小贝子编程

即使在将MainActivity更改为FlutterFragmentActivity()之后，flatter_strip



我正在使用flutter_stripe包处理我的应用程序中的付款，正如设置中所述，我已将app/src/main/kotlin/MainActivity.kt从更改为

class MainActivity: FlutterActivity() {
override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
GeneratedPluginRegistrant.registerWith(flutterEngine);
}

至

class MainActivity: FlutterFragmentActivity() {
override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
GeneratedPluginRegistrant.registerWith(flutterEngine);
}
}

但当我按下按钮执行一系列操作时，我会出现一系列我不理解的错误：

I/flutter (13121): Register card pressed
E/MethodChannel#flutter.stripe/payments(13121): Failed to handle method call
E/MethodChannel#flutter.stripe/payments(13121): android.view.InflateException: Binary XML file line #22 in com.vinny.fixit_cloud_biking:layout/card_input_widget: Binary XML file line #22 in com.vinny.fixit_cloud_biking:layout/card_input_widget: Error inflating class com.google.android.material.textfield.TextInputLayout
E/MethodChannel#flutter.stripe/payments(13121): Caused by: android.view.InflateException: Binary XML file line #22 in com.vinny.fixit_cloud_biking:layout/card_input_widget: Error inflating class com.google.android.material.textfield.TextInputLayout
E/MethodChannel#flutter.stripe/payments(13121): Caused by: java.lang.reflect.InvocationTargetException
E/MethodChannel#flutter.stripe/payments(13121):     at java.lang.reflect.Constructor.newInstance0(Native Method)
E/MethodChannel#flutter.stripe/payments(13121):     at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
E/MethodChannel#flutter.stripe/payments(13121):     at android.view.LayoutInflater.createView(LayoutInflater.java:856)
E/MethodChannel#flutter.stripe/payments(13121):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:1008)
E/MethodChannel#flutter.stripe/payments(13121):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:963)
E/MethodChannel#flutter.stripe/payments(13121):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:1125)
E/MethodChannel#flutter.stripe/payments(13121):     at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1086)
E/MethodChannel#flutter.stripe/payments(13121):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:1128)
E/MethodChannel#flutter.stripe/payments(13121):     at android.view.LayoutInflater.inflate(LayoutInflater.java:658)
E/MethodChannel#flutter.stripe/payments(13121):     at android.view.LayoutInflater.inflate(LayoutInflater.java:536)
E/MethodChannel#flutter.stripe/payments(13121):     at android.view.LayoutInflater.inflate(LayoutInflater.java:479)
E/MethodChannel#flutter.stripe/payments(13121):     at com.stripe.android.databinding.CardInputWidgetBinding.inflate(CardInputWidgetBinding.java:89)
E/MethodChannel#flutter.stripe/payments(13121):     at com.stripe.android.view.CardInputWidget.<init>(CardInputWidget.kt:62)
E/MethodChannel#flutter.stripe/payments(13121):     at com.stripe.android.view.CardInputWidget.<init>(CardInputWidget.kt:56)
E/MethodChannel#flutter.stripe/payments(13121):     at com.reactnativestripesdk.StripeSdkCardView.<init>(StripeSdkCardView.kt:35)
E/MethodChannel#flutter.stripe/payments(13121):     at com.reactnativestripesdk.StripeSdkCardViewManager.createViewInstance(StripeSdkCardViewManager.kt:58)
E/MethodChannel#flutter.stripe/payments(13121):     at com.reactnativestripesdk.StripeSdkCardViewManager.setCardDetails(StripeSdkCardViewManager.kt:86)
E/MethodChannel#flutter.stripe/payments(13121):     at com.flutter.stripe.StripeAndroidPlugin.onMethodCall(StripeAndroidPlugin.kt:123)
E/MethodChannel#flutter.stripe/payments(13121):     at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
