Flutter & Shared_Preference & Intro Slider : Shared_Preference produces exception
Why did my running process stop? Why was I kicked out of the process?
There are always similar problems in mobile app development. You should get used to this. Most of the answers will be something like this:
- restart IDE,
flutter pub cache repair
,flutter clean
.
Punreach Rany
Updated on December 25, 2022Comments
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Punreach Rany 11 months
Flutter & Shared_Preference & Intro Slider: Shared_Preference produces exception. I wanted to create an introduction slider. So I use shared_preference (Detect if the user uses the app for the first time) and intro_slider plugin to make. For some reason, I got this exception error, which stopped my emulator immediately. In other word, the app was installed but I was kicked out from the app and my running process just stopped.
Since the app was already installed, I tried to open it manually. And it worked fine.
Why did my running process stop? Why was I kicked out from the process?
Main code
import 'package:PhotoEarn/screens/wrapper.dart'; import 'package:flutter/material.dart'; import 'package:shared_preferences/shared_preferences.dart'; import 'introduction_slider/introduction_slider.dart'; class AppStarter extends StatefulWidget { @override _AppStarterState createState() => _AppStarterState(); } class _AppStarterState extends State<AppStarter> { @override void initState() { super.initState(); // checkIsFirstTime(); } Future<Widget> checkIsFirstTime() async { final SharedPreferences prefs = await SharedPreferences.getInstance(); final bool isFirstTime = prefs.getBool('isFirstTime'); // check is null or true if (isFirstTime == null || isFirstTime) { prefs.setBool('isFirstTime', false); Navigator.pushReplacement( context, MaterialPageRoute( builder: (context) => IntroductionSlider(), //builder: (context) => ImageEvaluation(), //builder: (context) => CameraTwo(), ), ); } else { Navigator.pushReplacement( context, MaterialPageRoute( builder: (context) => Wrapper(), //builder: (context) => ImageEvaluation(), //builder: (context) => CameraTwo(), ), ); } } @override Widget build(BuildContext context) { return Scaffold(); } }
Error message
(base) Punreachs-MacBook-Pro:PhotoEarn punreachrany$ flutter run Using hardware rendering with device AOSP on IA Emulator. If you notice graphics artifacts, consider enabling software rendering with "--enable-software-rendering". Launching lib/main.dart on AOSP on IA Emulator in debug mode... Running Gradle task 'assembleDebug'... Running Gradle task 'assembleDebug'... Done 7,2s ✓ Built build/app/outputs/flutter-apk/app-debug.apk. Installing build/app/outputs/flutter-apk/app.apk... 3,2s Waiting for AOSP on IA Emulator to report its views... 4ms D/EGL_emulation( 8483): eglMakeCurrent: 0xdc517240: ver 3 0 (tinfo 0xdc4a6d00) D/eglCodecCommon( 8483): setVertexArrayObject: set vao to 0 (0) 1 0 I/sterable.pe.an( 8483): Rejecting re-init on previously-failed class java.lang.Class<com.google.firebase.messaging.FirebaseMessagingService>: java.lang.VerifyError: Superclass com.google.firebase.iid.zzb of com.google.firebase.messaging.FirebaseMessagingService is declared final (declaration of 'com.google.firebase.messaging.FirebaseMessagingService' appears in /data/app/com.oysterable.pe.and-x4wuluezItpEc-2nGrSGUg==/base.apk!classes3.dex) I/sterable.pe.an( 8483): at java.lang.Class java.lang.VMClassLoader.findLoadedClass(java.lang.ClassLoader, java.lang.String) (VMClassLoader.java:-2) I/sterable.pe.an( 8483): at java.lang.Class java.lang.ClassLoader.findLoadedClass(java.lang.String) (ClassLoader.java:738) I/sterable.pe.an( 8483): at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:363) I/sterable.pe.an( 8483): at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312) I/sterable.pe.an( 8483): at android.app.Service android.app.AppComponentFactory.instantiateService(java.lang.ClassLoader, java.lang.String, android.content.Intent) (AppComponentFactory.java:103) I/sterable.pe.an( 8483): at android.app.Service androidx.core.app.CoreComponentFactory.instantiateService(java.lang.ClassLoader, java.lang.String, android.content.Intent) (CoreComponentFactory.java:66) I/sterable.pe.an( 8483): at void android.app.ActivityThread.handleCreateService(android.app.ActivityThread$CreateServiceData) (ActivityThread.java:3514) I/sterable.pe.an( 8483): at void android.app.ActivityThread.access$1300(android.app.ActivityThread, android.app.ActivityThread$CreateServiceData) (ActivityThread.java:199) I/sterable.pe.an( 8483): at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1666) I/sterable.pe.an( 8483): at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:106) I/sterable.pe.an( 8483): at void android.os.Looper.loop() (Looper.java:193) I/sterable.pe.an( 8483): at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6669) I/sterable.pe.an( 8483): at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2) I/sterable.pe.an( 8483): at void com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run() (RuntimeInit.java:493) I/sterable.pe.an( 8483): at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:858) I/sterable.pe.an( 8483): D/AndroidRuntime( 8483): Shutting down VM E/AndroidRuntime( 8483): FATAL EXCEPTION: main E/AndroidRuntime( 8483): Process: com.oysterable.pe.and, PID: 8483 E/AndroidRuntime( 8483): java.lang.VerifyError: Superclass com.google.firebase.iid.zzb of com.google.firebase.messaging.FirebaseMessagingService is declared final (declaration of 'com.google.firebase.messaging.FirebaseMessagingService' appears in /data/app/com.oysterable.pe.and-x4wuluezItpEc-2nGrSGUg==/base.apk!classes3.dex) E/AndroidRuntime( 8483): at java.lang.VMClassLoader.findLoadedClass(Native Method) E/AndroidRuntime( 8483): at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:738) E/AndroidRuntime( 8483): at java.lang.ClassLoader.loadClass(ClassLoader.java:363) E/AndroidRuntime( 8483): at java.lang.ClassLoader.loadClass(ClassLoader.java:312) E/AndroidRuntime( 8483): at android.app.AppComponentFactory.instantiateService(AppComponentFactory.java:103) E/AndroidRuntime( 8483): at androidx.core.app.CoreComponentFactory.instantiateService(CoreComponentFactory.java:66) E/AndroidRuntime( 8483): at android.app.ActivityThread.handleCreateService(ActivityThread.java:3514) E/AndroidRuntime( 8483): at android.app.ActivityThread.access$1300(ActivityThread.java:199) E/AndroidRuntime( 8483): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1666) E/AndroidRuntime( 8483): at android.os.Handler.dispatchMessage(Handler.java:106) E/AndroidRuntime( 8483): at android.os.Looper.loop(Looper.java:193) E/AndroidRuntime( 8483): at android.app.ActivityThread.main(ActivityThread.java:6669) E/AndroidRuntime( 8483): at java.lang.reflect.Method.invoke(Native Method) E/AndroidRuntime( 8483): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) E/AndroidRuntime( 8483): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) I/Process ( 8483): Sending signal. PID: 8483 SIG: 9 Lost connection to device. Syncing files to device AOSP on IA Emulator... Could not update files on device: HttpException: Connection closed before full header was received, uri = http://127.0.0.1:55559/9hULGLtexbI=/ Syncing files to device AOSP on IA Emulator... (base) Punreachs-MacBook-Pro:PhotoEarn punreachrany$