Is it posible get from contacts Display_name + phone number + email with one query?

Question

是否可以通过一个查询获取包含Display_name ， Phone Number和Email所有联系人列表？

Answer 1

Query on the appropriate content provider Uri. For example, android.provider.ContactsContract.CommonDataKinds.Email lets you obtain email addresses, and your other columns (eg, IN_VISIBLE_GROUP) are implicitly joined in.

ContentResolver resolver = getContentResolver();
Cursor c = resolver.query(
        Data.CONTENT_URI, 
        null, 
        Data.HAS_PHONE_NUMBER + "!=0 AND (" + Data.MIMETYPE + "=? OR " + Data.MIMETYPE + "=?)", 
        new String[]{Email.CONTENT_ITEM_TYPE, Phone.CONTENT_ITEM_TYPE},
        Data.CONTACT_ID);

while (c.moveToNext()) {
    long id = c.getLong(c.getColumnIndex(Data.CONTACT_ID));
    String name = c.getString(c.getColumnIndex(Data.DISPLAY_NAME));
    String data1 = c.getString(c.getColumnIndex(Data.DATA1));

    System.out.println(id + ", name=" + name + ", data1=" + data1);
}