Mohamed13
Lurker
The error message saying "AAPT: error: 'matchmaker' is incompatible with attribute layout_constraintTop_toTopOf (attr) reference|enum [parent=0]. How to fix it?
Java:
<?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:id="@+id/circularRevealFrameLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/imageView"
android:layout_width="411dp"
android:layout_height="672dp"
android:background="@drawable/blue_background"
android:contentDescription="@string/todo"
app:layout_constraintEnd_toEndOf="matchmaker"
app:layout_constraintTop_toTopOf="matchmaker" />
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:gravity="center_horizontal"
android:text="which colour is in the background"
android:textAlignment="center"
android:textSize="15pt"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="HardcodedText,MissingConstraints" />
<Button
android:id="@+id/choice1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="132dp"
android:background="#0091EA"
android:padding="2dp"
android:text="Blue"
android:textColor="#FFF"
android:textSize="40sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/imageView"
app:layout_constraintVertical_bias="0.838"
tools:ignore="HardcodedText"/>
<Button
android:id="@+id/choice2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="124dp"
android:background="#0091EA"
android:padding="1dp"
android:text="Red"
android:textColor="#FFF"
android:textSize="45sp"
app:layout_constraintBottom_toBottomOf="matchmaker"
app:layout_constraintEnd_toEndOf="matchmaker"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/choice3"
android:layout_width="112dp"
android:layout_height="0dp"
android:layout_marginEnd="16dp"
android:background="#0091EA"
android:padding="1dp"
android:text="@string/green"
android:textColor="#FFF"
android:textSize="45sp"
app:layout_constraintEnd_toEndOf="matchmaker"
app:layout_constraintTop_toBottomOf="matchmaker"
tools:ignore="MissingConstraints" />
</androidx.constraintlayout.widget.ConstraintLayout>
