android - 圆形进度条作为Glide占位符

我正在滑动显示服务器中的图像。
我想显示一个圆形进度条作为占位符。我从progress-bar-while-loading-image-using-glide尝试了此方法，但是它不起作用。
我想念什么？

我正在活动中显示recyclerview。当用户单击onItem时，图像在包含Viewpager的片段中打开。我正在使用滑行将图像加载到viewpager中。

转接器类别-

public class MyViewPagerAdapter extends PagerAdapter {
private ArrayList<Object> imagesList = new ArrayList<>();
public MyViewPagerAdapter(ArrayList<Object> images) {
    this.imagesList = images;
}

@NonNull
@SuppressLint("ClickableViewAccessibility")
@Override
public Object instantiateItem(@NonNull final ViewGroup container, int position) {
    Object recyclerViewItem = imagesList.get(position);
    final View view = LayoutInflater.from(container.getContext()).inflate(R.layout.util_image_fullscreen_preview, container, false);
    final TouchImageView imageViewPreview = view.findViewById(R.id.image_preview);
   CircularProgressDrawable circularProgressDrawable =
                new CircularProgressDrawable(container.getContext());
circularProgressDrawable.start();

        Photos image = (Photos) imagesList.get(position);
        GlideApp
            .with(container.getContext())
            .asBitmap()
            .load(advertiser.getUrl())
            .placeholder(circularProgressDrawable)
            .fitCenter().diskCacheStrategy(DiskCacheStrategy.ALL)
            .into(imageViewPreview);


    container.addView(view);
    return view;

}

@Override
public int getCount() {
    return imagesList.size();

}


@Override
public boolean isViewFromObject(View view, Object obj) {
    return view.equals(obj);
}


@Override
public void destroyItem(ViewGroup container, int position, Object object) {
    container.removeView((View) object);
}

}

最佳答案

尝试这种方式

在layout.xml中

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<ImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

<ProgressBar
    android:id="@+id/progrss"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true" />

</RelativeLayout>

现在您加载图片的位置，

prgress = (ProgressBar)findViewById(R.id.progress);
progress.setVisibility(View.VISIBLE);
Glide.with(mContext)
            .load(imageUrl)
            .diskCacheStrategy(DiskCacheStrategy.ALL)
            .into(new SimpleTarget<GlideDrawable>() {
                @Override
                public void onResourceReady(GlideDrawable resource, GlideAnimation<? super GlideDrawable> glideAnimation) {

                    progress.setVisibility(View.GONE);
                    imageViewPriview.setImageDrawable(resource);
                }

                @Override
                public void onLoadFailed(Exception e, Drawable errorDrawable) {
                     progress.setVisibility(View.GONE);
                }
            });