Fixes default values and adds explanation message for permission request

app/src/main/java/org/esiliati/repo/pico-streaming/app/MainActivity.kt

@@ -45,7 +45,7 @@ class MainActivity : AppCompatActivity() {
             // Explain why we need permissions
             showDialog(
                 title = "Permissions denied",
-                message = "Explain why you need to grant $permissions permissions to stream",
+                message = getString(R.string.message),
                 positiveButtonText = R.string.accept,
                 onPositiveButtonClick = { onRequiredPermissionLastTime() },
                 negativeButtonText = R.string.denied

app/src/main/java/org/esiliati/repo/pico-streaming/app/SettingsActivity.kt

@@ -11,7 +11,7 @@ class SettingsActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        PreferenceManager.setDefaultValues(this, R.xml.root_preferences, false);
+        //PreferenceManager.setDefaultValues(this, R.xml.root_preferences, false);
         setContentView(R.layout.settings_activity)
         if (savedInstanceState == null) {
             supportFragmentManager
@@ -39,4 +39,4 @@ class SettingsActivity : AppCompatActivity() {
         fun getBitrate(context: Context): String =
             PreferenceManager.getDefaultSharedPreferences(context).getString("pref_bitrate", "") ?: ""
     }
-}
+}

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

@@ -2,10 +2,11 @@
     <string name="app_name">Pico Streaming App</string>
     <string name="denied">Denied</string>
     <string name="accept">Accept</string>
+    <string name="message">Video and Audio permissions are required to stream from main camera and microphone.</string>
     <string name="title_activity_settings">Settings</string>
 
     <!-- Preference Titles -->
-    <string name="messages_header">Server</string>
+    <string name="messages_header">Connection</string>
     <string name="sync_header">Sync</string>
 
 </resources>

app/src/main/res/xml/root_preferences.xml

@@ -4,7 +4,7 @@
 
         <EditTextPreference
             app:key="pref_server"
-            app:title="Server"
+            app:title="Stream URL"
             app:summary="srt://host:port or rtsp://..."
             app:useSimpleSummaryProvider="true"
             app:defaultValue=""/>
@@ -30,4 +30,4 @@
             app:defaultValue="@array/default_bitrate"/>
     </PreferenceCategory>
 
-</PreferenceScreen>
+</PreferenceScreen>