![](/img/trans.png)
[英]Flutter image_cropper plugin error: "You need to use a Theme.AppCompat > theme (or descendant) with this activity"
[英]Flutter : local_auth: ^0.6.1 : PlatformException(error, You need to use a Theme.AppCompat theme (or descendant) with this activity., null)
我在使用包Local Auth集成我的应用程序时遇到问题,我已经按照有关配置包到我的应用程序的文档进行操作。 在文档中它说:
请注意,
local_auth
插件需要使用 FragmentActivity 而不是 Activity。 这可以通过切换到在清单中使用 FlutterFragmentActivity 而不是 FlutterActivity 来轻松完成(如果您要扩展基类,则使用您自己的 Activity 类)。
但是在我编辑MainActivity.kt后问题出现了:
package id.zeffry.debt_diary
import androidx.annotation.NonNull;
import io.flutter.embedding.android.FlutterFragmentActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugins.GeneratedPluginRegistrant
import android.os.Build
import android.view.ViewTreeObserver
import android.view.WindowManager
class MainActivity: FlutterFragmentActivity() {
override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
GeneratedPluginRegistrant.registerWith(flutterEngine);
}
}
I/flutter (22608): PlatformException(error, You need to use a Theme.AppCompat theme (or descendant) with this activity., null)
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:local_auth/local_auth.dart';
//? Testing Local Auth( Finger Print , Face Recognition, etc)
class TestingPage extends StatefulWidget {
static const routeNamed = "/testing-page";
@override
_TestingPageState createState() => _TestingPageState();
}
class _TestingPageState extends State<TestingPage> {
final LocalAuthentication auth = LocalAuthentication();
bool _canCheckBiometrics;
List<BiometricType> _availableBiometrics;
String _authorized = 'Not Authorized';
bool _isAuthenticating = false;
Future<void> _checkBiometrics() async {
bool canCheckBiometrics;
try {
canCheckBiometrics = await auth.canCheckBiometrics;
} on PlatformException catch (e) {
print(e);
}
if (!mounted) return;
setState(() {
_canCheckBiometrics = canCheckBiometrics;
});
}
Future<void> _getAvailableBiometrics() async {
List<BiometricType> availableBiometrics;
try {
availableBiometrics = await auth.getAvailableBiometrics();
} on PlatformException catch (e) {
print(e);
}
if (!mounted) return;
setState(() {
_availableBiometrics = availableBiometrics;
});
}
Future<void> _authenticate() async {
bool authenticated = false;
try {
setState(() {
_isAuthenticating = true;
_authorized = 'Authenticating';
});
authenticated = await auth.authenticateWithBiometrics(
localizedReason: 'Scan your fingerprint to authenticate',
useErrorDialogs: true,
stickyAuth: true);
setState(() {
_isAuthenticating = false;
_authorized = 'Authenticating';
});
} on PlatformException catch (e) {
print(e);
}
if (!mounted) return;
final String message = authenticated ? 'Authorized' : 'Not Authorized';
setState(() {
_authorized = message;
});
}
void _cancelAuthentication() {
auth.stopAuthentication();
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: ConstrainedBox(
constraints: const BoxConstraints.expand(),
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: <Widget>[
Text('Can check biometrics: $_canCheckBiometrics\n'),
RaisedButton(
child: const Text('Check biometrics'),
onPressed: _checkBiometrics,
),
Text('Available biometrics: $_availableBiometrics\n'),
RaisedButton(
child: const Text('Get available biometrics'),
onPressed: _getAvailableBiometrics,
),
Text('Current State: $_authorized\n'),
RaisedButton(
child: Text(_isAuthenticating ? 'Cancel' : 'Authenticate'),
onPressed:
_isAuthenticating ? _cancelAuthentication : _authenticate,
)
],
),
),
);
}
}
java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
at androidx.appcompat.app.AppCompatDelegateImpl.createSubDecor(AppCompatDelegateImpl.java:686)
at androidx.appcompat.app.AppCompatDelegateImpl.ensureSubDecor(AppCompatDelegateImpl.java:649)
at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:542)
at androidx.appcompat.app.AppCompatDialog.setContentView(AppCompatDialog.java:95)
at androidx.appcompat.app.AlertController.installContent(AlertController.java:232)
at androidx.appcompat.app.AlertDialog.onCreate(AlertDialog.java:279)
at android.app.Dialog.dispatchOnCreate(Dialog.java:389)
at android.app.Dialog.show(Dialog.java:293)
at androidx.fragment.app.DialogFragment.onStart(DialogFragment.java:486)
at androidx.fragment.app.Fragment.performStart(Fragment.java:2627)
at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManagerImpl.java:915)
at androidx.fragment.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManagerImpl.java:1238)
at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManagerImpl.java:1303)
at androidx.fragment.app.BackStackRecord.executeOps(BackStackRecord.java:439)
at androidx.fragment.app.FragmentManagerImpl.executeOps(FragmentManagerImpl.java:2076)
at androidx.fragment.app.FragmentManagerImpl.executeOpsTogether(FragmentManagerImpl.java:1866)
at androidx.fragment.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManagerImpl.java:1821)
at androidx.fragment.app.FragmentManagerImpl.execPendingActions(FragmentManagerImpl.java:1727)
at androidx.fragment.app.FragmentManagerImpl.executePendingTransactions(FragmentManagerImpl.java:183)
at androidx.biometric.BiometricPrompt.authenticateInternal(BiometricPrompt.java:749)
at androidx.biometric.BiometricPrompt.authenticate(BiometricPrompt.java:658)
at io.flutter.plugins.localauth.AuthenticationHelper$1.run(AuthenticationHelper.java:182)
at android.os.Handler.handleCallback(Handler.java:754)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:165)
at android.app.ActivityThread.main(ActivityThread.java:6375)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:912)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:802)
如果您收到此错误:
Exception has occurred. PlatformException (PlatformException(error, You need to use a Theme.AppCompat theme (or descendant) with this activity., null))
然后你需要这样做:
转到android > app > src > main > res > values > style.xml
改变
<style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
到
<style name="LaunchTheme" parent="Theme.AppCompat.Light.NoActionBar">
有关在 Kotlin 中设置MainActivity.kt
更多信息; 访问这里: https : //gist.github.com/akifarhan/f70a2c777651f2ea61a15eb92a5939c1
改变
<style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
在文件res/style.xml
中的 android 文件夹中
<style name="LaunchTheme" parent="@android:style/Theme.AppCompat.Black.NoTitleBar">
将主题更改为 AppCompat 后,显示的视图会出现问题 btw 启动画面和第一个小部件(通常与启动画面相同)。 现在有一个小的弹出 btw 两个图像,这非常烦人,我不得不删除这个超级功能并保持与 iOS 上相同的丑陋逻辑,并看到白屏 btw 启动主题和第一个小部件:(
<meta-data
android:name="io.flutter.embedding.android.SplashScreenDrawable"
android:resource="@drawable/launch_background"
/>
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.