E/MethodChannel#flutter.stripe/payments(13121):     at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:84)
E/MethodChannel#flutter.stripe/payments(13121):     at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:865)
E/MethodChannel#flutter.stripe/payments(13121):     at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#flutter.stripe/payments(13121):     at android.os.MessageQueue.next(MessageQueue.java:335)
E/MethodChannel#flutter.stripe/payments(13121):     at android.os.Looper.loop(Looper.java:193)
E/MethodChannel#flutter.stripe/payments(13121):     at android.app.ActivityThread.main(ActivityThread.java:8059)
E/MethodChannel#flutter.stripe/payments(13121):     at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#flutter.stripe/payments(13121):     at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:656)
E/MethodChannel#flutter.stripe/payments(13121):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:967)
E/MethodChannel#flutter.stripe/payments(13121): Caused by: java.lang.IllegalArgumentException: The style on this component requires your app theme to be Theme.AppCompat (or a descendant).
E/MethodChannel#flutter.stripe/payments(13121):     at com.google.android.material.internal.ThemeEnforcement.checkTheme(ThemeEnforcement.java:243)
E/MethodChannel#flutter.stripe/payments(13121):     at com.google.android.material.internal.ThemeEnforcement.checkAppCompatTheme(ThemeEnforcement.java:213)
E/MethodChannel#flutter.stripe/payments(13121):     at com.google.android.material.internal.ThemeEnforcement.checkCompatibleTheme(ThemeEnforcement.java:148)
E/MethodChannel#flutter.stripe/payments(13121):     at com.google.android.material.internal.ThemeEnforcement.obtainTintedStyledAttributes(ThemeEnforcement.java:115)
E/MethodChannel#flutter.stripe/payments(13121):     at com.google.android.material.textfield.TextInputLayout.<init>(TextInputLayout.java:469)
E/MethodChannel#flutter.stripe/payments(13121):     at com.google.android.material.textfield.TextInputLayout.<init>(TextInputLayout.java:428)
E/MethodChannel#flutter.stripe/payments(13121):     ... 28 more
E/flutter (13121): [ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: PlatformException(error, Binary XML file line #22 in com.vinny.fixit_cloud_biking:layout/card_input_widget: Binary XML file line #22 in com.vinny.fixit_cloud_biking:layout/card_input_widget: Error inflating class com.google.android.material.textfield.TextInputLayout, null, android.view.InflateException: Binary XML file line #22 in com.vinny.fixit_cloud_biking:layout/card_input_widget: Binary XML file line #22 in com.vinny.fixit_cloud_biking:layout/card_input_widget: Error inflating class com.google.android.material.textfield.TextInputLayout
E/flutter (13121): Caused by: android.view.InflateException: Binary XML file line #22 in com.vinny.fixit_cloud_biking:layout/card_input_widget: Error inflating class com.google.android.material.textfield.TextInputLayout
E/flutter (13121): Caused by: java.lang.reflect.InvocationTargetException
E/flutter (13121):  at java.lang.reflect.Constructor.newInstance0(Native Method)
E/flutter (13121):  at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
E/flutter (13121):  at android.view.LayoutInflater.createView(LayoutInflater.java:856)
E/flutter (13121):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:1008)
E/flutter (13121):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:963)
E/flutter (13121):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:1125)
E/flutter (13121):  at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1086)
