Adding the list of city (retrieved from the database)

app/src/main/AndroidManifest.xml

@@ -9,15 +9,22 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.MyWeather">
-        <!-- Adding an attribute to remove the app bar (.NoActionBar) only in the activity that allows the user to add a city, also declaring
-        the mainActivity as a parent of AddCity activity in order to go back to the mainActivity screen-->
-        <activity android:name=".AddCity"
+        <activity
+            android:name=".ShowTemparature"
             android:parentActivityName=".MainActivity"
-            android:theme="@style/Theme.MyWeather.NoActionBar">
-        </activity>
+            android:theme="@style/Theme.MyWeather.NoActionBar"></activity>
+        <!--
+         Adding an attribute to remove the app bar (.NoActionBar) only in the activity that allows the user to add a city, also declaring
+        the mainActivity as a parent of AddCity activity in order to go back to the mainActivity screen
+        -->
+        <activity
+            android:name=".AddCity"
+            android:parentActivityName=".MainActivity"
+            android:theme="@style/Theme.MyWeather.NoActionBar"></activity>
         <activity android:name=".MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>

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

@@ -4,6 +4,7 @@ import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.Toolbar;
 
 import android.content.Context;
+import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.view.View;
@@ -16,10 +17,6 @@ public class AddCity extends AppCompatActivity {
 
     private EditText cityName;
 
-    // - Define shared preferences var -
-    SharedPreferences sharedPreferences;
-
-
     @Override
     protected void onCreate(Bundle savedInstanceState)
     {
@@ -39,26 +36,15 @@ public class AddCity extends AppCompatActivity {
             {
                 cityName =  (EditText) findViewById(R.id.editTextNewCity);
                 final String newCityString = cityName.getEditableText().toString();
-                if(newCityString.length() == 0)
+                if(newCityString.isEmpty())
                 {
                     cityName.setError("Please, enter a city name");
                 }
-                else
-
-                    // - Load Shared Preferences (named 'prefs') -
-                    sharedPreferences = getSharedPreferences("prefs", Context.MODE_PRIVATE);
-
-                    // - Now the ImageView has to be hidden, so write it into the shared preferences -
-                    // - Put value '0' into the preference 'umbrella_visible' of the shared preference book called 'prefs'
-                    SharedPreferences.Editor editor = sharedPreferences.edit();
-                    editor.putInt("umbrella_visible", 0);
-                    editor.apply();
-
+                else {
                     saveCity(newCityString);
                     resetForm();
-
-
-
+                    openAddCityPage();
+                }
             }
         });
     }
@@ -73,4 +59,10 @@ public class AddCity extends AppCompatActivity {
         CityRepository.getInstance(this).addCity(new City(cityName));
     }
 
+    public void openAddCityPage()
+    {
+        Intent intent = new Intent(AddCity.this, MainActivity.class);
+        startActivity(intent);
+    }
+
 }

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

@@ -2,31 +2,59 @@ package fr.romanet.vj.apps.myweather;
 
 import android.content.*;
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.DividerItemDecoration;
+import androidx.recyclerview.widget.RecyclerView;
+
 import android.os.Bundle;
 import android.util.Log;
 import android.view.View;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.EditText;
 import android.widget.ImageView;
+import android.widget.ListView;
+import android.widget.TextView;
 
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
 
+import org.w3c.dom.Text;
+
+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 MainActivity extends AppCompatActivity {
 
-    // - Umbrella ImageView
-    public static ImageView imgPara;
-
-    // - Is used to store the shared preference value of umbrella visibility
-    public int umbrella_visible;
-
-    // - Define shared preferences var -
-    SharedPreferences sharedPreferences;
-
+    private ListView listViewCityNames;
+    private FloatingActionButton buttonPlus;
+    private ImageView imgPara;
+    private TextView addCityText;
 
