Improve rigctl icon visibility

Author: sh123

codec2talkie/src/main/java/com/radio/codec2talkie/MainActivity.java

@@ -110,6 +110,7 @@ public class MainActivity extends AppCompatActivity implements ServiceConnection
     private boolean _isConnecting = false;
     private boolean _isAppExit = false;
     private boolean _isAppRestart = false;
+    private boolean _isRigCtlUsbConnected = false;
 
     private long _backPressedTimestamp;
 
@@ -290,6 +291,7 @@ private void startTransportConnection() {
             int resultCode = result.getResultCode();
             String transportType = _sharedPreferences.getString(PreferenceKeys.PORTS_TYPE, "loopback");
             if (transportType.equals("sound_modem")) {
+                _isRigCtlUsbConnected = resultCode == RESULT_OK;
                 startAppService(TransportFactory.TransportType.SOUND_MODEM);
             } else if (resultCode == RESULT_CANCELED) {
                 _textConnInfo.setText(R.string.main_status_loopback_test);
@@ -303,6 +305,7 @@ private void startTransportConnection() {
 
     protected void startUsbConnectActivity() {
         _isConnecting = true;
+        _isRigCtlUsbConnected = false;
         _usbActivityLauncher.launch(new Intent(this, UsbConnectActivity.class));
     }
 
@@ -465,7 +468,7 @@ private void updateStatusText(ProtocolFactory.ProtocolType protocolType) {
 
         // rig CAT control
         String rigName = _sharedPreferences.getString(PreferenceKeys.PORTS_SOUND_MODEM_RIG, "Disabled");
-        if (!rigName.equals("Disabled") && UsbPortHandler.getPort() != null) {
+        if (!rigName.equals("Disabled") && _isRigCtlUsbConnected) {
             status += getString(R.string.ports_sound_modem_rig_label);
         }