E/flutter (13121):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:1128)
E/flutter (13121):  at android.view.LayoutInflater.inflate(LayoutInflater.java:658)
E/flutter (13121):  at android.view.LayoutInflater.inflate(LayoutInflater.java:536)
E/flutter (13121):  at android.view.LayoutInflater.inflate(LayoutInflater.java:479)
E/flutter (13121):  at com.stripe.android.databinding.CardInputWidgetBinding.inflate(CardInputWidgetBinding.java:89)
E/flutter (13121):  at com.stripe.android.view.CardInputWidget.<init>(CardInputWidget.kt:62)
E/flutter (13121):  at com.stripe.android.view.CardInputWidget.<init>(CardInputWidget.kt:56)
E/flutter (13121):  at com.reactnativestripesdk.StripeSdkCardView.<init>(StripeSdkCardView.kt:35)
E/flutter (13121):  at com.reactnativestripesdk.StripeSdkCardViewManager.createViewInstance(StripeSdkCardViewManager.kt:58)
E/flutter (13121):  at com.reactnativestripesdk.StripeSdkCardViewManager.setCardDetails(StripeSdkCardViewManager.kt:86)
E/flutter (13121):  at com.flutter.stripe.StripeAndroidPlugin.onMethodCall(StripeAndroidPlugin.kt:123)
E/flutter (13121):  at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
E/flutter (13121):  at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:84)
E/flutter (13121):  at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:865)
E/flutter (13121):  at android.os.MessageQueue.nativePollOnce(Native Method)
E/flutter (13121):  at android.os.MessageQueue.next(MessageQueue.java:335)
E/flutter (13121):  at android.os.Looper.loop(Looper.java:193)
E/flutter (13121):  at android.app.ActivityThread.main(ActivityThread.java:8059)
E/flutter (13121):  at java.lang.reflect.Method.invoke(Native Method)
E/flutter (13121):  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:656)
E/flutter (13121):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:967)
E/flutter (13121): Caused by: java.lang.IllegalArgumentException: The style on this component requires your app theme to be Theme.AppCompat (or a descendant).
E/flutter (13121):  at com.google.android.material.internal.ThemeEnforcement.checkTheme(ThemeEnforcement.java:243)
E/flutter (13121):  at com.google.android.material.internal.ThemeEnforcement.checkAppCompatTheme(ThemeEnforcement.java:213)
E/flutter (13121):  at com.google.android.material.internal.ThemeEnforcement.checkCompatibleTheme(ThemeEnforcement.java:148)
E/flutter (13121):  at com.google.android.material.internal.ThemeEnforcement.obtainTintedStyledAttributes(ThemeEnforcement.java:115)
E/flutter (13121):  at com.google.android.material.textfield.TextInputLayout.<init>(TextInputLayout.java:469)
E/flutter (13121):  at com.google.android.material.textfield.TextInputLayout.<init>(TextInputLayout.java:428)
E/flutter (13121):  ... 28 more
E/flutter (13121): )
E/flutter (13121): #0      JSONMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:164:7)
E/flutter (13121): #1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:156:18)
E/flutter (13121): <asynchronous suspension>
E/flutter (13121): #2      MethodChannelStripe.dangerouslyUpdateCardDetails (package:stripe_platform_interface/src/method_channel_stripe.dart:221:5)
E/flutter (13121): <asynchronous suspension>
E/flutter (13121): #3      Stripe.dangerouslyUpdateCardDetails (package:flutter_stripe/src/stripe.dart:348:12)
E/flutter (13121): <asynchronous suspension>
E/flutter (13121): #4      _NewCardScreenState.build.<anonymous closure>.<anonymous closure> (package:fixit_cloud_biking/Screens/new_card_screen.dart:605:29)
E/flutter (13121): <asynchronous suspension>
E/flutter (13121):

