how to apply a filter to an imageView

Question

I have an imageView and want to apply a filter so that it becomes blurred, I use android studio and the version min of sdk is 17, help me to achieve this task

what type of filter you are looking for ?? Do you tried with wrap content and fitxy ? — Sree, Nov 06 '15 at 09:55

score 0 · Answer 1 · answered Nov 06 '15 at 10:06

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I think you can use setAlpha() method.

Like imageView.setAlpha(floatValue);

"floatValue" ranges from 0 to 1.

Try values below 1 for your purpose.

answered Nov 06 '15 at 10:06

John.B

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score 0 · Answer 2 · edited May 23 '17 at 12:07

Read about/Google "Convolution Filters", it's a method of changing a pixels value based on the values of pixels around it. So apart from blurring, you can also do image sharpening and line-finding.

How do I blur an image?

If your question is how to blur so you can use that

imageview = (ImageView) itemView.findViewById(R.id.imageView);

BitmapDrawable drawable = (BitmapDrawable) imageview.getDrawable();
Bitmap bitmap = drawable.getBitmap();
Bitmap blurred = blurRenderScript(bitmap, radiusArr[position]);//second parametre is radius
imageview.setImageBitmap(blurred);

for more reference you can refer this url https://github.com/Cutta/Simple-Image-Blur

score 0 · Accepted Answer · answered Nov 06 '15 at 10:13

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Use Picasso - Square library

And apply the Picasso Blur Transformation

This is easier than trying to re-invent the wheel.

answered Nov 06 '15 at 10:13

Viral Patel

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how to apply a filter to an imageView

3 Answers3