public class MainActivity extends AppCompatActivity {
TextView message;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
message = (TextView) findViewById(R.id.textView);
Button button = (Button) findViewById(R.id.button);
assert button != null;
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String phoneNumber = null;
String NUMBER = ContactsContract.CommonDataKinds.Phone.NUMBER;
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
if (cur.getCount() > 0) {
while (cur.moveToNext()) ;
{
String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.
Contacts.HAS_PHONE_NUMBER))) > 0) {
//Contacts 테이블의 ID 값 을 가지고 Data 테이블의 정보를 찾아오는 방식.
message.append("\nNAME:" + name);
Cursor pCur = cr.query(ContactsContract.Data.CONTENT_URI, null,
ContactsContract.Data.CONTACT_ID
+ "=?"
+ " AND "
+ ContactsContract.Data.MIMETYPE
+ "='"
+ ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE
+ "'", new String[]{id}, null);
//전화번호 데이터 추출!!!!
while (pCur.moveToNext()) {
phoneNumber = pCur.getString(pCur.getColumnIndex(NUMBER));
message.append("\nPhHONE NUMBER :" + phoneNumber);
}
pCur.close();
message.append("\n\n");
}
}
}
}
});
}
}