antew

/**
 * Interface for Activities to implement to receive the result
 */
public interface LogoutDialogListener {

    public void performLogout();
    public void cancelLogout();
    
}

antew

public class LogoutDialogFragment extends DialogFragment implements
         OnClickListener {

     // Used to communicate the result back to the Activity
     private LogoutDialogListener listener;

antew

@Override
public void onAttach(Activity activity) {
    super.onAttach(activity);
    if (activity instanceof LogoutDialogListener) {
        listener = (LogoutDialogListener) activity;
    } else {
        throw new RuntimeException("The Activity must " +
                "implement the LogoutDialogListener interface!");
    }
}

antew

public LogoutDialogFragment() {};

antew

private static final String USERNAME = "Username"; 
...
public static LogoutDialogFragment newInstance(String username) { 
    LogoutDialogFragment fragment = new LogoutDialogFragment();

    // Add the username to the bundle of arguments for the fragment
    Bundle args = new Bundle();
    args.putString(USERNAME, username);
    fragment.setArguments(args);

antew

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    // Get the username from the arguments, if one isn't passed
    // we use a blank string so it still looks OK
    String username = "";
    if (getArguments().containsKey(USERNAME))
        username = ", " + getArguments().getString(USERNAME);

    // "Are you sure you want to log out, <username>?"
    String message 

antew

@Override
public void onClick(DialogInterface dialog, int which) {
    switch (which) {
        case DialogInterface.BUTTON_POSITIVE:
            listener.performLogout();
            break;

        case DialogInterface.BUTTON_NEGATIVE:
            listener.cancelLogout();
            break;

antew

@Override
public void performLogout() {
    Toast.makeText(this, 
                   "Received log out request!",
                   Toast.LENGTH_SHORT
                  ).show();

}

@Override

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Button logout = (Button) findViewById(R.id.logout);
logout.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View v) {
        LogoutDialogFragment logoutFragment = LogoutDialogFragment
                .newInstance();

        logoutFragment.show(getSupportFragmentManager(), "logout");
    }

antew

/**
  * Interface for Activities to implement to receive the result (the
  * username and password in this case)
  * 
  */
public interface LoginDialogListener {
    void onFinishLoginDialog(String username, String password);
}