Getting contact email by name

I've been trying to get email for contact by its name, but stuck with some difficultes. here is how I am trying to do this:

    Cursor emailCur = cr.query(
            ContactsContract.CommonDataKinds.Email.CONTENT_URI, null,
            ContactsContract.CommonDataKinds.Email.DISPLAY_NAME + " = ?",
            new String[] { contactName }, null);
    while (emailCur.moveToNext()) {
        String email = emailCur
                .getString(emailCur
                        .getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
        String emailType = emailCur
                .getString(emailCur
                        .getColumnIndex(ContactsContract.CommonDataKinds.Email.TYPE));
                }
    emailCur.close();

I constantly get an exception, what am I doing wrong?

Now I am getting zero iteration of my cursor loop.

Solution

Querying email addresses is similar to phone numbers. A query must be performed to get email addresses from the database. Query the URI stored in ContactsContract.CommonDataKinds.Email.CONTENT_URI to query the email address table.

 Cursor emailCur = cr.query( 
    ContactsContract.CommonDataKinds.Email.CONTENT_URI, 
    null,
    ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = ?", 
    new String[]{id}, null); 
while (emailCur.moveToNext()) { 
    // This would allow you get several email addresses
        // if the email addresses were stored in an array
    String email = emailCur.getString(
                  emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
    String emailType = emailCur.getString(
                  emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.TYPE)); 
} 
emailCur.close();

As with the phone query the field names for the email table are also stored under ContactsContract.CommonDataKinds. The email query is performed on the URI in ContactsContract.CommonDataKinds.Email.CONTENT_URI and the WHERE clause has to match the ContactsContract.CommonDataKinds.Email.CONTACT_ID field. Since multiple email addresses can be stored loop through the records returned in the Cursor.