<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="wrap_content"> <com.lsjwzh.widget.materialloadingprogressbar.CircleProgressBar android:id="@+id/comment_progress_bar_item_load_comments" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margin="16dp" app:mlpb_progress_stoke_width="3dp" app:mlpb_progress_color="?attr/colorAccent" android:layout_gravity="center_horizontal"/> </LinearLayout>