Android: Use image from ImageView in blur example

[m1ga]

Instead of creating an empty Bitmap we will use the image provided by the ImageView to add a blur and paint:

[jquick-axway]

Sorry for the late 2 year response.

I agree, the example should blur an image. That would be a more practical example. PR #86 will do this... plus that PR will make the example work more like iOS by showing a Blur/Unblur button so that the end-user can see a before/after image example.

I'm going to close this PR in favor of the other PR.
#86