diff --git a/app/src/main/java/de/sebse/fuplanner/fragments/PrefsFragment.java b/app/src/main/java/de/sebse/fuplanner/fragments/PrefsFragment.java
index 119f6ff..c4c0b78 100644
--- a/app/src/main/java/de/sebse/fuplanner/fragments/PrefsFragment.java
+++ b/app/src/main/java/de/sebse/fuplanner/fragments/PrefsFragment.java
@@ -14,12 +14,9 @@ import de.sebse.fuplanner.services.fulogin.AccountGeneral;
 import de.sebse.fuplanner.services.kvv.sync.KVVContentProvider;
 import de.sebse.fuplanner.tools.CustomAccountManager;
 import de.sebse.fuplanner.tools.Preferences;
-import de.sebse.fuplanner.tools.logging.Logger;
 
 public class PrefsFragment extends PreferenceFragmentCompat implements SharedPreferences.OnSharedPreferenceChangeListener {
 
-    private Logger log = new Logger(this);
-
     public static PrefsFragment newInstance() {
         PrefsFragment fragment = new PrefsFragment();
         Bundle args = new Bundle();
diff --git a/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailAnnounceAdapter.java b/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailAnnounceAdapter.java
index 1e26f9d..c5efa3b 100644
--- a/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailAnnounceAdapter.java
+++ b/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailAnnounceAdapter.java
@@ -21,14 +21,12 @@ import de.sebse.fuplanner.services.kvv.types.Announcement;
 import de.sebse.fuplanner.services.kvv.types.Modules;
 import de.sebse.fuplanner.tools.Regex;
 import de.sebse.fuplanner.tools.UtilsDate;
-import de.sebse.fuplanner.tools.logging.Logger;
 import de.sebse.fuplanner.tools.ui.AnnouncementViewHolder;
 import de.sebse.fuplanner.tools.ui.CustomViewHolder;
 
 class ModDetailAnnounceAdapter extends RecyclerView.Adapter<CustomViewHolder> {
 
     @Nullable private Modules.Module mModule = null;
-    private Logger log = new Logger(this);
     @NonNull private final Download.OnDownloadRequestInterface requestInterface;
 
     ModDetailAnnounceAdapter(@NonNull Download.OnDownloadRequestInterface requestInterface) {
diff --git a/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailAssignmentAdapter.java b/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailAssignmentAdapter.java
index d2fc2a9..730ad00 100644
--- a/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailAssignmentAdapter.java
+++ b/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailAssignmentAdapter.java
@@ -21,14 +21,12 @@ import de.sebse.fuplanner.services.kvv.types.Assignment;
 import de.sebse.fuplanner.services.kvv.types.Modules;
 import de.sebse.fuplanner.tools.Regex;
 import de.sebse.fuplanner.tools.UtilsDate;
-import de.sebse.fuplanner.tools.logging.Logger;
 import de.sebse.fuplanner.tools.ui.AnnouncementViewHolder;
 import de.sebse.fuplanner.tools.ui.CustomViewHolder;
 
 class ModDetailAssignmentAdapter extends RecyclerView.Adapter<CustomViewHolder> {
 
     @Nullable private Modules.Module mModule = null;
-    private Logger log = new Logger(this);
     @NonNull private final Download.OnDownloadRequestInterface requestInterface;
 
     ModDetailAssignmentAdapter(@NonNull Download.OnDownloadRequestInterface requestInterface) {
diff --git a/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailEventAdapter.java b/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailEventAdapter.java
index 2897a33..b407e2c 100644
--- a/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailEventAdapter.java
+++ b/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailEventAdapter.java
@@ -21,7 +21,6 @@ import de.sebse.fuplanner.services.kvv.types.EventList;
 import de.sebse.fuplanner.services.kvv.types.GroupedEvents;
 import de.sebse.fuplanner.services.kvv.types.Modules;
 import de.sebse.fuplanner.tools.UtilsDate;
-import de.sebse.fuplanner.tools.logging.Logger;
 import de.sebse.fuplanner.tools.ui.CustomViewHolder;
 import de.sebse.fuplanner.tools.ui.ItemViewHolder;
 import de.sebse.fuplanner.tools.ui.StringViewHolder;
@@ -43,8 +42,6 @@ class ModDetailEventAdapter extends RecyclerView.Adapter<CustomViewHolder> {
     private Modules.Module mValue;
     private final ArrayList<Pair<Integer, Object>> mPositionalData;
 
