How to copy database from assets folder in android using kotlin

We can copy database from assets folde by

class CopyAssetDatabaseOpenHelper(private val context: Context) {

companion object {

    private val DB_NAME = "dbName.db"
}

fun openDatabase(): SQLiteDatabase {
    val dbFile = context.getDatabasePath(DB_NAME)


    if (!dbFile.exists()) {
        try {
           val checkDB = context.openOrCreateDatabase(DB_NAME, Context.MODE_PRIVATE,null)

            checkDB?.close()
            copyDatabase(dbFile)
        } catch (e: IOException) {
            throw RuntimeException("Error creating source database", e)
        }

    }
    return SQLiteDatabase.openDatabase(dbFile.path, null, SQLiteDatabase.OPEN_READWRITE)
}


private fun copyDatabase(context:Context) {
            val dbFile = context.getDatabasePath("logicaldb")
            val assetdb = context.assets.open("logicaldb")
            val currentDB = FileOutputStream(dbFile)

            val buffer = ByteArray(1024)
            while (assetdb.read(buffer) > 0) {
                currentDB.write(buffer)
                Log.d("#DB", "Copying "+buffer.toString())
            }

            currentDB.flush()
            currentDB.close()
            assetdb.close()

        }
    }

 

What is Intent? What is the difference between an implicit intent and an explicit intent?

What is Android?

Fix Duplicate Files in APK Build.gradle Issue - RRutors

Fix Error: Use JsonReader.setLenient(true) for Malformed JSON

How do i load image from drawable folder in Jetpack Compose?

Extract Date and Time from Long Type Variable - RRutors

What is Application?

Hide/Disable soft keyboard on Activity launch: Android

How to reduce APK package size?

Fix Behavior Subclass BottomSheetBehavior Exception - RRutors

How to get screen size (width,height) in Android?

Permission denied for window type 2010 in Marshmallow device

How to save activity State in Android?

How to get an image resource by it's name in android?

Symmetric vs Asymmetric Encryption in Android Server - RRutors

How to install/ uninstall apk by command line ADB

Invoke-customs are only supported starting with android 0 --min-api 26

Open PDF in Google Drive with Intent in Android - RRutors

How do I check in SQLite whether a table exists?

FragmentPagerAdapter deprecated, Since API 27.1.0 FragmentPagerAdapter is deprecated.

Key Points to remember while develop the Android Application.  

Explain Fragment Life Cycle

How To Set Text Color Programmatically Android TextView?

How can i comment inside xml file in android studio?

How to start a new activity on button click

INSTALL_FAILED_INVALID_APK: Split lib_slice_9_apk was defined multiple times. It is possible that th

What are Android Versions available?

How to Use Deprecated Handler() in Android - RRutors Guide

Check List for Generate Signed APK Android

How to Exit android app on back pressed?

Decompile APK Files: How to Get Source Code - RRutors Guide

What is NetworkOnMainThread Exception?

How to convert DP to Pixel and Pixel to Dp?

Set Activity to Fullscreen Mode in Android - RRutors

What is ANR? How to avoid and resolve it?

ERR_ACCESS_DENIED in Android Webview with sdk 30

How do I generate random numbers in Dart?

How to validate email address in Android with Kotlin?

What is the Different Between val and var in Kotlin?

How to avoid multiple button click at same time in android?

Projects By category