报错修改

android/src/main/kotlin/com/clx/clx_listener_screen/CLXListenerScreenPlugin.kt

 package com.clx.clx_listener_screen
 
-import io.flutter.embedding.engine.plugins.FlutterPlugin
-import io.flutter.plugin.common.MethodCall
-import io.flutter.plugin.common.MethodChannel
-import io.flutter.plugin.common.MethodChannel.MethodCallHandler
-import io.flutter.plugin.common.MethodChannel.Result
+import android.content.ContentValues
+import android.content.Context
+import android.content.Intent
+import android.database.Cursor
+import android.net.Uri
+import android.os.Build
+import android.os.Bundle
+import android.os.Environment
+import android.provider.MediaStore
+import androidx.annotation.NonNull
+import androidx.annotation.RequiresApi
+import androidx.core.content.ContextCompat.startActivity
+
 
 /** CLXListenerScreenPlugin */
-class CLXListenerScreenPlugin: FlutterPlugin, MethodCallHandler {
-  /// The MethodChannel that will the communication between Flutter and native Android
-  ///
-  /// This local reference serves to register the plugin with the Flutter Engine and unregister it
-  /// when the Flutter Engine is detached from the Activity
-  private lateinit var channel : MethodChannel
-
-  override fun onAttachedToEngine(flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
-    channel = MethodChannel(flutterPluginBinding.binaryMessenger, "clx_listener_screen")
-    channel.setMethodCallHandler(this)
-  }
-
-  override fun onMethodCall(call: MethodCall, result: Result) {
-    if (call.method == "getPlatformVersion") {
-      result.success("Android ${android.os.Build.VERSION.RELEASE}")
-    } else {
-      result.notImplemented()
+class CLXListenerScreenPlugin : FlutterPlugin, MethodCallHandler {
+    /// The MethodChannel that will the communication between Flutter and native Android
+    ///
+    /// This local reference serves to register the plugin with the Flutter Engine and unregister it
+    /// when the Flutter Engine is detached from the Activity
+    private lateinit var channel: MethodChannel
+
+    override fun onAttachedToEngine(@NonNull flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
+        channel = MethodChannel(flutterPluginBinding.binaryMessenger, "clx_listener_screen")
+        channel.setMethodCallHandler(this)
+        setupChannel(flutterPluginBinding.binaryMessenger, flutterPluginBinding.applicationContext)
     }
-  }
 
-  override fun onDetachedFromEngine(binding: FlutterPlugin.FlutterPluginBinding) {
-    channel.setMethodCallHandler(null)
-  }
+
+    override fun onMethodCall(@NonNull call: MethodCall, @NonNull result: Result) {
+        if (call.method == "startWebView") {
+
+            result.success("Android ${android.os.Build.VERSION.RELEASE}")
+        } else {
+            result.notImplemented()
+        }
+    }
+
+    override fun onDetachedFromEngine(@NonNull binding: FlutterPlugin.FlutterPluginBinding) {
+        channel.setMethodCallHandler(null)
+    }
+
+    private fun setupChannel(messenger: BinaryMessenger, context: Context) {
+        channel = MethodChannel(messenger,"clx_listener_screen")
+        channel.setMethodCallHandler { call, result ->
+            when (call.method) {
+                
+            }
+        }
+    }
 }