-    private final Logger log = new Logger(this);
-
     ModDetailEventAdapter() {
         mValue = null;
         mPositionalData = new ArrayList<>();
diff --git a/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailOverviewAdapter.java b/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailOverviewAdapter.java
index b9d268d..88b0d8c 100644
--- a/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailOverviewAdapter.java
+++ b/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailOverviewAdapter.java
@@ -22,7 +22,6 @@ import de.sebse.fuplanner.services.kvv.types.Event;
 import de.sebse.fuplanner.services.kvv.types.Lecturer;
 import de.sebse.fuplanner.services.kvv.types.Modules;
 import de.sebse.fuplanner.tools.UtilsDate;
-import de.sebse.fuplanner.tools.logging.Logger;
 import de.sebse.fuplanner.tools.ui.CustomViewHolder;
 import de.sebse.fuplanner.tools.ui.ItemViewHolder;
 import de.sebse.fuplanner.tools.ui.MailViewHolder;
@@ -44,7 +43,6 @@ class ModDetailOverviewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHol
 
     private Modules.Module mValue;
     private final ArrayList<Pair<Integer, Object>> mPositionalData;
-    private Logger log = new Logger(this);
 
     ModDetailOverviewAdapter(@Nullable final ModDetailListener listener) {
         mValue = null;
diff --git a/app/src/main/java/de/sebse/fuplanner/services/fulogin/FUAuthenticator.java b/app/src/main/java/de/sebse/fuplanner/services/fulogin/FUAuthenticator.java
index 8814032..c2e8526 100644
--- a/app/src/main/java/de/sebse/fuplanner/services/fulogin/FUAuthenticator.java
+++ b/app/src/main/java/de/sebse/fuplanner/services/fulogin/FUAuthenticator.java
@@ -4,7 +4,6 @@ import android.accounts.AbstractAccountAuthenticator;
 import android.accounts.Account;
 import android.accounts.AccountAuthenticatorResponse;
 import android.accounts.AccountManager;
-import android.accounts.AccountsException;
 import android.accounts.NetworkErrorException;
 import android.content.Context;
 import android.content.Intent;
@@ -13,13 +12,9 @@ import android.text.TextUtils;
 
 import java.util.concurrent.ExecutionException;
 
-import de.sebse.fuplanner.tools.CustomAccountManager;
-import de.sebse.fuplanner.tools.logging.Logger;
-
 public class FUAuthenticator extends AbstractAccountAuthenticator {
 
     private final Context mContext;
-    private Logger log = new Logger(this);
 
     public FUAuthenticator(Context context) {
         super(context);
diff --git a/app/src/main/java/de/sebse/fuplanner/services/kvv/types/Modules.java b/app/src/main/java/de/sebse/fuplanner/services/kvv/types/Modules.java
index 188c755..b5e35c9 100644
--- a/app/src/main/java/de/sebse/fuplanner/services/kvv/types/Modules.java
+++ b/app/src/main/java/de/sebse/fuplanner/services/kvv/types/Modules.java
@@ -31,7 +31,6 @@ public class Modules implements Iterable<Modules.Module>, Serializable {
     private SortedListModule list;
     private final String mUsername;
     private transient long mLastTimestamp = 0;
-    //private transient Logger log = new Logger(this);
     private static final String FILE_NAME = "ModuleListSaving";
     private static final String FILE_NAME_TIMESTAMP = "ModuleListSavingTimestamp";
 
