NoteDetailActivity.kt

package com.shellmonger.apps.mynotes.ui

import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import com.shellmonger.apps.mynotes.R
import com.shellmonger.apps.mynotes.extensions.set
import com.shellmonger.apps.mynotes.models.Note
import kotlinx.android.synthetic.main.activity_note_detail.*

/**
 * Handles the detail page of a note, allowing the user to edit it.
 */
class NoteDetailActivity : AppCompatActivity() {
    companion object {
        private val TAG = this::class.java.simpleName
    }

    /**
     * The current note
     */
    private val currentNote = Note().apply {
        title = "example title"
        content = "example content"
    }

    /**
     * Lifecycle event handler, called when the activity is first created.
     */
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_note_detail)
    }

    /**
     * Lifecycle event handler, called when the activity is resumed
     */
    override fun onResume() {
        super.onResume()
        loadNote()
    }

    /**
     * Lifecycle event handler, called when the activity is paused
     */
    override fun onPause() {
        super.onPause()
        saveNote()
    }

    private fun loadNote() {
        Log.d(TAG, "Note is being loaded")

        // Load the note

        // Fill in the details from the note
        detail_id_field.text = currentNote.noteId
        detail_title_editor.text.set(currentNote.title)
        detail_content_editor.text.set(currentNote.content)
    }

    private fun saveNote() {
        Log.d(TAG, "Note is being saved")

        // Store the details back into the note
        currentNote.title = detail_title_editor.text.toString()
        currentNote.content = detail_content_editor.text.toString()

        // Save the note
    }
}