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<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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">
    <ImageView
        android:id="@+id/img_no_data"
        android:layout_width="0dp"
        android:layout_height="46dp"
        android:visibility="visible"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintVertical_bias="0.2"
        android:scaleType="fitCenter"
        android:src="@drawable/ic_announcement_black_24dp"
        android:tint="@color/secondary_text"/>
 
    <TextView
        android:id="@+id/tv_no_data"
        app:layout_constraintTop_toBottomOf="@id/img_no_data"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="加载失败, 下拉刷新重试"
        android:gravity="center"
        android:textColor="@color/gray"
        android:visibility="visible"/>
</android.support.constraint.ConstraintLayout>