NullPointerException in RequestManagerRetriever.findAllSupportFragmentsWithViews

[tetsukay]

sorry, I am not good at English.

Glide Version: 4.0.0 RC0

Integration libraries: okhttp3-integration 4.0.0 RC0

Device/Android Version: Android 5.1

Issue details / Repro steps / Use case background:
NullPointerException in RequestManagerRetriever.findAllSupportFragmentsWithViews() in Glide.with(View)

in findAllSupportFragmentsWithViews() , topLevelFragments Collection is not null and not empty too.
but, topLevelFragments have null, so NullPointerException in for-each.

I received crash reporting, but I could not reproduction.
I think that will occur when called Glide.with after view is destroyed.
But, I tried block after onDetachedFromWindow, It did not improve.

Glide load line / GlideModule (if any) / list Adapter code (if any):

public void setImageUrl(@NonNull String url) {
  Glide.with(this).load(url).into(this); // "this" is ImageView instance
}

public void setImageUrl(@NonNull String url) {
  if (!isViewDestroyed) { // "true" after called onDetachedFromWindow
    Glide.with(this).load(url).into(this); // "this" is ImageView instance
  }
}

NPE occurred too.

Stack trace / LogCat:

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.support.v4.app.Fragment.getView()' on a null object reference
       at com.bumptech.glide.manager.RequestManagerRetriever.findAllSupportFragmentsWithViews(RequestManagerRetriever.java:189)
       at com.bumptech.glide.manager.RequestManagerRetriever.findSupportFragment(RequestManagerRetriever.java:200)
       at com.bumptech.glide.manager.RequestManagerRetriever.get(RequestManagerRetriever.java:167)
       at com.bumptech.glide.Glide.with(Glide.java:609)
       at com.example.views.ExImageView.setImageUrl(ExImageView.java:55)
       at ...

RequestManagerRetriever.java#189 fragment is null

Is it bug of glide? or Is my usage wrong?

[sjudd]

Looks like a bug in Glide. Great report, thanks!