diff --git a/app/src/main/java/de/sebse/fuplanner/services/kvv/types/Resource.java b/app/src/main/java/de/sebse/fuplanner/services/kvv/types/Resource.java
index ae21136..bf3a32a 100644
--- a/app/src/main/java/de/sebse/fuplanner/services/kvv/types/Resource.java
+++ b/app/src/main/java/de/sebse/fuplanner/services/kvv/types/Resource.java
@@ -8,7 +8,6 @@ import java.util.ArrayList;
 import androidx.annotation.LayoutRes;
 import androidx.annotation.NonNull;
 import de.sebse.fuplanner.R;
-import de.sebse.fuplanner.tools.logging.Logger;
 import de.sebse.fuplanner.tools.ui.treeview.LayoutItemType;
 import de.sebse.fuplanner.tools.ui.treeview.TreeNode;
 
@@ -45,7 +44,6 @@ public abstract class Resource implements Serializable {
     }
 
     public String getUrl() {
-        Logger log = new Logger(this);
         return url;
     }
 
@@ -71,7 +69,6 @@ public abstract class Resource implements Serializable {
 
         public Document(String author, String title, long modifiedDate, String url, boolean visible, String container, String body) {
             super(author, title, modifiedDate, url, visible, container);
-            Logger log = new Logger(this);
             this.body = body;
             this.urls = new ArrayList<>();
         }
diff --git a/app/src/main/java/de/sebse/fuplanner/tools/CustomAccountManager.java b/app/src/main/java/de/sebse/fuplanner/tools/CustomAccountManager.java
index 7256d73..05ed592 100644
--- a/app/src/main/java/de/sebse/fuplanner/tools/CustomAccountManager.java
+++ b/app/src/main/java/de/sebse/fuplanner/tools/CustomAccountManager.java
@@ -15,12 +15,10 @@ import java.io.IOException;
 
 import androidx.annotation.Nullable;
 import de.sebse.fuplanner.services.kvv.Login;
-import de.sebse.fuplanner.tools.logging.Logger;
 
 public class CustomAccountManager {
     private final AccountManager mAccountManager;
     private final ActivityInterface mActivityInterface;
-    private Logger log = new Logger(this);
 
     public CustomAccountManager(AccountManager manager, ActivityInterface activityInterface) {
         mAccountManager = manager;
@@ -69,7 +67,6 @@ public class CustomAccountManager {
 
     public void deleteAccount(String accountType) {
         Account[] accounts = mAccountManager.getAccountsByType(accountType);
-        int[] count = {accounts.length};
         for (Account account: accounts) {
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1) {
                 mAccountManager.removeAccount(account, null, null, null);
diff --git a/app/src/main/java/de/sebse/fuplanner/tools/ui/treeview/DocumentNodeBinder.java b/app/src/main/java/de/sebse/fuplanner/tools/ui/treeview/DocumentNodeBinder.java
index 151e5b4..de199f5 100644
--- a/app/src/main/java/de/sebse/fuplanner/tools/ui/treeview/DocumentNodeBinder.java
+++ b/app/src/main/java/de/sebse/fuplanner/tools/ui/treeview/DocumentNodeBinder.java
@@ -11,7 +11,6 @@ import de.sebse.fuplanner.R;
 import de.sebse.fuplanner.services.kvv.types.Resource;
 import de.sebse.fuplanner.services.kvv.ui.Download;
 import de.sebse.fuplanner.tools.UtilsDate;
-import de.sebse.fuplanner.tools.logging.Logger;
 import de.sebse.fuplanner.tools.ui.cardview.ExpandableCardView;
 
 /**
@@ -51,7 +50,6 @@ public class DocumentNodeBinder extends TreeViewBinder<DocumentNodeBinder.ViewHo
             String s = fileNode.getUrl(i).url;
             if (s != null) {
                 String name = fileNode.getUrl(i).name;
-                Logger log = new Logger(this);
                 this.requestInterface.request(name, s);
             }
         });