Databases
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PO
 

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    <p>You need a space in the SQL in your <code>onUpgrade</code> method:</p> <pre><code>@Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { // TODO Auto-generated method stub db.execSQL("DROP TABLE IF EXISTS "+TABLE_CONTACTS); onCreate(db); } </code></pre> <p>Currently the executed SQL is: <code>DROP TABLE IF EXISTScontacts</code></p> <p>It needs to be: <code>DROP TABLE IF EXISTS contacts</code></p> <p>This also applies to a few places in your <code>onCreate</code> method:</p> <pre><code>@Override public void onCreate(SQLiteDatabase db) { // TODO Auto-generated method stub String CREATE_TABLE_CONTACTS="CREATE TABLE "+TABLE_CONTACTS+"("+KEY_ID+" INTEGER PRIMARY KEY,"+KEY_NAME+" TEXT,"+KEY_NUMBER+" TEXT"+")"; db.execSQL(CREATE_TABLE_CONTACTS); } </code></pre> <p>Something which helps me track down errors like this is to add a try/catch block and throw your own exception which includes the generated SQL, e.g.:</p> <pre><code> @Override public void onCreate(SQLiteDatabase db) { // TODO Auto-generated method stub String CREATE_TABLE_CONTACTS="CREATE TABLE "+TABLE_CONTACTS+"("+KEY_ID+" INTEGER PRIMARY KEY,"+KEY_NAME+" TEXT,"+KEY_NUMBER+" TEXT"+")"; try { db.execSQL(CREATE_TABLE_CONTACTS); } catch (SQLException sqlException) { throw new SQLException("Error executing SQL: '" + CREATE_TABLE_CONTACTS + "', message: " + sqlException.getMessage(), sqlException); } } </code></pre> <p>This allows you to see the error message as well as the SQL which caused it. If you do this it's recommended to create your own <code>execSQL</code> method which includes this code. You could even create your own wrapper around <code>SQLiteDatabase</code> and add this logic to your own overridden <code>execSQL</code>.</p>
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    1. POerror while using SQLITE on android
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    1. USIan Newson
    1. USIan Newson
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      1. VTUpMod
    1. COthanks, i have fixed the errors caused due to the spaces. but now i am getting an error "cursor index out of bounds" on this line ` Contacts contacts=new Contacts(Integer.parseInt(c.getString(0)),c.getString(1),c.getString(2));`
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      1. USShivam Bhalla
 

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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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