I have been stuck on this problem adjusted the android:layout_height/width a lot, but I can't seem to see why it's not working. I looked up more questions like mine, but those don't seem to work for me.
XML:
<android.support.design.widget.CoordinatorLayout 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"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@drawable/gradient_background"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<ScrollView android:fillViewport="true"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:paddingTop="50dp">
<RelativeLayout 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_marginTop="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="nl.melvinsterk.android.medicatieapplicatie.TreatmentActivity"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/imageView2"
android:src="@drawable/been"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginBottom="20dp"
android:layout_above="@+id/imageView3"
android:layout_alignRight="@+id/lblDoctersNotes"
android:layout_alignEnd="@+id/lblDoctersNotes" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Proxycozynas"
android:id="@+id/tvTreatmentMedicine"
android:width="160dp"
android:layout_above="@+id/tvTreatmentRemainingDays"
android:layout_alignLeft="@+id/tvTreatmentRemainingDays"
android:layout_alignStart="@+id/tvTreatmentRemainingDays" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Nog maar X dagen"
android:id="@+id/tvTreatmentRemainingDays"
android:layout_alignBottom="@+id/imageView2"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginRight="30dp"
android:layout_marginEnd="48dp"
android:layout_marginBottom="77dp"
android:width="140dp"
android:layout_marginLeft="16dp" />
<View
style="@style/Divider"
android:id="@+id/viewSeperator"
android:layout_alignTop="@+id/imageView3"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:onClick="sideEffectsOnClick"
android:text="Last van bijwerkingen?"
android:id="@+id/lblSideEffects"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:textSize="20dp"
android:layout_alignRight="@+id/tvTreatmentRemainingDays"
android:layout_alignEnd="@+id/tvTreatmentRemainingDays" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/imageView3"
android:src="@mipmap/ic_next"
android:layout_centerVertical="true"
android:layout_alignRight="@+id/viewSeperator"
android:layout_alignEnd="@+id/viewSeperator"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true" />
<View
style="@style/Divider"
android:layout_marginTop="12dp"
android:id="@+id/viewSeperator2"
android:layout_below="@+id/lblSideEffects"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:onClick="howToOnClick"
android:text="Hoe neem ik mijn medicatie?"
android:id="@+id/tvHowToMedication"
android:layout_below="@+id/viewSeperator2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:textSize="20dp"
android:layout_alignRight="@+id/lblSideEffects"
android:layout_alignEnd="@+id/lblSideEffects" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/imageView6"
android:src="@mipmap/ic_next"
android:layout_below="@+id/viewSeperator2"
android:layout_above="@+id/viewSeperator4"
android:layout_centerInParent="true"
android:layout_toRightOf="@+id/tvHowToMedication"
android:layout_toEndOf="@+id/tvHowToMedication" />
<View
style="@style/Divider"
android:layout_marginTop="12dp"
android:id="@+id/viewSeperator4"
android:layout_below="@+id/tvHowToMedication"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Doktersnotitie"
android:id="@+id/lblDoctersNotes"
android:layout_below="@+id/viewSeperator4"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="12dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Doktersnotitie komt hier"
android:id="@+id/tvDoctorsnote"
android:layout_below="@+id/lblDoctersNotes"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:textSize="16dp" />
<View
style="@style/Divider"
android:id="@+id/viewSeperator3"
android:layout_marginTop="20dp"
android:layout_below="@+id/tvDoctorsnote"
android:layout_alignRight="@+id/imageView3"
android:layout_alignEnd="@+id/imageView3" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Gebruiksaanwijzing"
android:id="@+id/lblMedicineInstruction"
android:layout_below="@+id/viewSeperator3"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="12dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Medicijn instructies komen hier"
android:id="@+id/tvMedicineInstruction"
android:layout_below="@+id/lblMedicineInstruction"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:textSize="16dp" />
</RelativeLayout>
</ScrollView>
</android.support.design.widget.CoordinatorLayout>
You might want to try after adding the namespace xmlns:android="http://schemas.android.com/apk/res/android" to the ScrollView.