Improved saving of call uri when main activity is paused

app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt

@@ -68,6 +68,11 @@ class MainActivity : AppCompatActivity() {
     private var restart = false
     private var atStartup = false
 
+    private var resumeUri = ""
+    private var resumeUap = ""
+    private var resumeCall: Call? = null
+    private var resumeAction = ""
+
     @SuppressLint("ClickableViewAccessibility")
     override fun onCreate(savedInstanceState: Bundle?) {
 
@@ -255,7 +260,7 @@ class MainActivity : AppCompatActivity() {
             val aor = ua.account.aor
             if (Call.calls().isEmpty()) {
                 val uriText = callUri.text.toString().trim()
-                if (uriText.length > 0) {
+                if (uriText.isNotEmpty()) {
                     var uri = ContactsActivity.findContactURI(uriText)
                     if (!uri.startsWith("sip:")) {
                         uri = "sip:$uri"
@@ -271,17 +276,17 @@ class MainActivity : AppCompatActivity() {
                         callUri.isFocusable = false
                         if (am.mode != AudioManager.MODE_IN_COMMUNICATION)
                             am.mode = AudioManager.MODE_IN_COMMUNICATION
-                        callButton.visibility = View.INVISIBLE
-                        callButton.isEnabled = false
-                        hangupButton.visibility = View.VISIBLE
-                        hangupButton.isEnabled = false
-                        hangupButton.isEnabled = true
                         if (!call(ua, uri, "outgoing")) {
                             am.mode = AudioManager.MODE_NORMAL
                             callButton.visibility = View.VISIBLE
                             callButton.isEnabled = true
                             hangupButton.visibility = View.INVISIBLE
                             hangupButton.isEnabled = false
+                        } else {
+                            callButton.visibility = View.INVISIBLE
+                            callButton.isEnabled = false
+                            hangupButton.visibility = View.VISIBLE
+                            hangupButton.isEnabled = true
                         }
                     }
                 } else {
@@ -674,8 +679,7 @@ class MainActivity : AppCompatActivity() {
         Log.d("Baresip", "Main onPause")
         Utils.addActivity("main")
         visible = false
-        if (UserAgent.uas().isNotEmpty() && aorSpinner.selectedItemPosition >= 0)
+        saveCallUri()
-            UserAgent.uas()[aorSpinner.selectedItemPosition].account.resumeUri = callUri.text.toString()
         super.onPause()
     }
 
@@ -1715,6 +1719,16 @@ class MainActivity : AppCompatActivity() {
         return
     }
 
+    private fun saveCallUri() {
+        if (UserAgent.uas().isNotEmpty() && aorSpinner.selectedItemPosition >= 0) {
+            val ua = UserAgent.uas()[aorSpinner.selectedItemPosition]
+            if (Call.uaCalls(ua, "").size == 0)
+                ua.account.resumeUri = callUri.text.toString()
+            else
+                ua.account.resumeUri = ""
+        }
+    }
+
     @Suppress("DEPRECATION")
     private fun dismissKeyguard() {
         if (Build.VERSION.SDK_INT >= 27) {
@@ -1731,11 +1745,6 @@ class MainActivity : AppCompatActivity() {
     companion object {
 
         var visible = false
-
-        var resumeAction = ""
-        var resumeUap = ""
-        var resumeCall: Call? = null
-        var resumeUri = ""
         var activityAor = ""
 
         // <aor, password> of those accounts that have auth username without auth password