如何集成 Square SDK 在Android中

问：

当我在片段上初始化Square SDK时，它会初始化，但不会触发任何响应。onActivityResult

@Override
public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);


CardEntry.handleActivityResult(data, result -> {
    if (result.isSuccess()) {
        CardDetails cardResult = result.getSuccessValue();
        Card card = cardResult.getCard();
        String nonce = cardResult.getNonce();
        Toast.makeText(getActivity(),
                        "Payment Success",
                        Toast.LENGTH_SHORT)
                .show();
    } else if (result.isCanceled()) {
        Toast.makeText(getActivity(),
                        "Canceled",
                        Toast.LENGTH_SHORT)
                .show();
    }
});

}