android - 使用电子邮件地址获取联系人姓名

Question

这是我的代码：

Cursor phones = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null,null, null);
    while (phones.moveToNext()) {
      String name=phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
      name1.add(name);
    }
    phones.close();

我想做的是只显示那些带有电子邮件地址的联系人姓名，如果他们没有，则根本不应该显示。我想知道我该怎么做。

Answer 1

试试下面的代码

private static final String[] PROJECTION = new String[] {
    ContactsContract.CommonDataKinds.Email.CONTACT_ID,
    ContactsContract.Contacts.DISPLAY_NAME,
    ContactsContract.CommonDataKinds.Email.DATA
};

...

ContentResolver cr = getContentResolver();
Cursor cursor = cr.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, PROJECTION, null, null, null);
if (cursor != null) {
    try {
        final int contactIdIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Email.CONTACT_ID);
        final int displayNameIndex = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
        final int emailIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA);
        long contactId;
        String displayName, address;
        while (cursor.moveToNext()) {
            contactId = cursor.getLong(contactIdIndex);
            displayName = cursor.getString(displayNameIndex);
            address = cursor.getString(emailIndex);
            ...
        }
    } finally {
        cursor.close();
    }
}