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POSQLite database working on my emulator and doesn't work with my device
 

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  1. POSQLite database working on my emulator and doesn't work with my device
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    <p>I'm working on an android application where I import my sqlite database into the android project .. the database works fine on the emulator but when i try the app on my device it doesn't work and outputs a message : Unfortunately, appname has stopped.</p> <p>I put my database in the assets folder in my project then use this code to copy it :</p> <pre><code>try { String destPath = "/data/data/" + getPackageName() + "/databases/MyDB"; File f = new File(destPath); if (!f.exists()) { CopyDB( getBaseContext().getAssets().open("mydb"), new FileOutputStream(destPath)); } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } </code></pre> <p>copyDB function : </p> <pre><code>public void CopyDB(InputStream inputStream, OutputStream outputStream) throws IOException { //---copy 1K bytes at a time--- byte[] buffer = new byte[1024]; int length; while ((length = inputStream.read(buffer)) &gt; 0) { outputStream.write(buffer, 0, length); } inputStream.close(); outputStream.close(); } </code></pre> <p>DBAdapter Class : </p> <pre><code>public class DBAdapter { public static final String KEY_ROWID = "_id"; public static final String KEY_NAME = "username"; public static final String KEY_PASSWORD = "password"; private static final String DATABASE_NAME = "MyDB"; private static final String DATABASE_TABLE = "users"; private static final int DATABASE_VERSION = 4; private final Context context; private DatabaseHelper DBHelper; private SQLiteDatabase db; public DBAdapter(Context ctx) { this.context = ctx; DBHelper = new DatabaseHelper(context); } private static class DatabaseHelper extends SQLiteOpenHelper { DatabaseHelper(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); } @Override public void onCreate(SQLiteDatabase db) { } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { } } //---opens the database--- public DBAdapter open() throws SQLException { db = DBHelper.getWritableDatabase(); return this; } //---closes the database--- public void close() { DBHelper.close(); } //---retrieves all the users--- public Cursor getAllusers() { return db.query(DATABASE_TABLE, new String[] {KEY_ROWID, KEY_NAME, KEY_PASSWORD}, null, null, null, null, null); } //---retrieves a particular user--- public User getuser(String username) throws SQLException { Cursor mCursor = db.query(true, DATABASE_TABLE, new String[] {KEY_ROWID, KEY_NAME, KEY_PASSWORD}, KEY_NAME + "=" + "'"+username+ "'", null, null, null, null, null); if(mCursor.moveToFirst()) { mCursor.moveToFirst(); User u=new User(Integer.valueOf(mCursor.getString(0)),mCursor.getString(1),mCursor.getString(2)); return u; }else return null; } </code></pre> <p>}</p> <p>Thank you so much in advance </p>
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    1. USMustafa Abdel-Khalik
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      1. POSQLite database working on my emulator and doesn't work with my device
      1. This table or related slice is empty.
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    1. COPost the logcat showing the error.
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      1. POSQLite database working on my emulator and doesn't work with my device
      1. USBarak
    2. COhow to check logcat while running the app on the device ?
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      1. POSQLite database working on my emulator and doesn't work with my device
      1. USMustafa Abdel-Khalik
    3. COI tried running the app on emulator with newer version of android ( android 4 ) just like my mobile .. it is now not working on the new emulator !
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      1. POSQLite database working on my emulator and doesn't work with my device
      1. USMustafa Abdel-Khalik
 

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