diff --git a/src/org/kde/kdeconnect/Backends/LanBackend/LanLink.java b/src/org/kde/kdeconnect/Backends/LanBackend/LanLink.java
--- a/src/org/kde/kdeconnect/Backends/LanBackend/LanLink.java
+++ b/src/org/kde/kdeconnect/Backends/LanBackend/LanLink.java
@@ -53,8 +53,8 @@
     }
 
     public enum ConnectionStarted {
-        Locally, Remotely;
-    };
+        Locally, Remotely
+    }
 
     private ConnectionStarted connectionSource; // If the other device sent me a broadcast,
                                                 // I should not close the connection with it
diff --git a/src/org/kde/kdeconnect/Plugins/RemoteKeyboardPlugin/RemoteKeyboardService.java b/src/org/kde/kdeconnect/Plugins/RemoteKeyboardPlugin/RemoteKeyboardService.java
--- a/src/org/kde/kdeconnect/Plugins/RemoteKeyboardPlugin/RemoteKeyboardService.java
+++ b/src/org/kde/kdeconnect/Plugins/RemoteKeyboardPlugin/RemoteKeyboardService.java
@@ -62,9 +62,6 @@
     public boolean visible = false;
 
     KeyboardView inputView = null;
-    private final int StatusKeyIdx = 3;
-    private final int connectedIcon = R.drawable.ic_phonelink_white_36dp;
-    private final int disconnectedIcon = R.drawable.ic_phonelink_off_white_36dp;
 
     Handler handler;
 
@@ -75,8 +72,11 @@
         List<Keyboard.Key> keys = currentKeyboard.getKeys();
         boolean connected = RemoteKeyboardPlugin.isConnected();
 //        Log.d("RemoteKeyboardService", "Updating keyboard connection icon, connected=" + connected);
-        keys.get(StatusKeyIdx).icon = getResources().getDrawable(connected ? connectedIcon : disconnectedIcon);
-        inputView.invalidateKey(StatusKeyIdx);
+        int disconnectedIcon = R.drawable.ic_phonelink_off_white_36dp;
+        int connectedIcon = R.drawable.ic_phonelink_white_36dp;
+        int statusKeyIdx = 3;
+        keys.get(statusKeyIdx).icon = getResources().getDrawable(connected ? connectedIcon : disconnectedIcon);
+        inputView.invalidateKey(statusKeyIdx);
     }
 
     @Override
diff --git a/src/org/kde/kdeconnect/Plugins/SftpPlugin/SftpPlugin.java b/src/org/kde/kdeconnect/Plugins/SftpPlugin/SftpPlugin.java
--- a/src/org/kde/kdeconnect/Plugins/SftpPlugin/SftpPlugin.java
+++ b/src/org/kde/kdeconnect/Plugins/SftpPlugin/SftpPlugin.java
@@ -39,8 +39,6 @@
 
     private static final SimpleSftpServer server = new SimpleSftpServer();
 
-    private int sftpPermissionExplanation = R.string.sftp_permission_explanation;
-
     @Override
     public String getDisplayName() {
         return context.getResources().getString(R.string.pref_plugin_sftp);
@@ -54,7 +52,7 @@
     @Override
     public boolean onCreate() {
         server.init(context, device);
-        permissionExplanation = sftpPermissionExplanation;
+        permissionExplanation = R.string.sftp_permission_explanation;
         return true;
     }
 
diff --git a/src/org/kde/kdeconnect/Plugins/SharePlugin/SharePlugin.java b/src/org/kde/kdeconnect/Plugins/SharePlugin/SharePlugin.java
--- a/src/org/kde/kdeconnect/Plugins/SharePlugin/SharePlugin.java
+++ b/src/org/kde/kdeconnect/Plugins/SharePlugin/SharePlugin.java
@@ -66,11 +66,9 @@
 
     final static boolean openUrlsDirectly = true;
 
-    private int sharePermissionExplanation = R.string.share_optional_permission_explanation;
-
     @Override
     public boolean onCreate() {
-        optionalPermissionExplanation = sharePermissionExplanation;
+        optionalPermissionExplanation = R.string.share_optional_permission_explanation;
         return true;
     }
 
diff --git a/src/org/kde/kdeconnect/UserInterface/PairingFragment.java b/src/org/kde/kdeconnect/UserInterface/PairingFragment.java
--- a/src/org/kde/kdeconnect/UserInterface/PairingFragment.java
+++ b/src/org/kde/kdeconnect/UserInterface/PairingFragment.java
@@ -56,7 +56,6 @@
     private static final int RESULT_PAIRING_SUCCESFUL = Activity.RESULT_FIRST_USER;
 
     private View rootView;
-    private View listRootView;
     private SwipeRefreshLayout mSwipeRefreshLayout;
     private MaterialActivity mActivity;
 
@@ -76,7 +75,7 @@
         setHasOptionsMenu(true);
 
         rootView = inflater.inflate(R.layout.activity_refresh_list, container, false);
-        listRootView = rootView.findViewById(R.id.listView1);
+        View listRootView = rootView.findViewById(R.id.listView1);
         mSwipeRefreshLayout = (SwipeRefreshLayout) rootView.findViewById(R.id.refresh_list_layout);
         mSwipeRefreshLayout.setOnRefreshListener(
                 new SwipeRefreshLayout.OnRefreshListener() {