我是否错过了更改或设置其他内容以使用FlutterFragmentActivity()？非常感谢。这是页面的全部代码：

class _NewCardScreenState extends State<NewCardScreen> {
final GlobalKey<FormState> formKey = GlobalKey<FormState>();
GlobalKey<ScaffoldState> scaffoldKey = GlobalKey<ScaffoldState>();
dynamic backButton = Platform.isIOS ? CupertinoIcons.back : Icons.arrow_back;
CardDetails _card = CardDetails();
Map<String, dynamic> jsonCard = {
'type': 'card',
'card': {
'number': '',
'exp_month': '',
'exp_year': '',
'cvc': '',
},
};
PaymentMethod paymentMethod;
String cardHolderName = '';
bool isCvvFocused = false;
bool useGlassMorphism = true;
bool useBackgroundImage = false;
@override
void initState() {
super.initState();
}
void update() => setState(() {});
@override
void didChangeDependencies() {
super.didChangeDependencies();
}
@override
void dispose() {
super.dispose();
}
@override
Widget build(BuildContext context) {
return Stack(children: [
Image(image: widget.bgImage.image, height: MediaQuery.of(context).size.height, width: MediaQuery.of(context).size.width, fit: BoxFit.cover),
BlocBuilder<PaymentBloc, PaymentState>(builder: (context, state) {
print('∞∞∞∞∞ NewCardScreen state is: ${state.toString()}');
// if (state is SetupIntentCreated) {
//   if (_card.complete) {
//     // var params = PaymentMethodParams.fromJson(_card.toJson());
//     BillingDetails billingDetails = BillingDetails(
//         name: widget.user.name,
//         email: widget.user.email,
//         phone: widget.user.phoneNumber,
//         address: Address(
//             city: widget.user.city,
//             country: widget.user.country,
//             postalCode: widget.user.zipCode,
//             line1: widget.user.address,
//             line2: 'null',
//             state: 'null'));
//     PaymentMethodParams paymentMethodParams =
//         PaymentMethodParams.card(setupFutureUsage: PaymentIntentsFutureUsage.OnSession, billingDetails: billingDetails);
//     BlocProvider.of<PaymentBloc>(context)
//         .add(ConfirmSetupIntent(clientSecret: state.setupIntent.clientSecret, paymentMethodParams: paymentMethodParams));
//   }
// }
// if (state is SetupIntentSucceeded) {
//   Navigator.pop(context);
// }
// if (state is SetupIntentRequiresAction) {
//   // // var si = Stripe.instance.handleCardAction(state.setupIntent.clientSecret);
//   // if (_card.complete) {
//   //   var params = PaymentMethodParams.fromJson(_card.toJson());
//   //   BlocProvider.of<PaymentBloc>(context).add(ConfirmSetupIntent(clientSecret: state.setupIntent.clientSecret, paymentMethodParams: params));
//   // }
//   if (_card.complete) {
//     // var params = PaymentMethodParams.fromJson(_card.toJson());
//     BillingDetails billingDetails = BillingDetails(
//         name: widget.user.name,
//         email: widget.user.email,
//         phone: widget.user.phoneNumber,
//         address: Address(
//             city: widget.user.city,
//             country: widget.user.country,
//             postalCode: widget.user.zipCode,
//             line1: widget.user.address,
//             line2: 'null',
//             state: 'null'));
//     PaymentMethodParams paymentMethodParams =
//         PaymentMethodParams.card(setupFutureUsage: PaymentIntentsFutureUsage.OnSession, billingDetails: billingDetails);
//     BlocProvider.of<PaymentBloc>(context)
//         .add(ConfirmSetupIntent(clientSecret: state.setupIntent.clientSecret, paymentMethodParams: paymentMethodParams));
//   }
// }
// if (state is SetupIntentRequiresPaymentMethod) {
//   if (_card.complete) {
//     var params = PaymentMethodParams.fromJson(_card.toJson());
//     BlocProvider.of<PaymentBloc>(context).add(ConfirmSetupIntent(clientSecret: state.setupIntent.clientSecret, paymentMethodParams: params));
//   }
// }
return Scaffold(
key: scaffoldKey,
backgroundColor: Colors.black.withAlpha(150),
appBar: AppBar(
elevation: 0,
