How to blur imageview in android

You can use glide transformations https://github.com/wasabeef/glide-transformations you can blur the image with one line of code

Glide.with(this).load(R.drawable.demo) .bitmapTransform(new BlurTransformation(context)) .into((ImageView) findViewById(R.id.image)); 

import android.renderscript.Allocation; import android.renderscript.Element; import android.renderscript.RenderScript; import android.renderscript.ScriptIntrinsicBlur; Bitmap blurred = blurRenderScript(this,yourBitmap, 25); //second parametre is radius yourImageView.setImageBitmap(blurred); @SuppressLint("NewApi") public static Bitmap blurRenderScript(Context context,Bitmap smallBitmap, int radius) { try { smallBitmap = RGB565toARGB888(smallBitmap); } catch (Exception e) { e.printStackTrace(); } Bitmap bitmap = Bitmap.createBitmap( smallBitmap.getWidth(), smallBitmap.getHeight(), Bitmap.Config.ARGB_8888); RenderScript renderScript = RenderScript.create(context); Allocation blurInput = Allocation.createFromBitmap(renderScript, smallBitmap); Allocation blurOutput = Allocation.createFromBitmap(renderScript, bitmap); ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(renderScript, Element.U8_4(renderScript)); blur.setInput(blurInput); blur.setRadius(radius); // radius must be 0 < r <= 25 blur.forEach(blurOutput); blurOutput.copyTo(bitmap); renderScript.destroy(); return bitmap; } private static Bitmap RGB565toARGB888(Bitmap img) throws Exception { int numPixels = img.getWidth() * img.getHeight(); int[] pixels = new int[numPixels]; //Get JPEG pixels. Each int is the color values for one pixel. img.getPixels(pixels, 0, img.getWidth(), 0, 0, img.getWidth(), img.getHeight()); //Create a Bitmap of the appropriate format. Bitmap result = Bitmap.createBitmap(img.getWidth(), img.getHeight(), Bitmap.Config.ARGB_8888); //Set RGB pixels. result.setPixels(pixels, 0, result.getWidth(), 0, 0, result.getWidth(), result.getHeight()); return result; } 

There are many libraries are available you can use any of these. I prefer Blurry library for it. it is very simple and optimized.

dependency:

 dependencies { compile 'jp.wasabeef:blurry:4.x.x' } 

Functions

• Blurry.with(context).radius(25).sampling(2).onto(rootView)
• // from View Blurry.with(context).capture(view).into(imageView)
• // from Bitmap Blurry.with(context).from(bitmap).into(imageView)

Blur Options

• Radius
• Down Sampling
• Color Filter
• Asynchronous Support
• Animation (Overlay Only)

Blurry.with(context) .radius(10) .sampling(8) .color(Color.argb(66, 255, 255, 0)) .async() .animate(500) .onto(rootView); 

Get a bitmap directly

// Sync val bitmap = Blurry.with(this) .radius(10) .sampling(8) .capture(findViewById(R.id.right_bottom)).get() imageView.setImageDrawable(BitmapDrawable(resources, bitmap)) // Async Blurry.with(this) .radius(25) .sampling(4) .color(Color.argb(66, 255, 255, 0)) .capture(findViewById(R.id.left_bottom)) .getAsync { imageView.setImageDrawable(BitmapDrawable(resources, it)) } 

Originally answered here

Android 12 Preview 1 comes with built-in blur feature. We need not depend on external library now. Here is the code

imageView.setRenderEffect( RenderEffect.createBlurEffect( 20.0f, 20.0f, SHADER_TITLE_MODE ) ) 

private Bitmap CreateBlurredImage (int radius) { // Load a clean bitmap and work from that Bitmap originalBitmap= BitmapFactory.DecodeResource(Resources,Resource.Drawable.dog_and_monkeys); // Create another bitmap that will hold the results of the filter. Bitmap blurredBitmap; blurredBitmap = Bitmap.CreateBitmap (originalBitmap); // Create the Renderscript instance that will do the work. RenderScript rs = RenderScript.Create (this); // Allocate memory for Renderscript to work with Allocation input = Allocation.CreateFromBitmap (rs, originalBitmap, Allocation.MipmapControl.MipmapFull, AllocationUsage.Script); Allocation output = Allocation.CreateTyped (rs, input.Type); // Load up an instance of the specific script that we want to use. ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create (rs, Element.U8_4 (rs)); script.SetInput (input); // Set the blur radius script.SetRadius (radius); // Start the ScriptIntrinisicBlur script.ForEach (output); // Copy the output to the blurred bitmap output.CopyTo (blurredBitmap); return blurredBitmap; 

}

protected override void OnCreate (Bundle bundle) { base.OnCreate (bundle); SetContentView (Resource.Layout.Main); _imageView = FindViewById<ImageView> (Resource.Id.originalImageView); _seekbar = FindViewById<SeekBar> (Resource.Id.seekBar1); _seekbar.StopTrackingTouch += BlurImageHandler; 

