final AlertDialog.Builder builder = new AlertDialog.Builder(getApplicationContext()); 을
final AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this); 로 바꾼다.
그래도 동작하지 않는다면 final을 지우고 다시 빌드
You need to use a Theme.AppCompat theme (or descendant) with this activity
Android Studio 0.4.5 Android documentation for creating custom dialog boxes: http://developer.android.com/guide/topics/ui/dialogs.html If you want a custom dialog, you can instead display an Acti...
stackoverflow.com
