fresco docs have a problem? 'hierarchy.setPlaceholderImage(R.drawable.placeholderId);' can't find it about fresco

[tyronen]

It is in the GenericDraweeHierarchy class.

[plamenko]

mSimpleDraweeView.getHierarchy().setPlaceholderImage(...)

[blackiedm]

ok!I use GenericDraweeHierarchyBuilder and just find this method setPlaceholderImage(Drawable).

[plamenko]

You can specify the placeholder image while building hierarchy:

GenericDraweeHierarchy hierarchy = new GenericDraweeHierarchyBuilder(resources)
    .setPlaceholderImage(...)
    .build()
mDraweeView.setHierarchy(hierarchy);

But, you can also change the placeholder view of the existing hierarchy:

hierarchy.setPlaceholderImage(...);
OR
mDraweeView.getHierarchy().setPlaceholderImage(...);

Note: I suggest that you always use SimpleDraweeView. However, if you are using DraweeView, rather than SimpleDraweeView, make sure that you parametrize your DraweeView.

DraweeView<GenericDraweeHierarchy>

otherwise getHierarchy() won't return GenericDraweeHierarchy, but a more restricted interface DraweeHierarchy. In that case you would have to cast.

 // don't do that, this is not safe. parametrize your view instead
 ((GenericDraweeHierarchy) mDraweeView.getHierarchy()).setPlaceholderImage(...)

[blackiedm]

@plamenko ok! I get it!