11-1. 팝업대화상자

※Alert Dialog

※ 구현

MainActivity

public class MainActivity extends Activity {

      Button btn;

      

      @Override

      protected void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.activity_main);

            

            btn = (Button) findViewById(R.id.bt_01);

            btn.setOnClickListener(listener);

                  

      }

      

      OnClickListener listener = new OnClickListener() {

            

            @Override

            public void onClick(View v) {

                  // TODO Auto-generated method stub

                  new AlertDialog.Builder(MainActivity.this)

                        .setTitle("점심메뉴")

                        .setMessage("짜장면 어떠세요?")

                        .setIcon(R.drawable.ic_launcher)

                        .setPositiveButton("OK", new DialogInterface.OnClickListener() {

                              @Override

                              public void onClick(DialogInterface dialog, int which) {

                                    // TODO Auto-generated method stub

                                    Toast.makeText(MainActivity.this, "짜장면주문", Toast.LENGTH_SHORT).show();

                              }

                        })

                        .setNegativeButton("NO", new DialogInterface.OnClickListener(){

                              @Override

                                    public void onClick(DialogInterface dialog, int which) {

                                          // TODO Auto-generated method stub

                                          Toast.makeText(MainActivity.this, "주문취소", Toast.LENGTH_SHORT).show();

                                    }

                        }).show();

            }

      };

}

activity_main

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.androidex2.MainActivity" >

   <Button

       android:id="@+id/bt_01"

       android:layout_width="match_parent"

       android:layout_height="wrap_content"

       android:padding="30px"

       android:text="Alert Dialog"

       />

</RelativeLayout>