Android Fragment Dialog

Android Fragment Dialog

BaseDialogFragment.java

public class BaseDialogFragment extends DialogFragment {

    public void showAllowStateLoss(@NotNull FragmentManager manager, @Nullable String tag) {
        FragmentTransaction fragmentTransaction = manager.beginTransaction();
        fragmentTransaction.add(this, tag);
        fragmentTransaction.commitAllowingStateLoss();
    }

    public void showAllowStateLoss(@NotNull FragmentManager manager) {
        showAllowStateLoss(manager, null);
    }
}

BaseFragmentDialog.java

public class AlertFragmentDialog extends BaseDialogFragment {

    public static final int STATE_OK_CANCEL = 0;
    public static final int STATE_YES_NO = 1;
    public static final int STATE_OK = 2;
    public static final int DEFAULT_ID = -1;
    
    private static final String EXTRAS_TITLE = "EXTRAS_TITLE";
    private static final String EXTRAS_MESSAGE = "EXTRAS_MESSAGE";
    private static final String EXTRAS_STATE = "EXTRAS_STATE";
    private static final String EXTRAS_ID = "EXTRAS_ID";

    public static BaseFragmentDialog newInstance(String title, String message, int state, int id) {
        BaseFragmentDialog dialog = new BaseFragmentDialog();

        Bundle bundle = new Bundle();
        bundle.putString(EXTRAS_TITLE, title);
        bundle.putString(EXTRAS_MESSAGE, message);
        bundle.putInt(EXTRAS_STATE, state);
        bundle.putInt(EXTRAS_ID, id);

        dialog.setArguments(bundle);

        return dialog;
    }

    public static BaseFragmentDialog newInstance(String title, String message, int state) {
        return newInstance(title, message, state, DEFAULT_ID);
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        AlertDialog.Builder dialog = new AlertDialog.Builder(getActivity());

        String positiveText = null;
        String negativeText = null;

        int state = getArguments().getInt(EXTRAS_STATE, STATE_OK_CANCEL);
        switch (state) {
            case STATE_YES_NO:
                positiveText = getString(R.string.Yes);
                negativeText = getString(R.string.No);
                break;
            case STATE_OK_CANCEL:
                positiveText = getString(android.R.string.ok);
                negativeText = getString(android.R.string.cancel);
                break;
            case STATE_OK:
                positiveText = getString(android.R.string.ok);
                break;
        }

        dialog.setTitle(getArguments().getString(EXTRAS_TITLE));
        dialog.setMessage(getArguments().getString(EXTRAS_MESSAGE));
        setPositiveListener(dialog, positiveText);

        if (negativeText != null) {
            setNegativeListener(dialog, negativeText);
        }

        setCancelable(false);

        return dialog.create();
    }

    private void setPositiveListener(AlertDialog.Builder dialog, CharSequence positive) {
        final int id = getArguments().getInt(EXTRAS_ID, DEFAULT_ID);

        dialog.setPositiveButton(positive, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                if (canTriggerActivityListener()) {
                    triggerPositiveActivityListener(id);
                }
            }
        });
    }

    private void setNegativeListener(AlertDialog.Builder dialog, CharSequence negative) {
        final int id = getArguments().getInt(EXTRAS_ID, DEFAULT_ID);

        dialog.setNegativeButton(negative, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();

                if (canTriggerActivityListener()) {
                    triggerNegativeActivityListener(id);
                }
            }
        });
    }

    private boolean canTriggerActivityListener() {
        return getActivity() instanceof AlertDialogListener;
    }

    private void triggerPositiveActivityListener(int dialogId) {
        Activity activity = getActivity();
        AlertDialogListener listener = (AlertDialogListener) activity;
        listener.onPositiveButtonClicked(dialogId);
    }

    private void triggerNegativeActivityListener(int dialogId) {
        Activity activity = getActivity();
        AlertDialogListener listener = (AlertDialogListener) activity;
        listener.onNegativeButtonClicked(dialogId);
    }

    public interface AlertDialogListener {

        public void onPositiveButtonClicked(int dialogId);
        public void onNegativeButtonClicked(int dialogId);
    }
}

DialogFactory.java

public final class DialogFactory {

    private static final String TAG_LOADING_DIALOG = "TAG_LOADING_DIALOG";

    public static void showLoadingDialog(@Nullable FragmentManager manager) {
        if(manager != null) {
            Fragment fragment = manager.findFragmentByTag(TAG_LOADING_DIALOG);
            if (fragment == null) {
                LoadingDialogFragment.newInstance().show(manager, TAG_LOADING_DIALOG);
            }
        }
    }

    public static void closeLoadingDialog(@Nullable FragmentManager manager) {
        if(manager != null) {
            Fragment fragment = manager.findFragmentByTag(TAG_LOADING_DIALOG);
            if (fragment != null) {
                LoadingDialogFragment dialogFragment = (LoadingDialogFragment) fragment;
                dialogFragment.dismiss();
            }
        }
    }
}

LoadingFragmentDialog.java

public class LoadingFragmentDialog extends BaseDialogFragment {

    private static final String EXTRAS_TITLE = "EXTRAS_TITLE";
    private static final String EXTRAS_MESSAGE = "EXTRAS_MESSAGE";

    public static LoadingFragmentDialog newInstance(String title, String message) {
        LoadingFragmentDialog dialog = new LoadingFragmentDialog();

        Bundle bundle = new Bundle();
        bundle.putString(EXTRAS_TITLE, title);
        bundle.putString(EXTRAS_MESSAGE, message);

        dialog.setArguments(bundle);

        return dialog;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        ProgressDialog  dialog = new ProgressDialog(getActivity());

        dialog.setTitle(getArguments().getString(EXTRAS_TITLE));
        dialog.setMessage(getArguments().getString(EXTRAS_MESSAGE));
        setCancelable(false);

        return dialog;
    }

}