Prevent crash

app/src/main/java/eu/faircode/email/FragmentOptionsBehavior.java

@@ -36,6 +36,7 @@ import android.widget.Toast;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.widget.SwitchCompat;
+import androidx.lifecycle.Lifecycle;
 import androidx.preference.PreferenceManager;
 
 public class FragmentOptionsBehavior extends FragmentBase implements SharedPreferences.OnSharedPreferenceChangeListener {
@@ -212,6 +213,7 @@ public class FragmentOptionsBehavior extends FragmentBase implements SharedPrefe
 
     @Override
     public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
+        if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
             setOptions();
     }
 

app/src/main/java/eu/faircode/email/FragmentOptionsConnection.java

@@ -152,6 +152,7 @@ public class FragmentOptionsConnection extends FragmentBase implements SharedPre
 
     @Override
     public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
+        if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
             setOptions();
     }
 

app/src/main/java/eu/faircode/email/FragmentOptionsDisplay.java

@@ -39,6 +39,7 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.widget.SwitchCompat;
+import androidx.lifecycle.Lifecycle;
 import androidx.preference.PreferenceManager;
 
 public class FragmentOptionsDisplay extends FragmentBase implements SharedPreferences.OnSharedPreferenceChangeListener {
@@ -333,6 +334,7 @@ public class FragmentOptionsDisplay extends FragmentBase implements SharedPrefer
 
     @Override
     public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
+        if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
             setOptions();
     }
 

app/src/main/java/eu/faircode/email/FragmentOptionsMisc.java

@@ -43,6 +43,7 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.widget.SwitchCompat;
 import androidx.constraintlayout.widget.Group;
+import androidx.lifecycle.Lifecycle;
 import androidx.preference.PreferenceManager;
 
 public class FragmentOptionsMisc extends FragmentBase implements SharedPreferences.OnSharedPreferenceChangeListener {
@@ -210,10 +211,12 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
 
     @Override
     public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
+        if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED)) {
             setOptions();
             if ("last_cleanup".equals(key))
                 setLastCleanup(prefs.getLong(key, -1));
         }
+    }
 
     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {

app/src/main/java/eu/faircode/email/FragmentOptionsNotifications.java

@@ -45,6 +45,7 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.widget.SwitchCompat;
 import androidx.constraintlayout.widget.Group;
+import androidx.lifecycle.Lifecycle;
 import androidx.preference.PreferenceManager;
 
 import static android.app.Activity.RESULT_OK;
@@ -242,6 +243,7 @@ public class FragmentOptionsNotifications extends FragmentBase implements Shared
 
     @Override
     public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
+        if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
             setOptions();
     }
 

app/src/main/java/eu/faircode/email/FragmentOptionsSend.java

@@ -36,6 +36,7 @@ import android.widget.Toast;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.widget.SwitchCompat;
+import androidx.lifecycle.Lifecycle;
 import androidx.preference.PreferenceManager;
 
 public class FragmentOptionsSend extends FragmentBase implements SharedPreferences.OnSharedPreferenceChangeListener {
@@ -180,6 +181,7 @@ public class FragmentOptionsSend extends FragmentBase implements SharedPreferenc
 
     @Override
     public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
+        if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
             setOptions();
     }
 

app/src/main/java/eu/faircode/email/FragmentOptionsSynchronize.java

@@ -42,6 +42,7 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.widget.SwitchCompat;
 import androidx.fragment.app.DialogFragment;
+import androidx.lifecycle.Lifecycle;
 import androidx.preference.PreferenceManager;
 
 import java.text.SimpleDateFormat;
@@ -244,6 +245,7 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
 
     @Override
     public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
+        if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
             setOptions();
     }