在 Flutter 中配置 local_auth 插件

Question

我的项目，使用 kotlin，当我想使用 Local_auth 插件时，出现以下错误：

PlatformException(no_fragment_activity, local_auth plugin requires activity to be a FragmentActivity., null)

local_auth 的例子说的是：

package io.flutter.plugins.localauthexample;

import io.flutter.embedding.android.FlutterFragmentActivity;
import io.flutter.embedding.engine.FlutterEngine;
import io.flutter.plugins.localauth.LocalAuthPlugin;

public class MainActivity extends FlutterFragmentActivity {
  // TODO(bparrishMines): Remove this once v2 of GeneratedPluginRegistrant rolls to stable. https://github.com/flutter/flutter/issues/42694
  @Override
  public void configureFlutterEngine(FlutterEngine flutterEngine) {
    flutterEngine.getPlugins().add(new LocalAuthPlugin());
  }
}

和

package io.flutter.plugins.localauthexample;

import android.os.Bundle;
import io.flutter.app.FlutterFragmentActivity;
import io.flutter.plugins.GeneratedPluginRegistrant;

public class EmbeddingV1Activity extends FlutterFragmentActivity {
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    GeneratedPluginRegistrant.registerWith(this);
  }
}

但问题是我不了解 kotlin，也不知道如何创建我的 kotlin 文件。

另外，我猜（我不确定），它可能是新版本中的一个颤振错误。

Answer 1

我通过将 FlutterActivity 更改为 FlutterFragmentActivity 来修复我的问题 在：

/android/app/src/main/kotlin/../MainActivity.kt

Answer 2

打开MainActivity.kt，修改如下。

package com.[your.package]

import androidx.annotation.NonNull;
import io.flutter.embedding.android.FlutterFragmentActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugins.GeneratedPluginRegistrant

class MainActivity: FlutterFragmentActivity() {
    override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
        GeneratedPluginRegistrant.registerWith(flutterEngine);
    }
}

欲了解更多信息，请查看：

https://gist.github.com/akifarhan/f70a2c777651f2ea61a15eb92a5939c1

Answer 3

把MainActivity.kt文件的代码改成这个

import androidx.annotation.NonNull;
import io.flutter.embedding.android.FlutterFragmentActivity
import io.flutter.embedding.android.FlutterActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugins.GeneratedPluginRegistrant

class MainActivity: FlutterFragmentActivity() {
    override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
        GeneratedPluginRegistrant.registerWith(flutterEngine);
    }
}