| <?xml version="1.0" encoding="utf-8"?> | 
| <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" | 
|     android:layout_width="match_parent" | 
|     android:layout_height="match_parent" | 
|     xmlns:app="http://schemas.android.com/apk/res-auto" | 
|     android:layout_gravity="center" | 
|     > | 
|   | 
|     <androidx.constraintlayout.widget.ConstraintLayout | 
|         android:layout_width="wrap_content" | 
|         android:layout_height="wrap_content" | 
|         xmlns:app="http://schemas.android.com/apk/res-auto" | 
|         android:layout_gravity="center" | 
|         android:background="@drawable/progress_bg" | 
|         android:padding="30dp" | 
|         app:layout_constraintTop_toTopOf="parent" | 
|         app:layout_constraintBottom_toBottomOf="parent" | 
|         app:layout_constraintStart_toStartOf="parent" | 
|         app:layout_constraintEnd_toEndOf="parent"> | 
|   | 
|         <ImageView | 
|             android:id="@+id/loading_image" | 
|             android:layout_width="50dp" | 
|             android:layout_height="50dp" | 
|             android:src="@anim/loading_style" | 
|             app:layout_constraintTop_toTopOf="parent" | 
|             app:layout_constraintStart_toStartOf="parent" | 
|             app:layout_constraintEnd_toEndOf="parent" | 
|             /> | 
|   | 
|         <TextView | 
|             android:id="@+id/loading_tips" | 
|             android:layout_width="wrap_content" | 
|             android:layout_height="wrap_content" | 
|             android:layout_marginTop="20dp" | 
|             android:text="@string/loading" | 
|             android:textColor="#FFFFFF" | 
|             android:textSize="24sp" | 
|             android:gravity="center" | 
|             app:layout_constraintTop_toBottomOf="@+id/loading_image" | 
|             app:layout_constraintStart_toStartOf="parent" | 
|             app:layout_constraintEnd_toEndOf="parent" | 
|             /> | 
|   | 
|     </androidx.constraintlayout.widget.ConstraintLayout> | 
|   | 
|   | 
|   | 
| </androidx.constraintlayout.widget.ConstraintLayout> |