ADD file via upload

MainActivity.java

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+package com.example.WhatMeal;
+
+import androidx.appcompat.app.AppCompatActivity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+
+public class MainActivity extends AppCompatActivity
+{
+    MenuActivity.MyHelper myHelper;
+    private TextView text_food;
+    private TextView text_store;
+    private Button btn_eat;
+    private Button btn_menu;
+    private Button btn_inter;
+    private Button btn_gps;
+    @Override
+    protected void onCreate(Bundle savedInstanceState)
+    {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        btn_eat=(Button)findViewById(R.id.btn_eat);
+        btn_eat.setOnClickListener(new View.OnClickListener()
+        {
+            @Override
+            public void onClick(View v)
+            {
+                Intent intent = new Intent(MainActivity.this, EatWhatActivity.class);
+                startActivity(intent);
+            }
+        });
+        btn_menu=(Button)findViewById(R.id.btn_menu);
+        btn_menu.setOnClickListener(new View.OnClickListener()
+        {
+            @Override
+            public void onClick(View v)
+            {
+                Intent intent = new Intent(MainActivity.this, MenuActivity.class);
+                startActivity(intent);
+            }
+        });
+        btn_inter=(Button)findViewById(R.id.btn_inter);
+        btn_inter.setOnClickListener(new View.OnClickListener()
+        {
+            @Override
+            public void onClick(View v)
+            {
+                Intent intent = new Intent(MainActivity.this, InterActivity.class);
+                startActivity(intent);
+            }
+        });
+        btn_gps=(Button)findViewById(R.id.btn_gps);
+        btn_gps.setOnClickListener(new View.OnClickListener()
+        {
+            @Override
+            public void onClick(View v)
+            {
+                Intent intent = new Intent(MainActivity.this, GPSActivity.class);
+                startActivity(intent);
+            }
+        });
+    }
+}