Added Register Screen and started Lost_PW Screen

Frontend/app/src/main/AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="com.example.mobileapp">
 
     <application
@@ -9,8 +10,13 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".Overview_Screen"></activity>
-        <activity android:name=".Start_Screen">
+        <activity android:name=".Lost_PW"></activity>
+        <activity android:name=".Register_Screen" />
+        <activity
+            android:name=".Start_Screen"
+            android:configChanges="orientation"
+            android:screenOrientation="sensorPortrait"
+            tools:ignore="LockedOrientationActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

Frontend/app/src/main/java/com/example/mobileapp/Overview_Screen.java → Frontend/app/src/main/java/com/example/mobileapp/Lost_PW.java

@@ -2,13 +2,29 @@ package com.example.mobileapp;
 
 import androidx.appcompat.app.AppCompatActivity;
 
+import android.content.Intent;
+import android.view.View;
+import android.widget.ImageView;
 import android.os.Bundle;
 
-public class Overview_Screen extends AppCompatActivity {
+public class Lost_PW extends AppCompatActivity {
+
+    private ImageView back_button;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_overview__screen);
+        setContentView(R.layout.lost_pw);
+
+        back_button = (ImageView)findViewById(R.id.back_button);
+
+        back_button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                startActivity(new Intent(Lost_PW.this, Start_Screen.class));
+            }
+        });
     }
+
+
 }

Frontend/app/src/main/java/com/example/mobileapp/Register_Screen.java

+package com.example.mobileapp;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ImageView;
+
+public class Register_Screen extends AppCompatActivity {
+
+    private EditText name;
+    private EditText email;
+    private EditText pw;
+    private EditText pw_confirm;
+
+    private Button register;
+
+    private ImageView back_button;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.register_screen);
+
+        name = (EditText)findViewById(R.id.email_ph);
+        email = (EditText)findViewById(R.id.editText2);
+        pw = (EditText)findViewById(R.id.editText3);
+        pw_confirm = (EditText)findViewById(R.id.editText4);
+        register = (Button)findViewById(R.id.btnRegister);
+        back_button = (ImageView)findViewById(R.id.back_button);
+
+        back_button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent back_to_start = new Intent(Register_Screen.this
+                        , Start_Screen.class);
+                startActivity(back_to_start);
+            }
+        });
+
+
+    }
+
+}

Frontend/app/src/main/java/com/example/mobileapp/Start_Screen.java

 package com.example.mobileapp;
 
 import androidx.appcompat.app.AppCompatActivity;
-
 import android.content.Intent;
 import android.os.Bundle;
 import android.view.View;
 import android.widget.Button;
 import android.widget.EditText;
+import android.widget.TextView;
 
 public class Start_Screen extends AppCompatActivity {
 
-    private EditText Email;
-    private EditText Password;
-    private Button Login;
+    private TextView register;
+    private Button login;
+    private TextView pw_lost;
+    private EditText email;
+    private EditText password;
+
+
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
+        register = (TextView)findViewById(R.id.textView4);
+        login = (Button)findViewById(R.id.btnLogin);
+        pw_lost = (TextView)findViewById(R.id.textView2);
+
+        email = (EditText)findViewById(R.id.email_ph);
+        password = (EditText)findViewById(R.id.editText2);
+
+
 
+        /**
+         * Opens Register Screen
+         */
+        register.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                startActivity(new Intent(Start_Screen.this, Register_Screen.class));
+            }
+        });
+
+        pw_lost.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                startActivity(new Intent(Start_Screen.this, Lost_PW.class));
+            }
+        });
+
+        login.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                email.setError("Username or PW wrong");
+                password.setError("Username or PW wrong");
+            }
+        });
+
+
+        }
+
+    /**
+     * When hitting the back button in Android the App will close, instead
+     * of returning to the top activity in the stack
+     */
+    @Override
+    public void onBackPressed(){
+        Intent close = new Intent(Intent.ACTION_MAIN);
+        close.addCategory(Intent.CATEGORY_HOME);
+        close.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        startActivity(close);
 
     }
 

Frontend/app/src/main/res/drawable/btn_rounded.xml

 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
-<solid android:color="#C5B358"/>
+<solid android:color="#C5B358" />
 <corners android:radius="15dp"/>
 </shape>
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