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POSQLite database with device
 

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  1. POSQLite database with device
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    <p>In my android application, I use SQLite database. It works only for emulator. When I'm installing my apk file into device, It won't show any data. But in my emulator it works very well. I can't understand about this problem. </p> <p>1) Do I copy anything to device to make it work? </p> <p>2) Is the database I created common for all? </p> <p>3) Do I backup the database for every new user?</p> <p>Someone explain please</p> <pre><code>public class SQLiteAdapterv { public static final String MYDATABASE_NAME2 = "MY_DATABASE2"; public static final String MYDATABASE_TABLE2 = "MY_VLGMAS"; public static final int MYDATABASE_VERSION = 1; public static final String KEY_ID = "_id"; public static final String KEY_CONTENT1 = "Content1"; public static final String KEY_CONTENT2 = "Content2"; public static final String KEY_CONTENT3 = "Content3"; public static final String KEY_CONTENT4 = "Content4"; public static final String KEY_VCODE = "vcode"; public static final String KEY_VNAME = "vname"; public static final String KEY_DIVSEC= "divsec"; private static final String SCRIPT_CREATE_DATABASE1 = "create table " + MYDATABASE_TABLE2 + " (" + KEY_ID + " integer primary key autoincrement, " + KEY_VCODE + " text not null, " + KEY_VNAME + " text not null," + KEY_DIVSEC + " text not null);"; private SQLiteHelper sqLiteHelper; private SQLiteDatabase sqLiteDatabase; private Context context; public SQLiteAdapterv(Context c) { context=c; } public SQLiteAdapterv openToRead() throws android.database.SQLException { sqLiteHelper = new SQLiteHelper(context, MYDATABASE_NAME2, null, MYDATABASE_VERSION); sqLiteDatabase = sqLiteHelper.getReadableDatabase(); return this; } public SQLiteAdapterv openToWrite() throws android.database.SQLException { sqLiteHelper = new SQLiteHelper(context, MYDATABASE_NAME2, null, MYDATABASE_VERSION); sqLiteDatabase = sqLiteHelper.getWritableDatabase(); return this; } public void close(){ sqLiteHelper.close(); } public long insert(String vcode, String vname,String divsec){ ContentValues contentValues = new ContentValues(); contentValues.put(KEY_VCODE, vcode); contentValues.put(KEY_VNAME, vname); contentValues.put(KEY_DIVSEC, divsec); return sqLiteDatabase.insert(MYDATABASE_TABLE2, null, contentValues); } public int deleteAll(){ return sqLiteDatabase.delete(MYDATABASE_TABLE2, null, null); } public Cursor queueAll(){ String[] columns = new String[]{KEY_ID, KEY_VCODE, KEY_VNAME,KEY_DIVSEC}; Cursor cursor = sqLiteDatabase.query(MYDATABASE_TABLE2, columns, null, null, null, null, null); return cursor; } public String getDivSec(String vname) { Cursor c=sqLiteDatabase.rawQuery("SELECT * FROM " + MYDATABASE_TABLE2 + " WHERE "+KEY_VNAME +"='"+ vname+"'",null); c.moveToFirst(); String divsec=""; if (c!=null) { divsec=c.getString(3); } c.close(); return divsec; } public String[] getAllVillage() { int i=0; Cursor c=sqLiteDatabase.rawQuery("SELECT * FROM " + MYDATABASE_TABLE2 ,null); String[] villagelist=new String[c.getCount()]; if (c.moveToFirst()) { do { villagelist[i]=c.getString(2); i++; }while(c.moveToNext()); } c.close(); return villagelist; } public String getVcode(String vname) { Cursor c=sqLiteDatabase.rawQuery("SELECT * FROM " + MYDATABASE_TABLE2 + " WHERE "+KEY_VNAME +"='"+ vname+"'",null); c.moveToFirst(); String vcode=""; if (c!=null) { vcode=c.getString(1); } c.close(); return vcode; } public class SQLiteHelper extends SQLiteOpenHelper { public SQLiteHelper(Context context, String name, CursorFactory factory, int version) { super(context, name, factory, version); // TODO Auto-generated constructor stub } @Override public void onCreate(SQLiteDatabase db) { // TODO Auto-generated method stub db.execSQL(SCRIPT_CREATE_DATABASE1); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { // TODO Auto-generated method stub } } } </code></pre>
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    1. USLingasamy Sakthivel
    1. USLingasamy Sakthivel
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    1. This table or related slice is empty.
    1. COpost some code.
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      1. POSQLite database with device
      1. USAnukool
    2. COPost some code, or more of a description other than "it won't show any data".
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      1. POSQLite database with device
      1. USJack
    3. COI use so many activities, and I did manythings with database. Which one I should post? My question is it works well on emulator. Why not on device?
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      1. POSQLite database with device
      1. USLingasamy Sakthivel
 

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