RxDialog.java

    @NonNull
    @CheckReturnValue
    public static Maybe<Boolean> confirm(
            @NonNull final AlertDialog.Builder builder,
            @StringRes final int positiveTitleRes,
            @StringRes final int negativeTitleRes
    ) {
        return Maybe.create(new MaybeOnSubscribe<Boolean>() {
            @Override
            public void subscribe(@NonNull final MaybeEmitter<Boolean> emitter) throws Exception {
                builder.setPositiveButton(positiveTitleRes, new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                if (!emitter.isDisposed()) emitter.onSuccess(true);
                            }
                        })
                        .setNegativeButton(negativeTitleRes, new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                if (!emitter.isDisposed()) emitter.onSuccess(false);
                            }
                        })
                        .setOnCancelListener(new DialogInterface.OnCancelListener() {
                            @Override
                            public void onCancel(DialogInterface dialog) {
                                if (!emitter.isDisposed()) emitter.onComplete();
                            }
                        });
            }
        });
    }