如何在Android中更改Braintree Card表单的默认UI

BraintreeFragment mBraintreeFragment;

// 初始化Braintree
BraintreeFragment.newInstance(this, "YOUR_CLIENT_TOKEN", new BraintreeInitListener() {
    @Override
    public void onBraintreeInitFinished(boolean success, Exception error, BraintreeFragment braintreeFragment) {
        if (success) {
            mBraintreeFragment = braintreeFragment;
            // 将自定义布局与Braintree绑定
            mBraintreeFragment.addListener(new PaymentMethodNonceCreatedListener() {
                @Override
                public void onPaymentMethodNonceCreated(PaymentMethodNonce paymentMethodNonce) {
                    // 处理支付结果
                }
            });
            mBraintreeFragment.addListener(new BraintreeCancelListener() {
                @Override
                public void onCancel(int requestCode) {
                    // 取消支付
                }
            });
            mBraintreeFragment.addListener(new BraintreeErrorListener() {
                @Override
                public void onError(Exception error) {
                    // 处理错误
                }
            });
            mBraintreeFragment.addListener(new BraintreePaymentMethodNonceListener() {
                @Override
                public void onPaymentMethodNonceRetrieved(PaymentMethodNonce paymentMethodNonce) {
                    // 获取支付方法
                }
            });
        } else {
            // 初始化失败
        }
    }
});

setContentView(R.layout.custom_card_form);

Button payButton = findViewById(R.id.pay_button);
payButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        // 生成支付令牌
        TokenizationRequest request = new TokenizationRequest()
                .cardholderName(cardholderNameEditText.getText().toString())
                .cardNumber(cardNumberEditText.getText().toString())
                .expirationMonth(expirationMonthEditText.getText().toString())
                .expirationYear(expirationYearEditText.getText().toString())
                .cvv(cvvEditText.getText().toString());
        
        // 发送支付令牌到服务器进行支付处理
        mBraintreeFragment.tokenize(request);
    }
});