Getting Drawable

Question

I am using glide and once the image is retrieved it is put into a view, the view is extended and I use the below code in the constructor. The code returns null. Is there a way to wait until it returns the drawable? It works in the listeners and that's why I am asking if there's a way to wait so it can be in the constructors.

Code:

Glide:

Glide
        .with(activity).asBitmap()
        .load(imageURL)
        .into(new SimpleTarget<Bitmap>(currentMap.getWidth(), currentMap.getHeight()) {
            @Override
            public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {

                currentMap.setUpMap()
                });

            }

Drawable in view:

drawable = this.getDrawable();

Error:

java.lang.NullPointerException: Attempt to invoke virtual method 'int android.graphics.drawable.Drawable.getIntrinsicWidth()' on a null object reference

Possible duplicate of [What is a NullPointerException, and how do I fix it?](https://stackoverflow.com/questions/218384/what-is-a-nullpointerexception-and-how-do-i-fix-it) — f1sh, Mar 01 '18 at 20:04
Where are you using "drawable = this.getDrawable();" based on what you are doing, it is setting a BitMap, not a Drawable. — Eugene H, Mar 01 '18 at 20:15
I use the drawable in the currentmap object that extends a view. — Darren, Mar 01 '18 at 20:19

score 0 · Accepted Answer · answered Mar 01 '18 at 22:50

Use a RequestListener<String, GlideDrawable> that gives you a drawable:

(GlideDrawable is also a Drawable).

Glide.with(activity)
    .load("...")
    .listener(object : RequestListener<String, GlideDrawable> {
        override fun onResourceReady(resource: GlideDrawable?, model: String?, target: Target<GlideDrawable>?, isFromMemoryCache: Boolean, isFirstResource: Boolean): Boolean {

            // GlideDrawable extends Drawable :)
        }

        override fun onException(e: Exception?, model: String?, target: Target<GlideDrawable>?, isFirstResource: Boolean): Boolean = false
    })

You will need to remove the asBitmap() call. My code is kotlin because I copy-pasted it from my project, but I believe you can understand it.

Getting Drawable

1 Answers1