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BackUp & Restore in android




How to get the BackUp data into the SD Card & Restore it again into the app?

// Method to get Backup from an app Databaseprivate void exportDB() {
       try {
           File sd = Environment.getExternalStorageDirectory();
           File data = Environment.getDataDirectory();
           if (sd.canWrite()) {
               String currentDBPath = "//data//" + "App Package Name" + "//databases//" + DATABASES[0];
               String backupDBPath = DATABASES[0];
               File currentDB = new File(data, currentDBPath);
               File backupDB = new File(sd, backupDBPath);
               FileChannel src = new FileInputStream(currentDB).getChannel();
               FileChannel dst = new FileOutputStream(backupDB).getChannel();
               dst.transferFrom(src, 0, src.size());
               src.close();
               dst.close();
      
           Toast.makeText(getBaseContext(), backupDB.toString(), Toast.LENGTH_LONG).show();
           }
       } catch (Exception e) {
           Toast.makeText(getBaseContext(), e.toString(), Toast.LENGTH_LONG).show();
       }
   }

// Method to restore data into an app

marysudha[6:45 PM]private void importDB() {
       try {
           File sd = Environment.getExternalStorageDirectory();
           File data = Environment.getDataDirectory();
           if (sd.canWrite()) {
               String backupDBPath = "//data//" + "com.android.e_commerceapp" + "//databases//" + DATABASES[0];
               String currentDBPath = DATABASES[0];
               File currentDB = new File(sd, currentDBPath);
               File backupDB = new File(data, backupDBPath);
               FileChannel src = new FileInputStream(currentDB).getChannel();
               FileChannel dst = new FileOutputStream(backupDB).getChannel();
               dst.transferFrom(src, 0, src.size());
               src.close();
               dst.close();
              Toast.makeText(getBaseContext(), backupDB.toString(), Toast.LENGTH_LONG).show();
           }
       } catch (Exception e) {
           Toast.makeText(getBaseContext(), e.toString(), Toast.LENGTH_LONG).show();
       }
   }
//Database Name//Here we can use multiple database(.db)
private static final String[] DATABASES = {
           "onlineshopping.db",                       // DATABASE[0]-- It is 0th array element.
   };

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