fix #133, add an option to disable autosave

app/src/main/kotlin/com/simplemobiletools/notes/activities/MainActivity.kt

@@ -111,6 +111,7 @@ class MainActivity : SimpleActivity(), ViewPager.OnPageChangeListener {
             findItem(R.id.open_note).isVisible = shouldBeVisible
             findItem(R.id.delete_note).isVisible = shouldBeVisible
             findItem(R.id.export_all_notes).isVisible = shouldBeVisible
+            findItem(R.id.save_note).isVisible = !config.autosaveNotes
         }
 
         pager_title_strip.beVisibleIf(shouldBeVisible)
@@ -118,9 +119,13 @@ class MainActivity : SimpleActivity(), ViewPager.OnPageChangeListener {
     }
 
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
-        saveCurrentNote()
+        if (config.autosaveNotes) {
+            saveCurrentNote()
+        }
+
         when (item.itemId) {
             R.id.open_note -> displayOpenNoteDialog()
+            R.id.save_note -> saveNote()
             R.id.new_note -> displayNewNoteDialog()
             R.id.rename_note -> displayRenameDialog()
             R.id.share -> shareText()
@@ -461,6 +466,10 @@ class MainActivity : SimpleActivity(), ViewPager.OnPageChangeListener {
         }
     }
 
+    private fun saveNote() {
+        saveCurrentNote()
+    }
+
     private fun getNoteIndexWithId(id: Int): Int {
         for (i in 0 until mNotes.count()) {
             if (mNotes[i].id == id) {

app/src/main/kotlin/com/simplemobiletools/notes/activities/SettingsActivity.kt

@@ -33,6 +33,7 @@ class SettingsActivity : SimpleActivity() {
 
         setupCustomizeColors()
         setupUseEnglish()
+        setupAutosaveNotes()
         setupDisplaySuccess()
         setupClickableLinks()
         setupMonospacedFont()
@@ -62,6 +63,14 @@ class SettingsActivity : SimpleActivity() {
         }
     }
 
+    private fun setupAutosaveNotes() {
+        settings_autosave_notes.isChecked = config.autosaveNotes
+        settings_autosave_notes_holder.setOnClickListener {
+            settings_autosave_notes.toggle()
+            config.autosaveNotes = settings_autosave_notes.isChecked
+        }
+    }
+
     private fun setupDisplaySuccess() {
         settings_display_success.isChecked = config.displaySuccess
         settings_display_success_holder.setOnClickListener {

app/src/main/kotlin/com/simplemobiletools/notes/fragments/NoteFragment.kt

@@ -52,7 +52,7 @@ class NoteFragment : Fragment() {
 
     override fun setMenuVisibility(menuVisible: Boolean) {
         super.setMenuVisibility(menuVisible)
-        if (noteId != 0) {
+        if (noteId != 0 && context?.config?.autosaveNotes == true) {
             saveText()
         }
     }
@@ -134,7 +134,9 @@ class NoteFragment : Fragment() {
 
     override fun onPause() {
         super.onPause()
-        saveText()
+        if (context!!.config.autosaveNotes) {
+            saveText()
+        }
         view.notes_view.removeTextChangedListener(textWatcher)
     }
 

app/src/main/kotlin/com/simplemobiletools/notes/helpers/Config.kt

@@ -9,6 +9,10 @@ class Config(context: Context) : BaseConfig(context) {
         fun newInstance(context: Context) = Config(context)
     }
 
+    var autosaveNotes: Boolean
+        get() = prefs.getBoolean(AUTOSAVE_NOTES, true)
+        set(autosaveNotes) = prefs.edit().putBoolean(AUTOSAVE_NOTES, autosaveNotes).apply()
+
     var displaySuccess: Boolean
         get() = prefs.getBoolean(DISPLAY_SUCCESS, false)
         set(displaySuccess) = prefs.edit().putBoolean(DISPLAY_SUCCESS, displaySuccess).apply()

app/src/main/kotlin/com/simplemobiletools/notes/helpers/Constants.kt

@@ -5,6 +5,7 @@ const val OPEN_NOTE_ID = "open_note_id"
 
 // shared preferences
 const val CURRENT_NOTE_ID = "current_note_id"
+const val AUTOSAVE_NOTES = "autosave_notes"
 const val DISPLAY_SUCCESS = "display_success"
 const val CLICKABLE_LINKS = "clickable_links"
 const val WIDGET_NOTE_ID = "widget_note_id"

app/src/main/res/layout/activity_settings.xml

@@ -50,6 +50,26 @@
 
         </RelativeLayout>
 
+        <RelativeLayout
+            android:id="@+id/settings_autosave_notes_holder"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="@dimen/medium_margin"
+            android:background="?attr/selectableItemBackground"
+            android:padding="@dimen/activity_margin">
+
+            <com.simplemobiletools.commons.views.MySwitchCompat
+                android:id="@+id/settings_autosave_notes"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="@null"
+                android:clickable="false"
+                android:paddingLeft="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:text="@string/autosave_notes"/>
+
+        </RelativeLayout>
+
         <RelativeLayout
             android:id="@+id/settings_display_success_holder"
             android:layout_width="match_parent"

app/src/main/res/menu/menu.xml

@@ -1,6 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
       xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/save_note"
+        android:icon="@drawable/ic_save"
+        android:title="@string/save"
+        app:showAsAction="ifRoom"/>
     <item
         android:id="@+id/open_note"
         android:icon="@drawable/ic_open"