Databases
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Postsdbo
POcopy existing database on SD card
 

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    <p>When I am running android application it stores its database directly on the internal memory of the emulator. The application (.apk file) is stored on external storage. The size of the database is 230MB. I have the following lines in my manifest.xml:</p> <pre><code>&lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /&gt; &lt;uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /&gt; &lt;manifest android:installLocation="preferExternal" &gt; </code></pre> <p>and the following code that results in the error, INSTALL_FAILED_DEXOPT :</p> <pre><code>public void copyDatabase() throws IOException { if(!Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) { Toast.makeText(mycontext,"External Sd card not mounted", Toast.LENGTH_LONG).show(); } try { InputStream in=mycontext.getAssets().open("Demo.db"); File outFile =new File(Environment.getExternalStorageDirectory()+File.separator+ "Demo.db); outFile.createNewFile(); OutputStream out= new FileOutputStream(outFile); byte[] buf = new byte[1024]; int len; while((len = in.read(buf))&gt; 0) { out.write(buf,0,len); } out.close(); in.close(); Log.i("copyDatabase","Database Has been transferred"); } catch(IOException e) { Log.i("CopyDatabase","could not copy database"); } } public boolean checkDatabase() { SQLiteDatabase checkdb=null; try { String myPath="/sdcard/demo.db"; checkdb=SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY); Log.i("checkDatabase database path",checkdb.getPath()); } catch(SQLiteException e) { Log.e("Database doesn`t exist",e.toString()); } if(checkdb!=null) { checkdb.close(); } return checkdb != null ? true : false; } public void openDatabase() throws SQLException { String myPath="/sdcard/demo.db" myDatabase=SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READWRITE); } </code></pre>
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    1. USJohannes Pille
    1. USamy
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      1. VTModeratorReview
    1. COHave you ever tried with these answers [1. Copy .db to sdcard](http://stackoverflow.com/a/2661882/940096) and [2.Import/Export db](http://stackoverflow.com/a/6542214/940096)
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      1. USPraveenkumar
    2. COA third way, to do the upgrade, albeit not the preferred, is to open a handle to each database, and run a select * on the old table / multiple inserts for the new table (for each table). This gives you the ability, for database upgrades, to customize what tables are changed and could be coupled with the SQLiteOpenerHelper.
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      1. USBlaskovicz
    3. COStrongly related: [How to backup database file to sdcard on android?](http://stackoverflow.com/questions/1995320/how-to-backup-database-file-to-sdcard-on-android)
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      1. USTim Post
 

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