由于插件没有自动连接到活动

Question

我已经在现有的Android应用程序中添加了颤动，并且我一直在面对摄影器库不起作用的问题，显示以下错误。

Unhandled Exception: MissingPluginException(No implementation found for method pickImage on channel plugins.flutter.io/image_picker_android)

根据错误，我了解这是由于未注册生成的PluginRegistrant造成的，我必须覆盖configureflutterengine方法。由于我需要打开片段内的颤动模块，因此我无法使用flutterActivity扩展活动，因为它不支持getsupportFragmentManager。 我尝试使用FlutterFragmentActivity延长活动，并能够覆盖configureflutterengine方法，但随后遇到了以下错误。

ava.lang.IllegalArgumentException: No view found for id 0x245a3c5c (unknown) for fragment FlutterFragment{647abea (0b17a247-4e8e-42bc-b5f3-6ab0796e458b) id=0x245a3c5c flutter_fragment}

以下是我的mainActivity.java和activity_main.xml

mainActivity.java

package com.mch.testplugin;

import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.FrameLayout;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import io.flutter.embedding.android.FlutterActivity;
import io.flutter.embedding.android.FlutterFragment;
import io.flutter.embedding.android.FlutterFragmentActivity;
import io.flutter.embedding.engine.FlutterEngine;
import io.flutter.embedding.engine.FlutterEngineCache;
import io.flutter.embedding.engine.dart.DartExecutor;
import io.flutter.plugins.GeneratedPluginRegistrant;

public class MainActivity extends AppCompatActivity {

Context mContext;
FlutterFragment flutterFragment;
private static final String TAG_FLUTTER_FRAGMENT = "flutter_fragment";
FlutterEngine mFlutterEngine;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mContext = this;
    setContentView(R.layout.activity_main);

    Button myButton = findViewById(R.id.myButton);
    myButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            flutterFragment = (FlutterFragment) getSupportFragmentManager()
                    .findFragmentByTag(TAG_FLUTTER_FRAGMENT);

            // Create and attach a FlutterFragment if one does not exist.
            if (flutterFragment == null) {
                flutterFragment = FlutterFragment.createDefault();

                flutterFragment = FlutterFragment.withNewEngine()
                        .initialRoute("/")
                        .build();

                getSupportFragmentManager()
                        .beginTransaction()
                        .add(
                                R.id.frame_layout,
                                flutterFragment,
                                TAG_FLUTTER_FRAGMENT
                        )
                        .commit();


            }
    });

}


//    @Override
//    public void configureFlutterEngine(@NonNull FlutterEngine flutterEngine) {
////        super.configureFlutterEngine(flutterEngine);
//        mFlutterEngine = flutterEngine;
//        GeneratedPluginRegistrant.registerWith(new FlutterEngine(this));
//    }
}

Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout       xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">

<Button
    android:id="@+id/myButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Hello World!" />

<FrameLayout
    android:id="@+id/frame_layout"
    android:layout_width="match_parent"
    android:layout_height="200dp" />

</androidx.constraintlayout.widget.ConstraintLayout>'

有人可以指导我正确的方法吗？感谢您的帮助。

Answer 1

针对类似问题的通常解决方案就是停止应用程序并再次按下运行按钮