Update UI: a concept for launching icon

V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainActivity.kt

@@ -131,11 +131,17 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
         mainViewModel.isRunning.observe(this) { isRunning ->
             adapter.isRunning = isRunning
             if (isRunning) {
-                binding.fab.backgroundTintList = ColorStateList.valueOf(ContextCompat.getColor(this, R.color.colorSelected))
+                if (!Utils.getDarkModeStatus(this)) {
+                    binding.fab.setImageResource(R.drawable.ic_stat_name)
+                }
+                binding.fab.backgroundTintList = ColorStateList.valueOf(ContextCompat.getColor(this, R.color.color_fab_orange))
                 setTestState(getString(R.string.connection_connected))
                 binding.layoutTest.isFocusable = true
             } else {
-                binding.fab.backgroundTintList = ColorStateList.valueOf(ContextCompat.getColor(this, R.color.colorUnselected))
+                if (!Utils.getDarkModeStatus(this)) {
+                    binding.fab.setImageResource(R.drawable.ic_stat_name_black)
+                }
+                binding.fab.backgroundTintList = ColorStateList.valueOf(ContextCompat.getColor(this, R.color.color_fab_grey))
                 setTestState(getString(R.string.connection_not_connected))
                 binding.layoutTest.isFocusable = false
             }