Add support to Ion?

[RobotAmiee]

I now can't get CircularImageView to work with Ion(https://github.com/koush/ion). Can you take a look and add support to it?

[rinav]

I am having a similar issue here is the stack trace...
can you give some pointers so that we can try to fix it

I am using ListView, which as this ImageView where I am trying to circle the Image

java.lang.NullPointerException
        at android.graphics.Bitmap.createScaledBitmap(Bitmap.java:590)
        at com.pkmmte.view.CircularImageView.refreshBitmapShader(CircularImageView.java:341)
        at com.pkmmte.view.CircularImageView.invalidate(CircularImageView.java:262)
        at android.widget.ImageView.setImageDrawable(ImageView.java:424)
        at com.koushikdutta.ion.IonDrawable$IonDrawableCallback.onCompleted(IonDrawable.java:140)
        at com.koushikdutta.ion.IonDrawable$IonDrawableCallback.onCompleted(IonDrawable.java:111)
        at com.koushikdutta.ion.BitmapCallback$1.run(BitmapCallback.java:56)
        at com.koushikdutta.async.AsyncServer$RunnableWrapper.run(AsyncServer.java:53)
        at android.os.Handler.handleCallback(Handler.java:733)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:136)
        at android.app.ActivityThread.main(ActivityThread.java:5034)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:731)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:565)
        at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:132)
        at dalvik.system.NativeStart.main(Native Method)

[Pkmmte]

You should be able to make a custom Transformation for Ion just as with the Picasso sample.
Unfortunately, I wasn't able to get that to work. My solution for this would be to use the Ion.with(context).load(url).asBitmap() API with a callback to set the image.

I provided some sample code for this in the latest commit.
Meanwhile, I'll continue searching for a better solution to this and see if I find any.