app/build.gradle

@@ -32,4 +32,6 @@ dependencies {
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+    implementation "com.squareup.retrofit2:retrofit:2.6.2"
+    implementation "com.squareup.retrofit2:converter-gson:2.6.2"
 }

app/src/main/AndroidManifest.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="it.unisannio.ding.ids.wedroid.app">
+    <uses-permission android:name="android.permission.INTERNET"/>
 
     <application
         android:allowBackup="true"
@@ -9,6 +10,7 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
+        <activity android:name=".LoginActivity"></activity>
         <activity android:name=".MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

app/src/main/java/it/unisannio/ding/ids/wedroid/app/LoginActivity.kt

@@ -0,0 +1,75 @@
+package it.unisannio.ding.ids.wedroid.app
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.util.Log
+import android.view.View
+import android.widget.Toast
+import it.unisannio.ding.ids.wedroid.wrapper.api.LoginService
+import it.unisannio.ding.ids.wedroid.wrapper.entity.UserPrototype
+import kotlinx.android.synthetic.main.activity_login.*
+import retrofit2.Call
+import retrofit2.Callback
+import retrofit2.Response
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+
+class LoginActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_login)
+
+
+
+    }
+
+    fun loginButton(v: View) {
+        if (username.text.isBlank() || istanceServer.text.isBlank() ||  password.text.isBlank()) {
+            Toast.makeText(this, "Riempire tutti i campi", Toast.LENGTH_LONG)
+                .show()
+            return
+        }
+
+
+
+        val userNameText = username.text.toString()
+        val passwordText = password.text.toString()
+
+        val service = Retrofit.Builder()
+            .addConverterFactory(GsonConverterFactory.create())
+            .baseUrl(istanceServer.text.toString())
+            .build()
+            .create(LoginService::class.java)
+
+
+
+        service.login(userNameText, passwordText).enqueue(object : Callback<UserPrototype> {
+            override fun onFailure(call: Call<UserPrototype>, t: Throwable) {
+                Toast.makeText(
+                    applicationContext,
+                    "Controlla la tua connessione internet",
+                    Toast.LENGTH_LONG
+                ).show()
+            }
+
+            override fun onResponse(call: Call<UserPrototype>, response: Response<UserPrototype>) {
+                if (response.code() != 200) {
+                    Toast.makeText(
+                        applicationContext,
+                        "Credenziali non corrette",
+                        Toast.LENGTH_LONG
+                    ).show()
+                    return
+                }
+                Toast.makeText(
+                    applicationContext,
+                    "Login effettuato con successo",
+                    Toast.LENGTH_LONG
+                ).show()
+
+            }
+
+        })
+    }
+}

app/src/main/java/it/unisannio/ding/ids/wedroid/app/MainActivity.kt

@@ -1,7 +1,9 @@
 package it.unisannio.ding.ids.wedroid.app
 
+import android.content.Intent
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import android.view.View
 import it.unisannio.ding.ids.wedroid.wrapper.api.BoardService
 
 class MainActivity : AppCompatActivity() {
@@ -10,5 +12,12 @@ class MainActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
         val service : BoardService? = null
+
+    }
+
+    fun login(v: View) {
+        startActivity(
+            Intent(this, LoginActivity::class.java)
+        )
     }
 }

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

@@ -0,0 +1,56 @@
+<?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=".LoginActivity">
+
+    <EditText
+        android:id="@+id/username"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="100dp"
+        android:ems="10"
+        android:hint="UserName"
+        android:inputType="textPersonName"
+        app:layout_constraintBottom_toTopOf="@+id/password"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+    <EditText
+        android:id="@+id/password"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="50dp"
+        android:ems="10"
+        android:hint="Password"
+        android:inputType="textPassword"
+        app:layout_constraintBottom_toTopOf="@+id/button"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="200dp"
+        android:onClick="loginButton"
+        android:text="LOGIN"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+    <EditText
+        android:id="@+id/istanceServer"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="50dp"
+        android:ems="10"
+        android:hint="Istance Server"
+        android:inputType="textPersonName"
+        app:layout_constraintBottom_toTopOf="@+id/username"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -7,6 +7,7 @@
     tools:context=".MainActivity">
 
     <TextView
+        android:id="@+id/textView"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="Hello World!"
@@ -15,4 +16,14 @@
         app:layout_constraintRight_toRightOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <Button
+        android:id="@+id/button2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:onClick="login"
+        android:text="Button"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/textView"
+        tools:layout_editor_absoluteX="168dp" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>