安卓自动安装，下载完成后报错

[developeng]

E/MethodChannel#flutter_app_upgrade(19928): Failed to handle method call E/MethodChannel#flutter_app_upgrade(19928): java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager, java.lang.String)' on a null object reference E/MethodChannel#flutter_app_upgrade(19928): at androidx.core.content.FileProvider.parsePathStrategy(FileProvider.java:605) E/MethodChannel#flutter_app_upgrade(19928): at androidx.core.content.FileProvider.getPathStrategy(FileProvider.java:579) E/MethodChannel#flutter_app_upgrade(19928): at androidx.core.content.FileProvider.getUriForFile(FileProvider.java:417) E/MethodChannel#flutter_app_upgrade(19928): at com.flutter.flutter_app_upgrade.FlutterAppUpgradePlugin.startInstall(FlutterAppUpgradePlugin.kt:180) E/MethodChannel#flutter_app_upgrade(19928): at com.flutter.flutter_app_upgrade.FlutterAppUpgradePlugin.onMethodCall(FlutterAppUpgradePlugin.kt:67) E/MethodChannel#flutter_app_upgrade(19928): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:226) E/MethodChannel#flutter_app_upgrade(19928): at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:85) E/MethodChannel#flutter_app_upgrade(19928): at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:631) E/MethodChannel#flutter_app_upgrade(19928): at android.os.MessageQueue.nativePollOnce(Native Method) E/MethodChannel#flutter_app_upgrade(19928): at android.os.MessageQueue.next(MessageQueue.java:326) E/MethodChannel#flutter_app_upgrade(19928): at android.os.Looper.loop(Looper.java:189) E/MethodChannel#flutter_app_upgrade(19928): at android.app.ActivityThread.main(ActivityThread.java:7201) E/MethodChannel#flutter_app_upgrade(19928): at java.lang.reflect.Method.invoke(Native Method) E/MethodChannel#flutter_app_upgrade(19928): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:499) E/MethodChannel#flutter_app_upgrade(19928): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:956) E/flutter (19928): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: PlatformException(error, Attempt to invoke virtual method 'android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager, java.lang.String)' on a null object reference, null) E/flutter (19928): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:569:7) E/flutter (19928): #1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:156:18) E/flutter (19928): E/flutter (19928): #2 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:329:12) E/flutter (19928): #3 FlutterUpgrade.installAppForAndroid (package:flutter_app_upgrade/src/flutter_upgrade.dart:32:27) E/flutter (19928): #4 _SimpleAppUpgradeWidget._downloadApk. (package:flutter_app_upgrade/src/simple_app_upgrade.dart:348:26) E/flutter (19928): #5 DioForNative.download.. (package:dio/src/entry/dio_for_native.dart:164:30) E/flutter (19928): #6 _rootRunUnary (dart:async/zone.dart:1192:38) E/flutter (19928): #7 _CustomZone.runUnary (dart:async/zone.dart:1085:19) E/flutter (19928): #8 _FutureListener.handleValue (dart:async/future_impl.dart:141:18) E/flutter (19928): #9 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:682:45) E/flutter (19928): #10 Future._propagateToListeners (dart:async/future_impl.dart:711:32) E/flutter (19928): #11 Future._completeWithValue (dart:async/future_impl.dart:526:5) E/flutter (19928): #12 Future._asyncComplete. (dart:async/future_impl.dart:556:7) E/flutter (19928): #13 _rootRun (dart:async/zone.dart:1184:13) E/flutter (19928): #14 _CustomZone.run (dart:async/zone.dart:1077:19) E/flutter (19928): #15 _CustomZone.runGuarded (dart:async/zone.dart:979:7) E/flutter (19928): #16 _CustomZone.bindCallbackGuarded. (dart:async/zone.dart:1019:23) E/flutter (19928): #17 _microtaskLoop (dart:async/schedule_microtask.dart:43:21) E/flutter (19928): #18 _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)

[developeng]

android:authorities="app包名.fileprovider"