centerTitle: true,
leading: IconButton(
icon: Icon(backButton),
color: Colors.redAccent,
onPressed: () {
//                    cache.play('tableViewClose.mp3');
Navigator.pop(context);
}),
title: Text(
AppLocalizations.instance.text('New card'),
style: TextStyle(color: Colors.orange, fontSize: 22, fontWeight: FontWeight.w500, letterSpacing: 1),
),
backgroundColor: Colors.transparent,
),
body: Container(
padding: EdgeInsets.all(10),
child: Column(
children: <Widget>[
CreditCardWidget(
glassmorphismConfig: useGlassMorphism ? Glassmorphism.defaultConfig() : null,
cardNumber: jsonCard['card']['number'],
expiryDate: '${jsonCard['card']['exp_month']}/${jsonCard['card']['exp_year']}',
cardHolderName: cardHolderName,
cvvCode: jsonCard['card']['cvc'],
labelCardHolder: AppLocalizations.instance.text('Card holder'),
showBackView: isCvvFocused,
obscureCardNumber: false,
obscureCardCvv: false,
isHolderNameVisible: true,
cardBgColor: Colors.transparent,
backgroundImage: null,
isSwipeGestureEnabled: true,
onCreditCardWidgetChange: (CreditCardBrand creditCardBrand) {},
),
Expanded(
// flex: 3,
child: SingleChildScrollView(
child: Column(
children: <Widget>[
/// CardField not focusing
// Padding(
//   padding: EdgeInsets.all(16),
//   child: CardField(
//     controller: controller,
//     style: TextStyle(fontSize: 20, color: Colors.white),
//     decoration: InputDecoration(
//       enabled: true,
//       isDense: true,
//       border: OutlineInputBorder(),
//       focusColor: Colors.orange,
//       focusedBorder: OutlineInputBorder(
//         borderSide: BorderSide(
//           color: Colors.orange,
//           width: 5,
//         ),
//       ),
//     ),
//     numberHintText: AppLocalizations.instance.text('Card number placeholder'),
//     expirationHintText: AppLocalizations.instance.text('Expiring date placeholder'),
//     cvcHintText: AppLocalizations.instance.text('Cvc placeholder'),
//     cursorColor: Colors.white,
//     // autofocus: true,
//     onFocus: (b) {},
//     onCardChanged: (card) {
//       setState(() {
//         _card = card;
//       });
//     },
//   ),
// ),
/// CardForm not showing up
// CardFormField(
//   controller: controller,
//   backgroundColor: Colors.redAccent,
// ),
/// CreditCardForm
CreditCardForm(
formKey: formKey,
obscureCvv: false,
obscureNumber: false,
cardNumber: jsonCard['card']['number'],
cvvCode: jsonCard['card']['cvc'],
isHolderNameVisible: true,
isCardNumberVisible: true,
isExpiryDateVisible: true,
cardHolderName: cardHolderName,
expiryDate: '${jsonCard['card']['exp_month']}/${jsonCard['card']['exp_year']}',
themeColor: Colors.redAccent,
textColor: Colors.white,
cursorColor: Colors.orange,
cardNumberDecoration: InputDecoration(
enabled: true,
isDense: true,
hintText: AppLocalizations.instance.text('Card number placeholder'),
hintStyle: TextStyle(fontSize: 15, color: Colors.grey[350]),
border: OutlineInputBorder(),
focusedBorder: OutlineInputBorder(
borderSide: BorderSide(
color: Colors.orange,
width: 2,
),
),
filled: true,
fillColor: Colors.white.withAlpha(60),
),
expiryDateDecoration: InputDecoration(
enabled: true,
isDense: true,
hintText: AppLocalizations.instance.text('Expiring date placeholder'), //'nome',
hintStyle: TextStyle(fontSize: 15, color: Colors.grey[350]),
border: OutlineInputBorder(),
focusColor: Colors.lightGreenAccent,
focusedBorder: OutlineInputBorder(
borderSide: BorderSide(
color: Colors.orange,
width: 2,
),
),
filled: true,
fillColor: Colors.white.withAlpha(60),
),
cvvCodeDecoration: InputDecoration(
isDense: true,
hintText: AppLocalizations.instance.text('Cvc placeholder'), //'nome',
hintStyle: TextStyle(fontSize: 15, color: Colors.grey[350]),
border: OutlineInputBorder(),
focusColor: Colors.lightGreenAccent,
focusedBorder: OutlineInputBorder(
borderSide: BorderSide(
color: Colors.orange,
width: 2,
),
),
