MainActivity: add new theme picking with new sound

app/src/main/java/io/lowrespalmtree/harvestdawn/MainActivity.kt

@@ -2,7 +2,10 @@ package io.lowrespalmtree.harvestdawn
 
 import android.Manifest
 import android.app.Activity
+import android.app.AlertDialog
 import android.content.ContentValues
+import android.content.Context
+import android.content.DialogInterface
 import android.content.Intent
 import android.content.pm.PackageManager
 import android.net.Uri
@@ -81,15 +84,10 @@ class MainActivity : AppCompatActivity() {
         // automatically handle clicks on the Home/Up button, so long
         // as you specify a parent activity in AndroidManifest.xml.
         return when (item.itemId) {
-            R.id.action_share -> {
-                share(); true
-            }
-            R.id.action_save -> {
-                save(); true
-            }
-            R.id.action_clear_cache -> {
-                clearVideoCache(); true
-            }
+            R.id.action_share -> { share(); true }
+            R.id.action_save -> { save(); true }
+            R.id.action_clear_cache -> { clearVideoCache(); true }
+            R.id.action_pick_theme -> { showThemeDialog(); true }
             else -> super.onOptionsItemSelected(item)
         }
     }
@@ -185,9 +183,10 @@ class MainActivity : AppCompatActivity() {
 
         // Save the soundtrack as well cause we can't pass a resource to FFMPEG.
         // Should be done only once, then it's kept in app internal storage.
-        val soundFile = File(filesDir, "harvestdawn.m4a")
+        val themeId = getThemeRawResource(getThemeId())
+        val soundFile = File(filesDir, "$themeId.m4a")
         if (!soundFile.exists()) {
-            resources.openRawResource(R.raw.harvestdawn).use { resource ->
+            resources.openRawResource(themeId).use { resource ->
                 FileOutputStream(soundFile).use { fos ->
                     fos.buffered().write(resource.buffered().readBytes())
                 }
@@ -346,6 +345,38 @@ class MainActivity : AppCompatActivity() {
         startActivity(Intent.createChooser(shareIntent, getString(R.string.send)))
     }
 
+    private fun getThemeId() =
+        getSharedPreferences("app", Context.MODE_PRIVATE).getInt("theme", 0)
+
+    private fun setThemeId(id: Int) =
+        getSharedPreferences("app", Context.MODE_PRIVATE).edit().apply {
+            putInt("theme", id)
+            apply()
+        }
+
+    private fun getThemeRawResource(id: Int) =
+        when (id) {
+            0 -> R.raw.harvestdawn
+            1 -> R.raw.sunriseofflutes
+            else -> R.raw.harvestdawn
+        }
+
+    private fun showThemeDialog() {
+        val currentId = getThemeId()
+        val dialog = AlertDialog.Builder(this).run {
+            var selection = currentId
+            setTitle(R.string.action_theme)
+            setSingleChoiceItems(R.array.pick_theme, currentId) { _, which -> selection = which }
+            setPositiveButton(android.R.string.ok) { dialog, _ ->
+                setThemeId(selection)
+                dialog.dismiss()
+            }
+            setNegativeButton(android.R.string.cancel) { dialog, _ -> dialog.dismiss() }
+            create()
+        }
+        dialog.show()
+    }
+
     private fun toast(text: String) {
         Toast.makeText(this, text, Toast.LENGTH_SHORT).show()
     }

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

@@ -2,6 +2,11 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     tools:context="io.lowrespalmtree.harvestdawn.MainActivity">
+    <item
+        android:id="@+id/action_pick_theme"
+        android:orderInCategory="100"
+        android:title="@string/action_theme"
+        app:showAsAction="never" />
     <item
         android:id="@+id/action_save"
         android:orderInCategory="100"

app/src/main/res/values/arrays.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string-array name="pick_theme">
+        <item>@string/theme_harvestdawn</item>
+        <item>@string/theme_sunriseofflutes</item>
+    </string-array>
+</resources>

app/src/main/res/values/strings.xml

@@ -7,4 +7,7 @@
     <string name="send">Share</string>
     <string name="action_save">Save</string>
     <string name="action_clear_cache">Clear cache</string>
+    <string name="action_theme">Theme</string>
+    <string name="theme_harvestdawn">Harvest Dawn</string>
+    <string name="theme_sunriseofflutes">Sunrise of Flutes</string>
 </resources>