Android 2.0以上读取手机联系人

       // 得到ContentResolver对象
        ContentResolver cr = getContentResolver();
       // 取得电话本中开始一项的光标
        Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null,
                null, null, null);
       while (cursor.moveToNext()) {
            // 取得联系人名字
            int nameFieldColumnIndex = cursor
                    .getColumnIndex(PhoneLookup.DISPLAY_NAME);
            String name = cursor.getString(nameFieldColumnIndex);
            Log.v("tag", name);
            // 取得联系人ID
            String contactId = cursor.getString(cursor
                    .getColumnIndex(ContactsContract.Contacts._ID));
            Cursor phone = cr.query(
                    ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
                    ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = "
                            + contactId, null, null);

            // 取得电话号码(可能存在多个号码)
            while (phone.moveToNext()) {
                String strPhoneNumber = phone
                        .getString(phone
                                .getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                Log.v("tag", strPhoneNumber);
            }
            phone.close();
        }
        cursor.close();