Adding some functionalitys

app/src/main/java/fr/romanet/vj/apps/myweather/ShowTemparature.java

@@ -1,9 +1,19 @@
 package fr.romanet.vj.apps.myweather;
 
+import androidx.annotation.NonNull;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.Toolbar;
 
+import android.content.Intent;
 import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import fr.romanet.vj.apps.myweather.bo.City;
+import fr.romanet.vj.apps.myweather.repository.CityRepository;
 
 public class ShowTemparature extends AppCompatActivity {
 
@@ -23,4 +33,36 @@ public class ShowTemparature extends AppCompatActivity {
         getSupportActionBar().setDisplayHomeAsUpEnabled(true);
         getSupportActionBar().setDisplayShowHomeEnabled(true);
     }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.menu_items, menu);
+        return true;
+
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item)
+    {
+        //We handle the click on a menu item
+        if (item.getItemId() == R.id.item_delete)
+        {
+            cityToDelete();
+            Intent intent = new Intent(ShowTemparature.this, MainActivity.class);
+            startActivity(intent);
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+    public void cityToDelete()
+    {
+        final List<City> city = CityRepository.getInstance(this).getCity();
+        for(int i = 0; i < city.size(); i++)
+        {
+            if(city.get(i).nameCity.equals(currentCityName))
+            {
+                CityRepository.getInstance(this).deleteCity(city.get(i));
+            }
+        }
+    }
 }

app/src/main/res/menu/menu_items.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item
+        android:id="@+id/item_delete"
+        android:title="@string/deleteItem"
+        app:showAsAction="never"/>
+</menu>

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

@@ -13,5 +13,6 @@
     <string name="title_activity_test_constraint_layout">TestConstraintLayout</string>
 
     <string name="firstAction">Please click on the Add button in order to add a city</string>
+    <string name="deleteItem">Delete</string>
 
 </resources>