e);

            }

        }

    private void copyDatabase(File dbFile) throws IOException {

        InputStream is = context.getAssets().open(DB_NAME);

        OutputStream os = new FileOutputStream(dbFile);

 

        byte[] buffer = new byte[1024];

        while (is.read(buffer) > 0) {

            os.write(buffer);

        }

 

        os.flush();

        os.close();

        is.close();

    }