copy DataBase File - Android Database

Android examples for Database:Database Backup

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Description

copy DataBase File

Demo Code


//package com.java2s;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import android.content.Context;

public class Main {
    private static final String DB_PATH_SUFFIX = "/databases/";
    private static final String DATABASE_NAME = "mtetno.db";
    private static Context mContext;

    private static void copyDataBase() {

        try {/*from   w  ww.  java  2 s  .c  om*/
            // Open your local db as the input stream
            InputStream myInput = mContext.getAssets().open(DATABASE_NAME);

            // Path to the just created empty db
            String outFileName = getDatabasePath();

            // if the path doesn't exist first, create it
            File f = new File(mContext.getApplicationInfo().dataDir
                    + DB_PATH_SUFFIX);
            if (!f.exists())
                f.mkdir();

            // Open the empty db as the output stream
            OutputStream myOutput = new FileOutputStream(outFileName);

            // transfer bytes from the inputfile to the outputfile
            byte[] buffer = new byte[1024];
            int length;
            while ((length = myInput.read(buffer)) > 0) {
                myOutput.write(buffer, 0, length);
            }

            // Close the streams
            myOutput.flush();
            myOutput.close();
            myInput.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static String getDatabasePath() {
        return mContext.getApplicationInfo().dataDir + DB_PATH_SUFFIX
                + DATABASE_NAME;
    }
}

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