flutter调用用kotlin编写的检查是否已经有App桌面快捷方式代码和自动生成APP桌面快捷方式代码按照以上要求请提供完整代码以及导入包

以下是Flutter调用Kotlin编写的检查是否已经有App桌面快捷方式代码和自动生成APP桌面快捷方式代码的示例代码：

首先，需要在Flutter项目中使用platform channel来调用Kotlin代码。在lib/main.dart文件中添加以下代码：

import 'package:flutter/services.dart';

final MethodChannel platform = MethodChannel('shortcut_channel');

Future<bool> isShortcutExist() async {
  try {
    final bool isExist = await platform.invokeMethod('isShortcutExist');
    return isExist;
  } on PlatformException catch (e) {
    print(e.message);
    return false;
  }
}

Future<bool> createShortcut() async {
  try {
    final bool isSuccess = await platform.invokeMethod('createShortcut');
    return isSuccess;
  } on PlatformException catch (e) {
    print(e.message);
    return false;
  }
}

在Kotlin代码中，需要实现isShortcutExist和createShortcut方法，并在MainActivity中注册platform channel。

在app/src/main/kotlin/com/example/myapp/MainActivity.kt文件中添加以下代码：

import android.content.Intent
import android.content.pm.PackageManager
import android.os.Build
import androidx.annotation.NonNull
import io.flutter.embedding.android.FlutterActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugin.common.MethodCall
import io.flutter.plugin.common.MethodChannel
import io.flutter.plugins.GeneratedPluginRegistrant

class MainActivity: FlutterActivity() {

    private val CHANNEL = "shortcut_channel"

    override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
        GeneratedPluginRegistrant.registerWith(flutterEngine)
        MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL).setMethodCallHandler {
            call, result ->
            when (call.method) {
                "isShortcutExist" -> {
                    val shortcutIntent = Intent(Intent.ACTION_MAIN)
                    shortcutIntent.setClassName(this, MainActivity::class.java.name)
                    shortcutIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
                    val isExist = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                        packageManager.shortcutManager.dynamicShortcuts.any {
                            it.intent?.component?.className == shortcutIntent.component?.className
                        }
                    } else {
                        false
                    }
                    result.success(isExist)
                }
                "createShortcut" -> {
                    val shortcutIntent = Intent(Intent.ACTION_MAIN)
                    shortcutIntent.setClassName(this, MainActivity::class.java.name)
                    shortcutIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
                    val shortcut = Intent.ShortcutIconResource.fromContext(this, R.mipmap.ic_launcher)
                    val dynamicShortcut = Intent(Intent.ACTION_CREATE_SHORTCUT).apply {
                        putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent)
                        putExtra(Intent.EXTRA_SHORTCUT_NAME, getString(R.string.app_name))
                        putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcut)
                    }
                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                        packageManager.shortcutManager.requestPinShortcut(dynamicShortcut, null)
                    } else {
                        val addIntent = Intent()
                        addIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent)
                        addIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, getString(R.string.app_name))
                        addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcut)
                        addIntent.action = "com.android.launcher.action.INSTALL_SHORTCUT"
                        sendBroadcast(addIntent)
                    }
                    result.success(true)
                }
                else -> {
                    result.notImplemented()
                }
            }
        }
    }
}

需要导入以下包：

import android.content.Intent
import android.content.pm.PackageManager
import android.os.Build
import androidx.annotation.NonNull
import io.flutter.embedding.android.FlutterActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugin.common.MethodCall
import io.flutter.plugin.common.MethodChannel
import io.flutter.plugins.GeneratedPluginRegistrant
``