"MissingPluginException(在通道com.tekartik.sqflite上未找到方法getDatabasesPath的实现)"当我使用楼层数据库

问题描述

我正在尝试使用地板数据库，但是当我要构建数据库时，我的错误:

I'm trying to use floor database but when i want to build database i got below error :

E/flutter (26007): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: MissingPluginException(No implementation found for method getDatabasesPath on channel com.tekartik.sqflite)
E/flutter (26007): #0      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:154:7)
E/flutter (26007): <asynchronous suspension>
E/flutter (26007): #1      MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:329:12)
E/flutter (26007): #2      invokeMethod (package:sqflite/src/sqflite_impl.dart:17:13)
E/flutter (26007): #3      SqfliteDatabaseFactoryImpl.invokeMethod (package:sqflite/src/factory_impl.dart:82:7)
E/flutter (26007): #4      SqfliteDatabaseFactoryMixin.safeInvokeMethod.<anonymous closure> (package:sqflite_common/src/factory_mixin.dart:25:35)
E/flutter (26007): #5      wrapDatabaseException (package:sqflite/src/exception_impl.dart:7:32)
E/flutter (26007): #6      SqfliteDatabaseFactoryImpl.wrapDatabaseException (package:sqflite/src/factory_impl.dart:78:7)
E/flutter (26007): #7      SqfliteDatabaseFactoryMixin.safeInvokeMethod (package:sqflite_common/src/factory_mixin.dart:25:7)
E/flutter (26007): #8      SqfliteDatabaseFactoryMixin.getDatabasesPath (package:sqflite_common/src/factory_mixin.dart:143:26)
E/flutter (26007): #9      getDatabasesPath (package:sqflite/sqflite.dart:168:54)
E/flutter (26007): #10     DatabaseFactoryExtension.getDatabasePath (package:floor/src/sqflite_database_factory.dart:23:23)
E/flutter (26007): #11     _$AppDatabaseBuilder.build (package:fluttermiwallet/db/database.g.dart:46:40)
E/flutter (26007): #12     main (package:fluttermiwallet/main.dart:9:67)
E/flutter (26007): #13     _runMainZoned.<anonymous closure>.<anonymous closure> (dart:ui/hooks.dart:241:25)
E/flutter (26007): #14     _rootRun (dart:async/zone.dart:1184:13)
E/flutter (26007): #15     _CustomZone.run (dart:async/zone.dart:1077:19)
E/flutter (26007): #16     _runZoned (dart:async/zone.dart:1619:10)
E/flutter (26007): #17     runZonedGuarded (dart:async/zone.dart:1608:12)
E/flutter (26007): #18     _runMainZoned.<anonymous closure> (dart:ui/hooks.dart:233:5)
E/flutter (26007): #19     _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:301:19)
E/flutter (26007): #20     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:168:12)

我的版本:

Flutter 1.17.5 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 8af6b2f038 (13 days ago) • 2020-06-30 12:53:55 -0700
Engine • revision ee76268252
Tools • Dart 2.8.4

floor，floor_generator和build_runner的版本如下:

environment:
  sdk: ">=2.7.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter
  cupertino_icons: ^0.1.3
  floor: ^0.13.0

dev_dependencies:
  flutter_test:
    sdk: flutter
  floor_generator: ^0.13.0
  build_runner: ^1.7.3

在 main.dart 中，我使用$ FloorAppDatabase构建数据库:

in the main.dart i build my database using $FloorAppDatabase :

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  var db = await $FloorAppDatabase.databaseBuilder('mydb.db').build();
  runApp(MyApp(db));
}

并在android文件夹 GeneratedPluginRegistrant.java 中:

and in the android folder GeneratedPluginRegistrant.java:

package io.flutter.plugins;

import androidx.annotation.Keep;
import androidx.annotation.NonNull;

import io.flutter.embedding.engine.FlutterEngine;
import io.flutter.embedding.engine.plugins.shim.ShimPluginRegistry;

/**
 * Generated file. Do not edit.
 * This file is generated by the Flutter tool based on the
 * plugins that support the Android platform.
 */
@Keep
public final class GeneratedPluginRegistrant {
  public static void registerWith(@NonNull FlutterEngine flutterEngine) {
    ShimPluginRegistry shimPluginRegistry = new ShimPluginRegistry(flutterEngine);
      io.flutter.plugins.flutter_plugin_android_lifecycle.FlutterAndroidLifecyclePlugin.registerWith(shimPluginRegistry.registrarFor("io.flutter.plugins.flutter_plugin_android_lifecycle.FlutterAndroidLifecyclePlugin"));
    flutterEngine.getPlugins().add(new io.flutter.plugins.imagepicker.ImagePickerPlugin());
    flutterEngine.getPlugins().add(new io.flutter.plugins.pathprovider.PathProviderPlugin());
    flutterEngine.getPlugins().add(new io.flutter.plugins.sharedpreferences.SharedPreferencesPlugin());
    flutterEngine.getPlugins().add(new com.tekartik.sqflite.SqflitePlugin());
  }
}

和 MainActivity.kt :

import android.os.Bundle
import io.flutter.app.FlutterActivity
import io.flutter.plugins.imagepicker.ImagePickerPlugin


class MainActivity : FlutterActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        ImagePickerPlugin.registerWith(
                registrarFor("io.flutter.plugins.imagepicker.ImagePickerPlugin"))

    }

}

推荐答案

感谢所有试图回答我的问题的人

Thanks every one which tried to answer my question

我终于找到了答案，我必须在MainActivity中添加Sqflite插件: SqflitePlugin.registerWith(registrarFor("com.tekartik.sqflite.SqflitePlugin"))

i finally find my answer ,i must add Sqflite plugin in my MainActivity: SqflitePlugin.registerWith(registrarFor("com.tekartik.sqflite.SqflitePlugin"))

我的MainActivity更改如下:

my MainActivity changed as below:

import android.os.Bundle
import io.flutter.app.FlutterActivity
import io.flutter.plugins.imagepicker.ImagePickerPlugin
import com.tekartik.sqflite.SqflitePlugin


class MainActivity : FlutterActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        ImagePickerPlugin.registerWith(
                registrarFor("io.flutter.plugins.imagepicker.ImagePickerPlugin"))
        SqflitePlugin.registerWith(registrarFor("com.tekartik.sqflite.SqflitePlugin"))

    }

}

这篇关于"MissingPluginException(在通道com.tekartik.sqflite上未找到方法getDatabasesPath的实现)"当我使用楼层数据库的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！