Add back button for sign in and sign up screen

app/src/main/java/com/capstone/foodify/MainActivity.java

@@ -25,8 +25,6 @@ public class MainActivity extends AppCompatActivity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
-        Objects.requireNonNull(getSupportActionBar()).hide();
-
         bottomNavigationView = findViewById(R.id.bottom_nav);
         viewPager2 = findViewById(R.id.viewPager);
         viewPagerAdapter = new ViewPagerAdapter(this);

app/src/main/java/com/capstone/foodify/SignInActivity.java

@@ -4,6 +4,7 @@ import android.content.Intent;
 import android.os.Bundle;
 import android.view.MenuItem;
 import android.view.View;
+import android.widget.ImageView;
 import android.widget.TextView;
 
 import androidx.annotation.NonNull;
@@ -15,18 +16,23 @@ import java.util.Objects;
 public class SignInActivity extends AppCompatActivity {
 
     TextView signUp_textView;
+
+    ImageView back_image;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_sign_in);
 
-        // calling the action bar
-        ActionBar actionBar = getSupportActionBar();
-        Objects.requireNonNull(actionBar).setDisplayShowTitleEnabled(false);
-        // showing the back button in action bar
-        Objects.requireNonNull(actionBar).setDisplayHomeAsUpEnabled(true);
-
         signUp_textView = (TextView) findViewById(R.id.sign_up_textView);
+
+        back_image = (ImageView) findViewById(R.id.back_image);
+
+        back_image.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                onBackPressed();
+            }
+        });
         signUp_textView.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {

app/src/main/java/com/capstone/foodify/SignUpActivity.java

@@ -12,6 +12,7 @@ import android.view.ViewGroup;
 import android.widget.ArrayAdapter;
 import android.widget.DatePicker;
 import android.widget.EditText;
+import android.widget.ImageView;
 import android.widget.Spinner;
 import android.widget.TextView;
 
@@ -30,9 +31,9 @@ public class SignUpActivity extends AppCompatActivity {
             textInput_address, textInput_repeatPassword, textInput_firstName, textInput_lastName, textInput_birthDay;
     final Calendar myCalendar= Calendar.getInstance();
     EditText editText, edt_birthday;
-
     TextView signIn_textView;
     Spinner wardSpinner, districtSpinner;
+    ImageView back_image;
 
 
     @Override
@@ -52,9 +53,14 @@ public class SignUpActivity extends AppCompatActivity {
             }
         });
 
-        // enabling action bar app icon and behaving it as toggle button
-        Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
-        getSupportActionBar().setHomeButtonEnabled(true);
+        back_image = (ImageView) findViewById(R.id.back_image);
+
+        back_image.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                onBackPressed();
+            }
+        });
     }
 
 

app/src/main/java/com/capstone/foodify/SplashScreenActivity.java

@@ -23,7 +23,5 @@ public class SplashScreenActivity extends AppCompatActivity {
                 finish();
             }
         }, 3000);
-
-        Objects.requireNonNull(getSupportActionBar()).hide();
     }
 }