Fixed: Tailscale will not reconnect to the Tailscale network after using another VPN until Tailscale app is force closed because currentState=Ipn.State.Stopping on subsequent attempts to start TS

Signed-off-by: Segi <segihovav@gmail.com>

Author: SegiH

README.md

@@ -53,6 +53,8 @@ If you installed Android Studio the tools may not be in your path. To get the
 correct tool path, run `make androidpath` and export the provided path in your
 shell.
 
+You will also need to run `make llibtailscale` to build the Tailscale AAR which is required to build the Android app.
+
 #### Code Formatting
 
 The ktmft plugin on the default setting should be used to autoformat all Java, Kotlin

android/build.gradle

@@ -85,6 +85,7 @@ android {
             buildConfigField "String", "GITHUB_2FA_SECRET", "\"" + getLocalProperty("github2FASecret", "")+"\""
         }
         debug {
+		   applicationIdSuffix ".debug"
             manifestPlaceholders.leanbackRequired = false
         }
         release {

android/src/main/java/com/tailscale/ipn/ui/viewModel/MainViewModel.kt

@@ -210,6 +210,10 @@ class MainViewModel(private val appViewModel: AppViewModel) : IpnViewModel() {
         val currentState = Notifier.state.value
 
         if (desiredState) {
+		  if (currentState != Ipn.State.Stopped) {
+              stopVPN()
+          }
+
           // User wants to turn ON the VPN
           when {
             currentState != Ipn.State.Running -> startVPN()