convenience saving of url/token to device

@@ -45,7 +45,7 @@ ext {
     ]
     versions = [
             androidx_core     : "1.2.0",
-            androidx_lifecycle: "2.3.0",
+            androidx_lifecycle: "2.3.1",
             dagger            : "2.27",
             groupie           : "2.9.0",
             protobuf          : "3.15.1",

@@ -39,9 +39,10 @@ dependencies {
     implementation 'com.google.android.material:material:1.3.0'
     implementation 'androidx.appcompat:appcompat:1.2.0'
     implementation 'androidx.core:core-ktx:1.3.2'
-    implementation "androidx.activity:activity-ktx:1.2.1"
-    implementation 'androidx.fragment:fragment-ktx:1.3.1'
-    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.0'
+    implementation "androidx.activity:activity-ktx:1.2.2"
+    implementation 'androidx.fragment:fragment-ktx:1.3.2'
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1'
+    implementation 'androidx.preference:preference:1.1.1'
     implementation "androidx.viewpager2:viewpager2:1.0.0"
     implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:${versions.androidx_lifecycle}"
     implementation "androidx.lifecycle:lifecycle-common-java8:${versions.androidx_lifecycle}"

@@ -9,17 +9,24 @@ import android.widget.Toast
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
+import androidx.core.content.edit
+import androidx.preference.PreferenceManager
 import io.livekit.android.sample.databinding.MainActivityBinding
 
 
 class MainActivity : AppCompatActivity() {
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
         val binding = MainActivityBinding.inflate(layoutInflater)
+
+        val preferences = PreferenceManager.getDefaultSharedPreferences(this)
+        val urlString = preferences.getString(PREFERENCES_KEY_URL, URL)
+        val tokenString = preferences.getString(PREFERENCES_KEY_TOKEN, TOKEN)
         binding.run {
-            url.editText?.text = URL
-            token.editText?.text = TOKEN
+            url.editText?.text = SpannableStringBuilder(urlString)
+            token.editText?.text = SpannableStringBuilder(tokenString)
             connectButton.setOnClickListener {
                 val intent = Intent(this@MainActivity, CallActivity::class.java).apply {
                     putExtra(
@@ -33,6 +40,33 @@ class MainActivity : AppCompatActivity() {
 
                 startActivity(intent)
             }
+
+            saveButton.setOnClickListener {
+                preferences.edit {
+                    putString(PREFERENCES_KEY_URL, url.editText?.text.toString())
+                    putString(PREFERENCES_KEY_TOKEN, token.editText?.text.toString())
+                }
+
+                Toast.makeText(
+                    this@MainActivity,
+                    "Values saved.",
+                    Toast.LENGTH_SHORT
+                ).show()
+            }
+
+            resetButton.setOnClickListener {
+                preferences.edit {
+                    clear()
+                }
+                url.editText?.text = SpannableStringBuilder(URL)
+                token.editText?.text = SpannableStringBuilder(TOKEN)
+
+                Toast.makeText(
+                    this@MainActivity,
+                    "Values reset.",
+                    Toast.LENGTH_SHORT
+                ).show()
+            }
         }
 
         setContentView(binding.root)
@@ -71,8 +105,11 @@ class MainActivity : AppCompatActivity() {
     }
 
     companion object {
-        val URL = SpannableStringBuilder("ws://192.168.91.198:7880")
-        val TOKEN =
-            SpannableStringBuilder("eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE2MTgyMDg0NTAsImlzcyI6IkFQSU1teGlMOHJxdUt6dFpFb1pKVjlGYiIsImp0aSI6ImZvcnRoIiwibmJmIjoxNjE1NjE2NDUwLCJ2aWRlbyI6eyJyb29tIjoibXlyb29tIiwicm9vbUpvaW4iOnRydWV9fQ.nu-fOZA-TPFvzleyXk2Zz9b5lFApCXV1npUAexttXQA")
+        const val PREFERENCES_KEY_URL = "url"
+        const val PREFERENCES_KEY_TOKEN = "token"
+
+        const val URL = "ws://192.168.11.5:7880"
+        const val TOKEN =
+            "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE2MTk0NDkwNTMsImlzcyI6IkFQSXdMZWFoN2c0ZnVMWURZQUplYUtzU0UiLCJqdGkiOiJwaG9uZTIiLCJuYmYiOjE2MTY4NTcwNTMsInZpZGVvIjp7InJvb20iOiJteXJvb20iLCJyb29tSm9pbiI6dHJ1ZX19.OiemzgYXe5269q_VDXb912LG3QoqoKy-52-xEWcTr3A"
     }
 }
\ No newline at end of file

@@ -32,6 +32,18 @@
         android:id="@+id/connect_button"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="@string/connect"/>
+        android:text="@string/connect" />
+
+    <Button
+        android:id="@+id/save_button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/save_values" />
+
+    <Button
+        android:id="@+id/reset_button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/reset_values" />
 
 </LinearLayout>
\ No newline at end of file

@@ -3,4 +3,6 @@
     <string name="connect">Connect</string>
     <string name="token">Token</string>
     <string name="url">URL</string>
+    <string name="save_values">Save Values</string>
+    <string name="reset_values">Reset Values</string>
 </resources>