android stdio用约束布局 控件拖不动还全部挤在左上角

为什么我的安卓的约束布局一直拖不动

img

这段对应的代码

 <TextView
        android:id="@+id/msgsh"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="24dp"
        android:layout_marginEnd="8dp"
        android:text="TextView"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

design界面报了这个错，按提示还是没有改对
The following classes could not be found:
- android.support.constraint.ConstraintLayout (    Add constraint-layout library dependency to the project, Fix Build Path, Edit XML, Create Class)

这个依赖添加了嘛？

    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'