Adds Connect/Disconnect functionality.

ui/src/main/java/com/wireguard/android/activity/MainActivity.java

@@ -26,6 +26,7 @@ public class MainActivity extends AppCompatActivity {
     public ObservableTunnel pendingTunnel;
     private Boolean pendingTunnelUp;
     private boolean connectionStateFlag;
+    private ObservableTunnel tunnel ;
 
     private static final int REQUEST_CODE_VPN_PERMISSION = 23491;
 
@@ -42,8 +43,28 @@ public class MainActivity extends AppCompatActivity {
         }
         initUI();
         mainViewModel.buildRepositoryInstance(this,mainViewModel.getUserURL(this));
-        connectionStateFlag = mainViewModel.getConnectionState(this);
-        bubbleStatus.setText(mainViewModel.isBubbleConnected(this));
+        tunnel = mainViewModel.getTunnelManager().getLastUsedTunnel();
+        if(tunnel == null) {
+            tunnel = mainViewModel.getTunnel(this, connectionStateFlag);
+        }
+    }
+
+    @Override protected void onResume() {
+        super.onResume();
+        if(tunnel!=null){
+            if(tunnel.getState() == State.DOWN)
+            {
+                connectionStateFlag = false;
+                bubbleStatus.setText(getString(R.string.not_connected_bubble));
+                connectButton.setText(getString(R.string.connect));
+            }
+            else {
+                connectionStateFlag = true;
+                bubbleStatus.setText(getString(R.string.connected_bubble));
+                connectButton.setText(getString(R.string.disconnect));
+            }
+        }
+        pendingTunnel = tunnel;
     }
 
     private void initUI() {
@@ -65,8 +86,6 @@ public class MainActivity extends AppCompatActivity {
     }
 
     private void connect() {
-        ObservableTunnel tunnel = mainViewModel.getTunnel(this, connectionStateFlag);
-        pendingTunnel = tunnel;
         mainViewModel.getTunnelManager().getTunnelState(pendingTunnel).whenComplete((state, throwable) -> {
             if (state == State.DOWN) {
                 connectionStateFlag = true;
@@ -99,13 +118,15 @@ public class MainActivity extends AppCompatActivity {
     private void setTunnelStateWithPermissionsResult(final ObservableTunnel tunnel, final boolean checked) {
         tunnel.setStateAsync(Tunnel.State.of(checked)).whenComplete((observableTunnel, throwable) ->{
             if(throwable==null){
-                if(observableTunnel.equals(State.DOWN)) {
+                if(observableTunnel == State.DOWN) {
                     Toast.makeText(this, getString(R.string.not_connected_bubble), Toast.LENGTH_SHORT).show();
                     bubbleStatus.setText(getString(R.string.not_connected_bubble));
+                    connectButton.setText(getString(R.string.connect));
                 }
                 else  {
                     Toast.makeText(this, getString(R.string.connected_bubble), Toast.LENGTH_SHORT).show();
                     bubbleStatus.setText(getString(R.string.connected_bubble));
+                    connectButton.setText(getString(R.string.disconnect));
                 }
             }
             else {
@@ -122,9 +143,4 @@ public class MainActivity extends AppCompatActivity {
             pendingTunnelUp = null;
         }
     }
-
-    @Override protected void onDestroy() {
-        super.onDestroy();
-        mainViewModel.setConnectionState(this,connectionStateFlag,bubbleStatus.getText().toString());
-    }
 }

ui/src/main/java/com/wireguard/android/repository/DataRepository.java

@@ -341,19 +341,6 @@ public class DataRepository {
 
         return tunnel;
     }
-
-    public boolean getConnectionState(Context context){
-        return TunnelStore.getInstance(context).getConnectionState();
-    }
-
-    public String isBubbleConnected(Context context){
-        return TunnelStore.getInstance(context).isBubbleConnected();
-    }
-
-    public void setConnectionState(final Context context, final boolean state, final String stateConnection){
-        TunnelStore.getInstance(context).setConnectionState(state,stateConnection);
-    }
-
     public void setUserURL(Context context, String url){
         UserStore.getInstance(context).setUserURL(url);
     }

ui/src/main/java/com/wireguard/android/util/TunnelStore.java

@@ -10,10 +10,6 @@ public class TunnelStore {
     private static final String TUNNEL_SHARED_PREF = "com.wireguard.android.util.bubbleTunnelSharedPref";
     private static final String TUNNEL_DATA_KEY = "com.wireguard.android.util.bubbleResponse";
     private static final String CONFIG_DATA_KEY = "com.wireguard.android.util.bubbleConfigResponse";
-    private static final String CONNECTION_STATE_KEY = "com.wireguard.android.util.connectionStateResponse";
-    private static final String CONNECTION_STATE_STRING_KEY = "com.wireguard.android.util.connectionStateStringResponse";
-    private static final boolean CONNECTION_STATE_DEFAULT_VALUE = false;
-    private static final String CONNECTION_STATE_STRING_DEFAULT_VALUE = "Not Connected";
     public static final String TUNNEL_DEFAULT_VALUE = "";
     public static final String CONFIG_DEFAULT_VALUE = "";
 
@@ -45,17 +41,4 @@ public class TunnelStore {
     public String getConfig(){
         return sharedPreferences.getString(CONFIG_DATA_KEY,CONFIG_DEFAULT_VALUE);
     }
-
-    public void setConnectionState(final boolean state, final String stateConnection){
-        sharedPreferences.edit().putBoolean(CONNECTION_STATE_KEY,state).apply();
-        sharedPreferences.edit().putString(CONNECTION_STATE_STRING_KEY,stateConnection).apply();
-    }
-
-    public boolean getConnectionState(){
-        return sharedPreferences.getBoolean(CONNECTION_STATE_KEY,CONNECTION_STATE_DEFAULT_VALUE);
-    }
-
-    public String isBubbleConnected(){
-        return sharedPreferences.getString(CONNECTION_STATE_STRING_KEY,CONNECTION_STATE_STRING_DEFAULT_VALUE);
-    }
 }

ui/src/main/java/com/wireguard/android/viewmodel/MainViewModel.java

@@ -23,18 +23,6 @@ public class MainViewModel extends ViewModel {
         return DataRepository.getRepositoryInstance().getTunnelManager();
     }
 
-    public boolean getConnectionState(Context context){
-        return DataRepository.getRepositoryInstance().getConnectionState(context);
-    }
-
-    public String isBubbleConnected(Context context){
-        return DataRepository.getRepositoryInstance().isBubbleConnected(context);
-    }
-
-    public void setConnectionState(final Context context, final boolean state, final String stateConnection){
-        DataRepository.getRepositoryInstance().setConnectionState(context,state,stateConnection);
-    }
-
     public void buildRepositoryInstance(Context context, String url){
         DataRepository.buildRepositoryInstance(context,url);
     }

ui/src/main/res/values/strings.xml

@@ -245,4 +245,5 @@
     <string name="not_connected_bubble">Not Connected</string>
     <string name="connected_bubble">Connected</string>
     <string name="failed_bubble">Failed</string>
+    <string name="disconnect">Disconnect</string>
 </resources>