Add option to view Tutorial again

Another button in the 'Launcher' Tab of settings. I made sure this does 
not reset any user preferences. It just plays the tutorial and returns 
to settings.

app/src/main/java/com/finnmglas/launcher/FirstStartupActivity.kt

@@ -17,6 +17,7 @@ class FirstStartupActivity : AppCompatActivity(){
 
     private var menuNumber = 0
     private var defaultApps = mutableListOf<String>()
+    private var isFirstTime = false
 
     /** Activity Lifecycle functions */
 
@@ -36,7 +37,11 @@ class FirstStartupActivity : AppCompatActivity(){
         loadMenu(this)
 
         val sharedPref = this.getSharedPreferences(getString(R.string.preference_file_key), Context.MODE_PRIVATE)
-        defaultApps = resetSettings(sharedPref, this) // UP, DOWN, RIGHT, LEFT, VOLUME_UP, VOLUME_DOWN
+
+        isFirstTime = !sharedPref.getBoolean("startedBefore", false)
+
+        if (isFirstTime)
+            defaultApps = resetSettings(sharedPref, this) // UP, DOWN, RIGHT, LEFT, VOLUME_UP, VOLUME_DOWN
     }
 
     /** Touch- and Key-related functions to navigate */
@@ -72,19 +77,23 @@ class FirstStartupActivity : AppCompatActivity(){
             val entry = intro[menuNumber].split("|").toTypedArray() //heading|infoText|hintText|size
 
             heading.text = entry[0]
-            if (entry[4] == "1")infoText.text = String.format(entry[1],
+            if (entry[4] == "1" && isFirstTime)infoText.text = String.format(entry[1],
                 defaultApps[0], defaultApps[1], defaultApps[2], defaultApps[3], defaultApps[4], defaultApps[5])
+            else if (entry[4] == "1" && !isFirstTime)infoText.text = String.format(entry[1],
+                "-", "-", "-", "-", "-", "-")
             else infoText.text = entry[1]
             hintText.text = entry[2]
             infoText.setTextSize(TypedValue.COMPLEX_UNIT_SP, entry[3].toFloat())
 
         } else { // End intro
-            val sharedPref = this.getSharedPreferences(getString(R.string.preference_file_key), Context.MODE_PRIVATE)
+            if (isFirstTime){
+                val sharedPref = this.getSharedPreferences(getString(R.string.preference_file_key), Context.MODE_PRIVATE)
 
-            val editor: SharedPreferences.Editor = sharedPref.edit()
-            editor.putBoolean("startedBefore", true) // never run this again
-            editor.putLong("firstStartup", System.currentTimeMillis() / 1000L) // record first startup timestamp
-            editor.apply()
+                val editor: SharedPreferences.Editor = sharedPref.edit()
+                editor.putBoolean("startedBefore", true) // never auto run this again
+                editor.putLong("firstStartup", System.currentTimeMillis() / 1000L) // record first startup timestamp
+                editor.apply()
+            }
 
             finish()
         }

app/src/main/java/com/finnmglas/launcher/SettingsActivity.kt

@@ -83,8 +83,9 @@ class SettingsActivity : AppCompatActivity() {
     fun openFinnWebsite(view: View) { openNewTabWindow(getString(R.string.settings_footer_web), this) }
     fun openGithubRepo(view: View) { openNewTabWindow(getString(R.string.settings_footer_repo), this) }
 
-    // Just copied code from https://stackoverflow.com/q/10816757/12787264
-    //  that is how we write good software ^
+    // Rate App
+    //  Just copied code from https://stackoverflow.com/q/10816757/12787264
+    //   that is how we write good software ^
     fun rateApp(view: View) {
         try {
             val rateIntent = rateIntentForUrl("market://details")
@@ -138,6 +139,10 @@ class SettingsActivity : AppCompatActivity() {
         }
     }
 
+    fun viewTutorial (view: View){
+        startActivity(Intent(this, FirstStartupActivity::class.java))
+    }
+
     // Show a dialog prompting for confirmation
     fun resetSettingsClick(view: View) {
         AlertDialog.Builder(this)

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

@@ -19,6 +19,14 @@
         android:text="@string/settings_select_launcher"
         android:textAllCaps="false" />
 
+    <Button
+        style="@style/Widget.AppCompat.Button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:onClick="viewTutorial"
+        android:text="@string/settings_show_tutorial"
+        android:textAllCaps="false" />
+
     <Button
         style="@style/Widget.AppCompat.Button"
         android:layout_width="match_parent"

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

@@ -23,6 +23,7 @@
     <string name="settings_tab_launcher" translatable="false">Launcher</string>
 
     <string name="settings_feedback" translatable="false">Give some feedback</string>
+    <string name="settings_show_tutorial" translatable="false">View Launcher Tutorial</string>
 
     <string name="settings_choose_up">Swipe Up</string>
     <string name="settings_choose_down">Swipe Down</string>