onSaveInstanceState |後無法執行操作AndroidPay

Question

我在我的一個片段中使用Android Pay。這裏是我的片段如何（相關部分）如下：

public class PaymentsFragment extends Fragment implements View.OnClickListener, GoogleApiClient.OnConnectionFailedListener { 

private GoogleApiClient mGoogleApiClient; 
private MaskedWallet mMaskedWallet; 

@Override 
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { 
mGoogleApiClient = new GoogleApiClient.Builder(getActivity()) 
       .addOnConnectionFailedListener(this) 
       .addApi(Wallet.API, new Wallet.WalletOptions.Builder() 
         .setEnvironment(BuildConfig.DEBUG ? WalletConstants.ENVIRONMENT_TEST : WalletConstants.ENVIRONMENT_PRODUCTION) 
         .setTheme(WalletConstants.THEME_LIGHT) 
         .build()) 
       .enableAutoManage(getActivity(), this) 
       .build(); 

Wallet.Payments.isReadyToPay(mGoogleApiClient).setResultCallback(
       new ResultCallback<BooleanResult>() { 
        @Override 
        public void onResult(@NonNull BooleanResult booleanResult) { 
         if (booleanResult.getStatus().isSuccess()) { 
          if (booleanResult.getValue()) { 
           showAndroidPay(); 
          } 
         } 
        } 
       }); 
    } 

private void showAndroidPay() { 
WalletFragmentStyle walletFragmentStyle = new WalletFragmentStyle() 
.setBuyButtonText(WalletFragmentStyle.BuyButtonText.LOGO_ONLY) 
.setBuyButtonAppearance(WalletFragmentStyle.BuyButtonAppearance.ANDROID_PAY_LIGHT) 
.setBuyButtonHeight(WalletFragmentStyle.Dimension.UNIT_DIP, 46); 

    WalletFragmentOptions walletFragmentOptions = WalletFragmentOptions.newBuilder() 
       .setEnvironment(BuildConfig.DEBUG ? WalletConstants.ENVIRONMENT_TEST : WalletConstants.ENVIRONMENT_PRODUCTION) 
       .setFragmentStyle(walletFragmentStyle) 
       .setTheme(WalletConstants.THEME_LIGHT) 
       .setMode(WalletFragmentMode.BUY_BUTTON) 
       .build(); 

     PaymentMethodTokenizationParameters params = null; 
     if (requestMethod.getGateway().getType() == PaymentGateway.PaymentGatewayType.STRIPE) { 
      params = PaymentMethodTokenizationParameters.newBuilder() 
        .setPaymentMethodTokenizationType(PaymentMethodTokenizationType.PAYMENT_GATEWAY) 
        .addParameter(GOOGLE_WALLET_GATEWAY, PaymentGateway.PaymentGatewayType.STRIPE.toString().toLowerCase()) 
        .addParameter(GOOGLE_WALLET_STRIPE_KEY, ((StripePaymentGateway) requestMethod.getGateway()).getPublishableKey()) 
        .addParameter(GOOGLE_WALLET_STRIPE_VERSION, com.stripe.Stripe.VERSION) 
        .build(); 
     } else { 
      //later 
     } 

     MaskedWalletRequest maskedWalletRequest = MaskedWalletRequest.newBuilder() 
       .setMerchantName("") 
       .setPaymentMethodTokenizationParameters(params) 
       .setPhoneNumberRequired(false) 
       .setShippingAddressRequired(false) 
       .setEstimatedTotalPrice(100.0) 
       .setCurrencyCode("USD") 
       .build(); 

     WalletFragmentInitParams initParams = WalletFragmentInitParams.newBuilder() 
       .setMaskedWalletRequest(maskedWalletRequest) 
       .setMaskedWalletRequestCode(LOADER_MASKED_WALLET_REQUEST_CODE) 
       .build(); 

     SupportWalletFragment walletFragment = SupportWalletFragment.newInstance(walletFragmentOptions); 
     walletFragment.initialize(initParams); 

if (walletFragment != null) { 
      getFragmentManager().beginTransaction() 
        .replace(R.id.androidpay_fragment_holder, walletFragment) 
        .commit(); 

     } 
    } 
} 

現在，當我嘗試點擊AndroidPay按鈕，應用程序崩潰，出現異常後，該裝置旋轉：

java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState

在我致力於showAndroidPay()方法的時候。我知道這article其中說，不應該有異步方法提交FragmentTransaction。但在我的情況下，當我從回調中收到成功時，我只能顯示Android Pay選項。這就是即使sample app這樣做。唯一的區別是它在Activity.onCreate()與Fragment.onCreaveView()在我的情況。

任何想法如何解決這個問題？

Answer 1

試試這個：

if (walletFragment != null) { 
      getFragmentManager().beginTransaction() 
        .replace(R.id.androidpay_fragment_holder, walletFragment) 
        .commitAllowingStateLoss(); 

     }