View inflate = LayoutInflater.from(context).inflate(R.layout.qrcode, null);
ImageView qrcode = (ImageView) inflate.findViewById(R.id.iv_qrcode);
ImageView guanbi = (ImageView) inflate.findViewById(R.id.iv_guanbi);
final Dialog dialog = new AlertDialog
        .Builder(context)
        .setView(inflate)
        .show();

dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent
 
);
Glide.with(context).load(list.get(position).getDwhat()).into(qrcode);
Animation animation = AnimationUtils.loadAnimation(context, R.anim.scale);
inflate.setAnimation(animation);
animation.start();

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

    <ImageViewandroid:id="@+id/iv_qrcode"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="@mipmap/ic_launcher" />

    <View
android:layout_width="match_parent"
 
android:layout_height="80dp"
android:background="#00000000" />

    <ImageViewandroid:id="@+id/iv_guanbi"
android:layout_width="40dp"
android:layout_height="40dp"
android:background="@android:color/transparent"
android:layout_gravity="center"
android:src="@drawable/guanbi" />

</LinearLayout>