[lb7] ItemActivity.kt

package com.example.lb7

import android.app.Activity
import android.content.Intent
import android.graphics.BitmapFactory
import android.location.Location
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.os.Environment
import android.provider.MediaStore
import android.view.Menu
import android.view.MenuItem
import android.view.View
import android.widget.EditText
import android.widget.ImageView
import androidx.core.content.FileProvider
import java.io.File

class ItemActivity : AppCompatActivity() {
    private var index = 0
    private lateinit var item: Item
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_item)

        val intent = intent
        index = intent?.getIntExtra("index", -1) ?: -1
        item = intent?.getParcelableExtra("item") ?: Item()
        val editTitle = findViewById<EditText>(R.id.title)
        editTitle.setText(item.title)
        val editLatitude = findViewById<EditText>(R.id.latitude)
        editLatitude.setText(item.latitude.toString())
        val editLongitude = findViewById<EditText>(R.id.longitude)
        editLongitude.setText(item.longitude.toString())

        supportActionBar?.setDisplayHomeAsUpEnabled(true)
    }
    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
        menuInflater.inflate(R.menu.add_item, menu)
        return super.onCreateOptionsMenu(menu)
    }
    override fun onOptionsItemSelected(item: MenuItem): Boolean {
        if (item.itemId == android.R.id.home) {
            finish()
            return true
        }
        if (item.itemId == R.id.action_save) {
            this.item.title = findViewById<EditText>(R.id.title).text.toString()
            this.item.latitude = findViewById<EditText>(R.id.latitude).text.toString().toDouble()
            this.item.longitude = findViewById<EditText>(R.id.longitude).text.toString().toDouble()
            val intent = Intent()
            intent.putExtra("index", index)
            intent.putExtra("item", this.item)
            setResult(Activity.RESULT_OK, intent)

            finish()
            return true
        }
        if (item.itemId == R.id.action_delete) {
            val intent = Intent()
            intent.putExtra("index", index)
            intent.putExtra("item", this.item)
            setResult(111 , intent)

            finish()
            return true
        }

        return super.onOptionsItemSelected(item)
    }


}