[컴][안드로이드] 간단한 Dialog code

Simple Dialog Source code / 간단한 Dialog source code / 다이얼로그 소스 / 안드로이드에서 다이얼로그 만들기 / 팝업창 띄우기

간단한 Dialog

간단한 Dialog 를 만들어 봤다. ref. 1 의 소스를 거의 가져다 썼다. 이 곳의 소스는 DialogFragment 를 사용하는 방법이고, 예전에 쓰던 방식에 대한 소스(조금 더 오래된 소스)는 아래 링크에서 볼 수 있다.

• Android alert dialog example

여기서 적용해 보지는 않았지만, 화면이 작아지거나 할 때, Dialog 를 Fragment 의 형태로 create 되기도 한다. 관련된 code 는 ref. 1 을 확인하자.

Full source

전체 소스는아래에서 확인할 수 있다.

• AndroidSamples/SimpleDialog at master · i5on9i/AndroidSamples · GitHub

public class MainActivity extends AppCompatActivity
        implements MyDialog.MyDialogListener{

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button button = (Button) findViewById(R.id.btn_show_dialog);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showNoticeDialog();
            }
        });
    }



    public void showNoticeDialog() {
        // Create an instance of the dialog fragment and show it
        DialogFragment dialog = new MyDialog();
        dialog.show(getSupportFragmentManager(), "MyDialogFragment");
    }

    // The dialog fragment receives a reference to this Activity through the
    // Fragment.onAttach() callback, which it uses to call the following methods
    // defined by the NoticeDialogFragment.NoticeDialogListener interface
    @Override
    public void onDialogPositiveClick(DialogFragment dialog) {
        // User touched the dialog's positive button
        Toast.makeText(this, "OK", Toast.LENGTH_LONG).show();

    }

    @Override
    public void onDialogNegativeClick(DialogFragment dialog) {
        // User touched the dialog's negative button
        Toast.makeText(this, "No", Toast.LENGTH_LONG).show();

    }
}

public class MyDialog extends DialogFragment {

    /* The activity that creates an instance of this dialog fragment must
         * implement this interface in order to receive event callbacks.
         * Each method passes the DialogFragment in case the host needs to query it. */
    public interface MyDialogListener {
        public void onDialogPositiveClick(DialogFragment dialog);
        public void onDialogNegativeClick(DialogFragment dialog);
    }



    /** The system calls this only when creating the layout in a dialog. */
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the Builder class for convenient dialog construction
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

        // Get the layout inflater
        LayoutInflater inflater = getActivity().getLayoutInflater();

        // Inflate and set the layout for the dialog
        // Pass null as the parent view because its going in the dialog layout
        builder.setView(inflater.inflate(R.layout.dialog_select_box, null))
                .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        // FIRE ZE MISSILES!
                        mListener.onDialogPositiveClick(MyDialog.this);
                    }
                })
                .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        // User cancelled the dialog
                        mListener.onDialogNegativeClick(MyDialog.this);
                    }
                });
        // Create the AlertDialog object and return it
        return builder.create();

    }



    // Use this instance of the interface to deliver action events
    MyDialogListener mListener;

    // Override the Fragment.onAttach() method to instantiate the MyDialogListener
    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        // Verify that the host activity implements the callback interface
        try {
            // Instantiate the MyDialogListener so we can send events to the host
            mListener = (MyDialogListener) activity;
        } catch (ClassCastException e) {
            // The activity doesn't implement the interface, throw exception
            throw new ClassCastException(activity.toString()
                    + " must implement NoticeDialogListener");
        }
    }

}

Reference

• Dialogs | Android Developers