用android studio（Kotlin版）编写下列想法的代码：1. 首先，需要创建一个日历视图。您可以使用Android系统提供的CalendarView控件或者自己编写一个日历视图。 2. 接下来，需要实现可标注特殊日期的功能。您可以定义一个数据结构来存储特殊日期的信息，比如日期、标注内容等。在日历视图中，您可以根据这些信息来在对应的日期上显示标注。 3. 当用户点击标注日期时，需要展示相关的意见。您可以使用一个Dialog或者Activity来展示相关的信息。您可以根据标注内容来自定义Dialog或者Activity的布局，以展示更加丰富的信息。 4. 最后，需要实现添加、编辑和删除特殊日期的功能。用户可以通过一个按钮或者菜单来进入相关的操作界面，然后根据界面提示来完成相关操作。在编辑和删除特殊日期时，需要先选中对应的日期，然后进行相关操作。，详细写出步骤，以及KT和xml文件的全部代码

步骤：
1. 创建一个新的Android Studio项目，选择Kotlin语言和Empty Activity模板。
2. 在app/build.gradle文件中添加以下依赖：

implementation 'com.google.android.material:material:1.4.0'
implementation 'androidx.recyclerview:recyclerview:1.2.1'

3. 在res/layout目录下创建一个名为activity_main.xml的布局文件，并在其中添加以下内容：

<?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"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
 
    <CalendarView
        android:id="@+id/calendarView"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_margin="16dp"
        app:layout_constraintBottom_toTopOf="@+id/buttonsLayout"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
 
    <LinearLayout
        android:id="@+id/buttonsLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent">
 
        <Button
            android:id="@+id/addButton"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Add" />
 
        <Button
            android:id="@+id/editButton"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Edit" />
 
        <Button
            android:id="@+id/deleteButton"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Delete" />
    </LinearLayout>
 
</androidx.constraintlayout.widget.ConstraintLayout>

4. 在MainActivity.kt文件中添加以下代码：

import android.os.Bundle
import android.widget.CalendarView
import androidx.appcompat.app.AlertDialog
import androidx.appcompat.app.AppCompatActivity
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
 
class MainActivity : AppCompatActivity() {
 
    private lateinit var calendarView: CalendarView
    private lateinit var addButton: Button
    private lateinit var editButton: Button
    private lateinit var deleteButton: Button
    private lateinit var recyclerView: RecyclerView
    private lateinit var adapter: CalendarAdapter
 
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
 
        calendarView = findViewById(R.id.calendarView)
        addButton = findViewById(R.id.addButton)
        editButton = findViewById(R.id.editButton)
        deleteButton = findViewById(R.id.deleteButton)
        recyclerView = findViewById(R.id.recyclerView)
 
        adapter = CalendarAdapter(mutableListOf())
        recyclerView.adapter = adapter
        recyclerView.layoutManager = LinearLayoutManager(this)
 
        calendarView.setOnDateChangeListener { view, year, month, dayOfMonth ->
            val date = "$year-${month + 1}-$dayOfMonth"
            val events = adapter.getEvents(date)
            if (events.isNotEmpty()) {
                val event = events.first()
                showEventDialog(event)
            }
        }
 
        addButton.setOnClickListener {
            showEventDialog(null)
        }
 
        editButton.setOnClickListener {
            val selectedDate = getDateFromCalendarView()
            if (selectedDate != null) {
                val events = adapter.getEvents(selectedDate)
                if (events.isNotEmpty()) {
                    showEventDialog(events.first())
                }
            }
        }
 
        deleteButton.setOnClickListener {
            val selectedDate = getDateFromCalendarView()
            if (selectedDate != null) {
                val events = adapter.getEvents(selectedDate)
                if (events.isNotEmpty()) {
                    adapter.deleteEvent(events.first())
                }
            }
        }
    }
 
    private fun getDateFromCalendarView(): String? {
        val selectedDate = calendarView.date
        val calendar = Calendar.getInstance()
        calendar.timeInMillis = selectedDate
        val year = calendar.get(Calendar.YEAR)
        val month = calendar.get(Calendar.MONTH) + 1
        val dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH)
        return "$year-$month-$dayOfMonth"
    }
 
    private fun showEventDialog(event: Event?) {
        val builder = AlertDialog.Builder(this)
        builder.setTitle("Add Event")
        val view = layoutInflater.inflate(R.layout.dialog_event, null)
        builder.setView(view)
        val dateEditText = view.findViewById<EditText>(R.id.dateEditText)
        val contentEditText = view.findViewById<EditText>(R.id.contentEditText)
        if (event != null) {
            builder.setTitle("Edit Event")
            dateEditText.setText(event.date)
            contentEditText.setText(event.content)
        } else {
            dateEditText.setText(getDateFromCalendarView())
        }
        builder.setPositiveButton("Save") { _, _ ->
            val date = dateEditText.text.toString()
            val content = contentEditText.text.toString()
            if (event != null) {
                adapter.updateEvent(event.copy(date = date, content = content))
            } else {
                adapter.addEvent(Event(date = date, content = content))
            }
        }
        builder.setNegativeButton("Cancel") { dialog, _ ->
            dialog.cancel()
        }
        builder.show()
    }
}
 
data class Event(
    val date: String,
    val content: String
)
 
class CalendarAdapter(private val events: MutableList<Event>) : RecyclerView.Adapter<EventViewHolder>() {
 
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): EventViewHolder {
        val view = LayoutInflater.from(parent.context).inflate(R.layout.item_event, parent, false)
        return EventViewHolder(view)
    }
 
    override fun onBindViewHolder(holder: EventViewHolder, position: Int) {
        holder.bind(events[position])
    }
 
    override fun getItemCount(): Int {
        return events.size
    }
 
    fun getEvents(date: String): List<Event> {
        return events.filter { it.date == date }
    }
 
    fun addEvent(event: Event) {
        events.add(event)
        notifyItemInserted(events.size - 1)
    }
 
    fun updateEvent(event: Event) {
        val index = events.indexOfFirst { it.date == event.date }
        events[index] = event
        notifyItemChanged(index)
    }
 
    fun deleteEvent(event: Event) {
        val index = events.indexOfFirst { it.date == event.date }
        events.removeAt(index)
        notifyItemRemoved(index)
    }
}
 
class EventViewHolder(view: View) : RecyclerView.ViewHolder(view) {
 
    private val dateTextView: TextView = itemView.findViewById(R.id.dateTextView)
    private val contentTextView: TextView = itemView.findViewById(R.id.contentTextView)
 
    fun bind(event: Event) {
        dateTextView.text = event.date
        contentTextView.text = event.content
    }
}

5. 在res/layout目录下创建一个名为item_event.xml的布局文件，并在其中添加以下内容：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:padding="16dp">
 
    <TextView
        android:id="@+id/dateTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@android:color/black"
        android:textSize="16sp" />
 
    <TextView
        android:id="@+id/contentTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@android:color/black"
        android:textSize="16sp" />
 
</LinearLayout>

6. 在res/layout目录下创建一个名为dialog_event.xml的布局文件，并在其中添加以下内容：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:padding="16dp">
 
    <EditText
        android:id="@+id/dateEditText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Date" />
 
    <EditText
        android:id="@+id/contentEditText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Content" />
 
</LinearLayout>

这样就完成了一个简单的可添加、编辑和删除标注日期的日历应用。