Intent i = new Intent(Intent.ACTION_PICK, android.provider.ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(i, 1);

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK) {
            Uri contactData = data.getData();
            Cursor cursor = managedQuery(contactData, null, null, null, null);
            cursor.moveToFirst();
            String num = this.getContactPhone(cursor);
        }

    }

    private String getContactPhone(Cursor cursor) {
        int phoneColumn = cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER);
        int phoneNum = cursor.getInt(phoneColumn);
        final List<String> result = new ArrayList<>();
        position = 0;
        if (phoneNum > 0) {
            int idColumn = cursor.getColumnIndex(ContactsContract.Contacts._ID);// 獲得聯絡人的ID號
            String contactId = cursor.getString(idColumn);
            // 獲得聯絡人電話的cursor
            Cursor phone = getContentResolver().query(
                    ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
                    ContactsContract.CommonDataKinds.Phone.CONTACT_ID + "=" + contactId, null, null);
            if (phone.moveToFirst()) {
                for (; !phone.isAfterLast(); phone.moveToNext()) {
                    int index = phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
                    int typeindex = phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.TYPE);
                    String phoneNumber = phone.getString(index);
                    result.add(phoneNumber);
                }
                if (!phone.isClosed()) {
                    phone.close();
                }
            }
        }

        if (result.size() > 1) {//如果號碼多於2個，則彈出對話方塊讓他選擇
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            int size = result.size();
            builder.setTitle("請選擇一個號碼").setItems(result.toArray(new String[size]), new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    position = which;
                }
            }).create().show();
        }

        return result.get(position);
    }