MainActivity class : make the connection between first and second screen for the moment

app/build.gradle

@@ -33,6 +33,8 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'com.google.android.material:material:1.1.0'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.navigation:navigation-fragment:2.2.2'
+    implementation 'androidx.navigation:navigation-ui:2.2.2'
     testImplementation 'junit:junit:4.+'
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'

app/src/main/AndroidManifest.xml

@@ -9,6 +9,7 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.MyWeather">
+        <activity android:name=".AddCity"></activity>
         <activity android:name=".MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

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

@@ -0,0 +1,14 @@
+package fr.romanet.vj.apps.myweather;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+
+public class AddCity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.add_city_page);
+    }
+}

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

@@ -1,14 +1,33 @@
 package fr.romanet.vj.apps.myweather;
 
+import android.widget.Button;
+import android.content.*;
 import androidx.appcompat.app.AppCompatActivity;
-
 import android.os.Bundle;
+import android.view.View;
 
 public class MainActivity extends AppCompatActivity {
 
+    private Button buttonAddCity;
+
     @Override
-    protected void onCreate(Bundle savedInstanceState) {
+    protected void onCreate(Bundle savedInstanceState)
+    {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+
+        buttonAddCity = (Button) findViewById(R.id.fab);
+        buttonAddCity.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                openAddCityPage();
+            }
+        });
+    }
+
+    public void openAddCityPage()
+    {
+        Intent intent = new Intent(this, AddCity.class);
+        startActivity(intent);
     }
 }

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

@@ -15,7 +15,7 @@
         <androidx.appcompat.widget.Toolbar
             android:id="@+id/toolbar"
             android:layout_width="match_parent"
-            android:layout_height="?attr/actionBarSize"
+            android:layout_height="75dp"
             android:background="?attr/colorPrimary"
             app:title="MyWeather"
             app:popupTheme="@style/Theme.MyWeather.PopupOverlay" />
@@ -46,6 +46,7 @@
         android:layout_height="wrap_content"
         android:layout_gravity="bottom|end"
         android:layout_margin="@dimen/fab_margin"
+        android:layout_marginRight="10dp"
         app:backgroundTint="#FF0202"
         app:rippleColor="#FFFFFF"
         app:srcCompat="@android:drawable/ic_input_add" />

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

@@ -0,0 +1,68 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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=".MainActivity"
+    android:orientation="vertical">
+
+    <com.google.android.material.appbar.AppBarLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:theme="@style/Theme.MyWeather.AppBarOverlay">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="75dp"
+            android:background="?attr/colorPrimary"
+            app:title="Add a city"
+            app:popupTheme="@style/Theme.MyWeather.PopupOverlay" />
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="130dp" />
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="match_parent"
+        android:layout_height="51dp"
+        android:textSize="20sp"
+        android:gravity="center"
+        android:layout_marginRight="10dp"
+        android:layout_marginLeft="10dp"
+        android:text="Enter the name of the city you                       want to add :"
+        tools:layout_editor_absoluteX="89dp"
+        tools:layout_editor_absoluteY="566dp" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="120dp" />
+
+    <EditText
+        android:id="@+id/editText"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginLeft="10dp"
+        android:layout_marginRight="10dp"
+        android:hint="City name"
+        android:inputType="textCapWords" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="100dp" />
+
+    <Button
+        android:id="@+id/btnSave"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginLeft="10dp"
+        android:layout_marginRight="10dp"
+        android:text="Save"
+        android:textSize="12sp"/>
+
+
+</LinearLayout>

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

@@ -9,4 +9,5 @@
 
     <string name="hello_first_fragment">Hello first fragment</string>
     <string name="hello_second_fragment">Hello second fragment. Arg: %1$s</string>
+    <string name="title_activity_main2">MainActivity</string>
 </resources>