}

private void BlurImageHandler (object sender, SeekBar.StopTrackingTouchEventArgs e) { int radius = e.SeekBar.Progress; if (radius == 0) { // We don't want to blur, so just load the un-altered image. _imageView.SetImageResource (Resource.Drawable.dog_and_monkeys); } else { DisplayBlurredImage (radius); } 

}

private void DisplayBlurredImage (int radius) { _seekbar.StopTrackingTouch -= BlurImageHandler; _seekbar.Enabled = false; ShowIndeterminateProgressDialog (); Task.Factory.StartNew (() => { Bitmap bmp = CreateBlurredImage (radius); return bmp; }) .ContinueWith (task => { Bitmap bmp = task.Result; _imageView.SetImageBitmap (bmp); _seekbar.StopTrackingTouch += BlurImageHandler; _seekbar.Enabled = true; DismissIndeterminateProgressDialog (); }, TaskScheduler.FromCurrentSynchronizationContext ()); 

}

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <SeekBar android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/seekBar1" android:max="25" /> <ImageView android:src="@drawable/dog_and_monkeys" android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/originalImageView" /> </LinearLayout> 

click here deatiled code example

Just simply use this library https://github.com/ChathuraHettiarachchi/BlurIM , I was having problem with BlurTransformation class had errors thats why couldn't use Glide transformation but this works fine.

BlurImage.withContext(this) .blurFromResource(R.drawable.YOUR_RESOURCE) .into(imageView); 

You can use RenderScript to accomblish that as explained here or you can use the stackblur library to make a blurring effect in your image.

Usage of the stackblur library:

int resourceId = getResources().getIdentifier("imagename", "drawable", "mypackage"); // get bitmap from resource id Bitmap bitmap = BitmapFactory.decodeResource(getResources(), resourceId); StackBlurManager stackBlurManager = new StackBlurManager(bitmap); // process the image using a certain radius stackBlurManager.process(progress*4); // obtain the image and load it into an ImageView or any other component imgLock.setImageBitmap(stackBlurManager.returnBlurredImage()); 

There's the library that can use RenderScript so a blurring is blazingly fast and super easy to use:

<ru.egslava.blurredview.BlurredImageView ... android:src="@drawable/..." app:radius="0.3" app:keepOriginal="true" app:downSampling="2" /> 

Add dependencies

compile 'jp.wasabeef:fresco-processors:2.1.0' 

Use following code in layout file:

<com.facebook.drawee.view.SimpleDraweeView android:id="@+id/imageView" android:layout_width="match_parent" android:layout_height="match_parent"/> 

Use following code in your java file:

SimpleDraweeView imgView = (SimpleDraweeView) findViewById(R.id.imageView); ImageRequest request = ImageRequestBuilder.newBuilderWithSource(uri) .setPostprocessor(new IterativeBoxBlurPostProcessor(20)) .build(); DraweeController controller = Fresco.newDraweeControllerBuilder() .setImageRequest(request) .setOldController(imgView.getController()) .build(); imgView.setController(controller); 

Late here but I got an error trying to use bitmaptransfrom directly after load. If you are facing the same, use:

Glide.with(mContext).load(drawable).apply(RequestOptions.bitmapTransform(new BlurTransformation())).into(imageView); 

If you are using jetpack compose and you want blurry image use Modifier .blur(radius = 10.dp) like this :

 Image( painter = painterResource(R.drawable.Your_Image), contentDescription = "", modifier = Modifier .blur(radius = 10.dp) ) 

There are different ways to make view blur in android, But i found the easiest and fastest way to make views blur using Fresco library.

Add following dependency inside your build.gradle of your module.

 compile 'jp.wasabeef:fresco-processors:2.1.0' 

And inside onCreate() of Activity.

 Fresco.initialize(this); setContentView(R.layout.activity_main); SimpleDraweeView simpleDraweeView = (SimpleDraweeView) findViewById(R.id.sdv_image); //INSTANTIATE BLUR POST PROCESSOR Postprocessor postprocessor = new BlurPostprocessor(this, BLUR_PRECENTAGE); //INSTATNTING IMAGE REQUEST USING POST PROCESSOR AS PARAMETER ImageRequest imageRequest = ImageRequestBuilder.newBuilderWithSource(Uri.parse(IMAGE_URL)) .setPostprocessor(postprocessor) .build(); //INSTANTATE CONTROLLOR() PipelineDraweeController controller = (PipelineDraweeController) Fresco.newDraweeControllerBuilder() .setImageRequest(imageRequest) .setOldController(simpleDraweeView.getController()) .build(); //LOAD BLURRED IMAGE ON SimpleDraweeView(VIEW) simpleDraweeView.setController(controller); 

If you need complete implementation please visit this blog Fastest Image Blur in Android Using Fresco.

You can also blur an ImageView by using Coil library.

image.load("http://xxx.jpg") { transformations(BlurTransformation(applicationContext,20f)) }