Android Practical Diploma

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     tools:context=".Main16Activity"     android:orientation="vertical"     android:background="#fff"> <ImageView     android:layout_marginTop="100dp"     android:layout_gravity="center_horizontal"     android:layout_width="100dp"     android:layout_height="100dp"     android:src="@drawable/pinterest"     />     <TextView         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Welcome to Pinterest"         android:textSize="40dp"         android:textColor="#000"         android:textStyle=&q

  <?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=".Main14Activity">     <TextView        android:layout_width="wrap_content"      android:layout_height="wrap_content"         android:layout_marginStart="44dp"         android:layout_marginLeft="44dp"      android:layout_marginBottom="104dp"         android:fontFamily="cursive"         android:text="Subjects"         android:textColor="#000"         android:textSize="100dp" app:layout_constraintBottom_toTopOf="@+id/autoCompleteTextView"        app:l

  Xml file <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"  xmlns:app="http://schemas.android.com/apk/res-auto"     tools:context=".Main13Activity"     android:background="#fff">     <ImageView         android:id="@+id/googleimg"         android:layout_marginLeft="50dp"         android:layout_width="300dp"        android:layout_height="wrap_content"         android:src="@drawable/google"         android:layout_marginTop="100dp"         />     <AutoCompleteTextView       android:id="@+id/autoCompleteTextView"         android:layout_width="370dp"         android:layout_height="40dp"         android:l