Refactor logshipper to maintenance

app/src/main/java/info/nightscout/androidaps/plugins/Maintenance/MaintenanceFragment.java

@@ -39,10 +39,24 @@ public class MaintenanceFragment extends Fragment {
         view.findViewById(R.id.nav_resetdb).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-
+                new AlertDialog.Builder(getContext())
+                        .setTitle(R.string.nav_resetdb)
+                        .setMessage(R.string.reset_db_confirm)
+                        .setNegativeButton(android.R.string.cancel, null)
+                        .setPositiveButton(android.R.string.ok, (dialog, which) -> {
+                            MainApp.getDbHelper().resetDatabases();
+                            // should be handled by Plugin-Interface and
+                            // additional service interface and plugin registry
+                            FoodPlugin.getPlugin().getService().resetFood();
+                            TreatmentsPlugin.getPlugin().getService().resetTreatments();
+                        })
+                        .create()
+                        .show();
             }
         });
 
+
+
         return view;
     }
 

app/src/main/java/info/nightscout/androidaps/plugins/Maintenance/MaintenancePlugin.java

@@ -146,21 +146,6 @@ public class MaintenancePlugin extends PluginBase {
         }
     }
 
-    public void resetDb() {
-//        new AlertDialog.Builder(this)
-//                .setTitle(R.string.nav_resetdb)
-//                .setMessage(R.string.reset_db_confirm)
-//                .setNegativeButton(android.R.string.cancel, null)
-//                .setPositiveButton(android.R.string.ok, (dialog, which) -> {
-//                    MainApp.getDbHelper().resetDatabases();
-//                    // should be handled by Plugin-Interface and
-//                    // additional service interface and plugin registry
-//                    FoodPlugin.getPlugin().getService().resetFood();
-//                    TreatmentsPlugin.getPlugin().getService().resetTreatments();
-//                })
-//                .create()
-//                .show();
-    }
 
     public void exportSettings() {
 //        ImportExportPrefs.verifyStoragePermissions(this);

app/src/main/java/info/nightscout/utils/ImportExportPrefs.java

@@ -3,12 +3,14 @@ package info.nightscout.utils;
 import android.Manifest;
 import android.app.Activity;
 import android.app.AlertDialog;
+import android.content.Context;
 import android.content.DialogInterface;
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.os.Environment;
 import android.preference.PreferenceManager;
 import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.ContextCompat;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;