filled: true,
fillColor: Colors.white.withAlpha(60),
),
cardHolderDecoration: InputDecoration(
isDense: true,
hintText: AppLocalizations.instance.text('Card holder'),
hintStyle: TextStyle(fontSize: 15, color: Colors.grey[350]),
border: OutlineInputBorder(),
focusColor: Colors.lightGreenAccent,
focusedBorder: OutlineInputBorder(
borderSide: BorderSide(
color: Colors.orange,
width: 2,
),
),
filled: true,
fillColor: Colors.white.withAlpha(60),
),
onCreditCardModelChange: (CreditCardModel cardData) {
setState(() {
isCvvFocused = cardData.isCvvFocused;
cardHolderName = cardData.cardHolderName;
jsonCard['card']['exp_month'] = cardData.expiryDate.split('/').first;
jsonCard['card']['exp_year'] = cardData.expiryDate.split('/').last;
jsonCard['card']['number'] = cardData.cardNumber;
jsonCard['card']['cvc'] = cardData.cvvCode;
print('exp month is ${cardData.expiryDate.split('/').first} and exp year is ${cardData.expiryDate.split('/').last}');
if (cardData.cardNumber != null) {
_card = _card.copyWith(number: cardData.cardNumber);
}
if (cardData.expiryDate.split('/').first != '') {
_card = _card.copyWith(expirationMonth: int.parse(cardData.expiryDate.split('/').first));
}
if (cardData.expiryDate.split('/').last != '') {
_card = _card.copyWith(expirationYear: int.parse(cardData.expiryDate.split('/').last));
}
if (cardData.cvvCode.isNotEmpty) {
_card = _card.copyWith(cvc: cardData.cvvCode);
}
});
},
),
const SizedBox(
height: 20,
),
// ResponseCard(
//   response: controller.details.toJson().toPrettyString(),
// )
],
),
),
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
ElevatedButton.icon(
style: ButtonStyle(
elevation: MaterialStateProperty.all(0),
backgroundColor: MaterialStateProperty.all<Color>(Colors.orange),
),
onPressed: () async {
print('Register card pressed');
if (jsonCard['card']['exp_month'] != '' &&
jsonCard['card']['exp_month'] != null &&
jsonCard['card']['exp_year'] != '' &&
jsonCard['card']['exp_year'] != null &&
jsonCard['card']['number'] != '' &&
jsonCard['card']['number'] != null &&
jsonCard['card']['cvc'] != '' &&
jsonCard['card']['cvc'] != null) {
await Stripe.instance.dangerouslyUpdateCardDetails(_card);
final billingDetails = BillingDetails(
email: widget.user.email,
phone: widget.user.phoneNumber,
address: Address(
city: widget.user.city,
country: AppLocalizations.instance.text('Country code'),
line1: widget.user.address,
line2: '',
state: '',
postalCode: widget.user.zipCode,
),
);
paymentMethod = await Stripe.instance
.createPaymentMethod(PaymentMethodParams.card(
billingDetails: billingDetails,
))
.then((value) {
print('Stripe.instance.createPaymentMethod : $value');
}).catchError((e) {
print('Stripe.instance.createPaymentMethod error: $e');
});

PaymentMethodParams params = PaymentMethodParams.cardFromMethodId(paymentMethodId: paymentMethod.id, cvc: _card.cvc);
BlocProvider.of<PaymentBloc>(context).add(CreateSetupIntent(paymentMethodParams: params));
}
},
icon: Icon(
Icons.payment,
color: Colors.white,
),
label: Text(
AppLocalizations.instance.text('Register card'),
style: TextStyle(color: Colors.white, fontSize: 20),
)),
],
)
],
),
),
);
}),
]);
}
}

经过与示例应用程序的艰苦代码比较，我终于发现我的styles.xml中缺少一些代码其中我只有

<style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">

因此，在将其更改为以下代码后，它现在可以正常工作。

<?xml version="1.0" encoding="utf-8"?>
<resources>
<!--    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">-->
<style name="LaunchTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Show a splash screen on the activity. Automatically removed when
Flutter draws its first frame -->
<item name="android:windowBackground">@drawable/launch_background</item>
</style>
<style name="NormalTheme" parent="Theme.MaterialComponents">
<item name="android:windowBackground">?android:colorBackground</item>
</style>
</resources>

希望它能帮助别人。干杯

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