Original problem of menu item's not opening activity was solved by removing all the XML code incide ConstraintLayout. I added NavigationDrawer after creating all the stuff inside ConstraintLayout. How can i make both NavigationDrawer and my own stuff work together?
<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout 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:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/main_screen_image"
android:fitsSystemWindows="true"
tools:context=".HomeScreen"
tools:openDrawer="start">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@color/purple_200"
android:elevation="4dp"
android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
<!--Dark text
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"-->
<!-- Container for fragments-->
<!--<FrameLayout
android:id="@+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent" />-->
</LinearLayout>
<com.google.android.material.navigation.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="@layout/nav_header"
app:menu="@menu/drawer_menu" />
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="20dp">
<ImageView
android:id="@+id/homeScreenLogo"
android:layout_width="160dp"
android:layout_height="160dp"
android:layout_gravity="center"
android:src="@drawable/kaznau_logo"
app:layout_constraintBottom_toTopOf="@+id/guideline6"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.498"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<LinearLayout
android:id="@+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="50dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.4"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/guideline6">
<com.google.android.material.button.MaterialButton
android:id="@+id/btnAboutUniversity"
android:layout_width="160dp"
android:layout_height="50dp"
android:drawableLeft="@drawable/ic_university"
android:text="@string/s_about_kaznau"
app:cornerRadius="5dp" />
<View
android:layout_width="0dp"
android:layout_height="20dp"
android:layout_weight="1" />
<com.google.android.material.button.MaterialButton
android:id="@+id/btnFaculties"
android:layout_width="160dp"
android:layout_height="50dp"
android:drawableLeft="@drawable/ic_faculty"
android:text="@string/s_faculty"
app:cornerRadius="5dp" />
</LinearLayout>
<LinearLayout
android:id="@+id/linearLayout2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/linearLayout">
<com.google.android.material.button.MaterialButton
android:id="@+id/btnNews"
android:layout_width="160dp"
android:layout_height="50dp"
android:drawableLeft="@drawable/ic_baseline_article_24"
android:text="@string/s_news"
app:cornerRadius="5dp" />
<View
android:layout_width="0dp"
android:layout_height="20dp"
android:layout_weight="1" />
<com.google.android.material.button.MaterialButton
android:id="@+id/btnEvents"
android:layout_width="160dp"
android:layout_height="50dp"
android:drawableLeft="@drawable/ic_baseline_event_24"
android:text="@string/events_name"
app:cornerRadius="5dp" />
</LinearLayout>
<LinearLayout
android:id="@+id/linearLayout3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/linearLayout2">
<com.google.android.material.button.MaterialButton
android:id="@+id/btnLocations"
android:layout_width="160dp"
android:layout_height="50dp"
android:drawableLeft="@drawable/ic_location"
android:text="@string/s_locations"
app:cornerRadius="5dp" />
<View
android:layout_width="0dp"
android:layout_height="20dp"
android:layout_weight="1" />
<com.google.android.material.button.MaterialButton
android:id="@+id/btnCampus"
android:layout_width="160dp"
android:layout_height="50dp"
android:drawableLeft="@drawable/ic_campus"
android:text="@string/s_campus"
app:cornerRadius="5dp" />
</LinearLayout>
<LinearLayout
android:id="@+id/linearLayout4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/linearLayout3">
<com.google.android.material.button.MaterialButton
android:id="@+id/btnLinks"
android:layout_width="160dp"
android:layout_height="50dp"
android:drawableLeft="@drawable/ic_links"
android:text="@string/s_links"
app:cornerRadius="5dp" />
<View
android:layout_width="0dp"
android:layout_height="20dp"
android:layout_weight="1" />
<com.google.android.material.button.MaterialButton
android:id="@+id/btnContacts"
android:layout_width="160dp"
android:layout_height="50dp"
android:drawableLeft="@drawable/ic_contacts"
android:text="@string/s_contacs"
app:cornerRadius="5dp" />
</LinearLayout>
<com.google.android.material.button.MaterialButton
android:id="@+id/btnAgrodamu"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_gravity="center"
android:text="@string/s_agrodamu"
app:cornerRadius="5dp"
app:layout_constraintBottom_toTopOf="@+id/guideline7"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.555"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/linearLayout4"
app:layout_constraintVertical_bias="0.164" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_begin="20dp"
app:layout_constraintGuide_percent="0.4" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_begin="20dp"
app:layout_constraintGuide_percent="0.9" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.drawerlayout.widget.DrawerLayout>
I would be appreciated if you can also tell me how to make my XML code more clean, without losing the functionality and look of it. Thanks