     @Override
     protected void onCreate(Bundle savedInstanceState)
     {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
-        FloatingActionButton buttonPlus = (FloatingActionButton) findViewById(R.id.plusButton);
+
+        listViewCityNames = findViewById(R.id.listeCity);
+        buttonPlus = (FloatingActionButton) findViewById(R.id.plusButton);
+        imgPara = (ImageView) findViewById(R.id.imageView);
+        addCityText = (TextView) findViewById(R.id.textViewAddCity);
+
+        initialisingComponents();
+
+        listViewCityNames.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
+                String currentCityName = adapterView.getItemAtPosition(i).toString();
+                Intent intent = new Intent(MainActivity.this, ShowTemparature.class);
+                intent.putExtra( "cityName", currentCityName);
+                startActivity(intent);
+            }
+        });
+
         buttonPlus.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view)
@@ -34,46 +62,39 @@ public class MainActivity extends AppCompatActivity {
                 openAddCityPage();
             }
         });
-
-        // - Assign Activity ImageView to var -
-        imgPara = (ImageView) findViewById(R.id.imageView);
-
-        // - Load Shared Preferences (named 'prefs') -
-        sharedPreferences = getSharedPreferences("prefs", Context.MODE_PRIVATE);
-
-        // - Try to retrieve 'umbrella_visible', if not set return 3 -
-        umbrella_visible = sharedPreferences.getInt("umbrella_visible", 3);
-
-        // - If preference not yet defined, set value to 1 (visible) -
-        if (umbrella_visible == 3){
-
-            // - Put value '1' into the preference 'umbrella_visible' of the shared preference book called 'prefs'
-            SharedPreferences.Editor editor = sharedPreferences.edit();
-            editor.putInt("umbrella_visible", 1);
-            editor.apply();
-        }
-
-        Log.d("DEBUG1 -> create", Integer.toString(umbrella_visible));
-
     }
 
     @Override
-    protected void onResume() {
+    protected void onResume()
+    {
         super.onResume();
+        //initList();
+    }
 
-        // - Load Shared Preferences (named 'prefs') -
-        sharedPreferences = getSharedPreferences("prefs", Context.MODE_PRIVATE);
-
-        // - Try to retrieve 'umbrella_visible', if not set return 3 -
-        umbrella_visible = sharedPreferences.getInt("umbrella_visible", 3);
-        Log.d("DEBUG1 -> resume", Integer.toString(umbrella_visible));
-
-        // - If 'umbrella_visible' is equal to '0', we have to hide the ImageView -
-        if(umbrella_visible == 0){
-
-            // - Hide ImageView -
-            imgPara.setVisibility(View.GONE);
+    public void initialisingComponents()
+    {
+        final List<City> city = CityRepository.getInstance(this).getCity();
+        if(city.isEmpty())
+        {
+            listViewCityNames.setVisibility(View.GONE);
         }
+        else{
+            imgPara.setVisibility(View.GONE);
+            addCityText.setVisibility(View.GONE);
+        }
+        initList();
+    }
+
+    public void initList()
+    {
+        final List<City> city = CityRepository.getInstance(this).getCity();
+        ArrayList<String> listeExample = new ArrayList<String>();
+        for(int i = 0; i < city.size(); i++)
+        {
+            listeExample.add("" + city.get(i).nameCity);
+        }
+        ArrayAdapter<String> adapter = new ArrayAdapter<String>( this, android.R.layout.simple_list_item_1, listeExample);
+        listViewCityNames.setAdapter(adapter);
     }
 
     public void openAddCityPage()

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

@@ -0,0 +1,26 @@
+package fr.romanet.vj.apps.myweather;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+
+import android.os.Bundle;
+
+public class ShowTemparature extends AppCompatActivity {
+
+    private String currentCityName;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_temparature);
+
+        currentCityName = (String) getIntent().getExtras().get("cityName");
+
+        Toolbar toolbarAddCity = (Toolbar) findViewById(R.id.toolbarCityTemp);
+        toolbarAddCity.setTitle(currentCityName);
+        setSupportActionBar(toolbarAddCity);
+
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+        getSupportActionBar().setDisplayShowHomeEnabled(true);
+    }
+}

app/src/main/res/layout/activity_main.xml

@@ -7,6 +7,7 @@
     tools:context=".MainActivity">
 
     <com.google.android.material.appbar.AppBarLayout
+        android:id="@+id/appBarLayout"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:theme="@style/Theme.MyWeather.AppBarOverlay"
@@ -24,7 +25,7 @@
         app:srcCompat="@drawable/ic_baseline_umbrella_24" />
 
     <TextView
-        android:id="@+id/textView"
+        android:id="@+id/textViewAddCity"
         android:layout_width="match_parent"
         android:layout_height="51dp"
         android:gravity="center"
@@ -46,4 +47,11 @@
         app:rippleColor="#FFFFFF"
         app:srcCompat="@android:drawable/ic_input_add"/>
 
+    <ListView
+        android:id="@+id/listeCity"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_constraintTop_toBottomOf="@+id/appBarLayout"
+        tools:layout_editor_absoluteX="6dp" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/activity_temparature.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ShowTemparature">
+
+    <com.google.android.material.appbar.AppBarLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:theme="@style/Theme.MyWeather.AppBarOverlay"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbarCityTemp"
+            android:layout_width="match_parent"
+            android:layout_height="60dp"
+            android:background="?attr/colorPrimary"
+            android:clickable="false"
+            android:minHeight="60dp"
+            app:popupTheme="@style/Theme.MyWeather.PopupOverlay" />
+
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>