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POupdating or inserting in a table with keeping the row numbers to one
 

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  1. POupdating or inserting in a table with keeping the row numbers to one
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    <p>I am trying to see if there is something in my table update it and if not insert one row. So basically I will have one row always in my table. </p> <pre><code> public void createOrupdate(long id,String x, String y, String angle){ String[] columns= new String[]{KEY_ROWID, KEY_X, KEY_Y, KEY_ANGLE}; Cursor c= ourDatabase.query(DATABASE_TABLE, columns, null, null, null, null, null); ContentValues editCon = new ContentValues(); if (c!=null){ editCon.put(KEY_X, x); editCon.put(KEY_Y, y); editCon.put(KEY_ANGLE, angle); ourDatabase.update(DATABASE_TABLE, editCon, KEY_ROWID + "=?", new String[]{String.valueOf(id)}); } else{ editCon.put(KEY_X, x); editCon.put(KEY_Y, y); editCon.put(KEY_ANGLE, angle); ourDatabase.insert(DATABASE_TABLE, null, editCon); } } public String getData() { // TODO Auto-generated method stub String[] columns= new String[]{KEY_ROWID, KEY_X, KEY_Y, KEY_ANGLE}; Cursor c= ourDatabase.query(DATABASE_TABLE, columns, null, null, null, null, null); String result= ""; int iRow= c.getColumnIndex(KEY_ROWID); int iX= c.getColumnIndex(KEY_X); int iY= c.getColumnIndex(KEY_Y); int iAngle= c.getColumnIndex(KEY_ANGLE); int i= 0; for( c.moveToFirst(); !c.isAfterLast(); c.moveToNext()){ result= result+ c.getString(iRow)+ " "+ c.getString(iX)+ " " +c.getString(iY)+ " "+ c.getString(iAngle)+"\n"; } return result; } </code></pre> <p>But when I use <code>entry.createOrupdate(1, Double.toString(db1), Double.toString(db2), Double.toString(db3));</code> in my code there is nothing in my table and no exception and nothing. when i use update or insert separately it works.. what is the problem?</p>
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