BlurView

Dynamic iOS-like blur of underlying Views for Android. Includes library and small example project.

BlurView can be used as a regular FrameLayout. It blurs its underlying content and draws it as a background for its children. BlurView redraws its blurred content when changes in view hierarchy are detected (draw() called). It honors its position and size changes, including view animation and property animation.

How to use:

  <eightbitlab.com.blurview.BlurView
      android:id="@+id/blurView"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      app:overlayColor="@color/colorOverlay">

       <!--Any child View here, TabLayout for example-->

  </eightbitlab.com.blurview.BlurView>

    final int radius = 16;
    final float scaleFactor = DefaultBlurController.DEFAULT_SCALE_FACTOR;

    final View decorView = getWindow().getDecorView();
    //Activity's root View. Can also be root View of your layout
    final View rootView = decorView.findViewById(android.R.id.content); 
    final Drawable windowBackground = decorView.getBackground();

    final DefaultBlurController blurController = new DefaultBlurController(blurView, rootView, scaleFactor);
    //set background, if your root layout doesn't have one
    blurController.setWindowBackground(windowBackground);
    //Preferable algorithm, needs RenderScript support mode enabled
    blurController.setBlurAlgorithm(new RenderScriptBlur(this, true));
    blurController.setBlurRadius(radius);

    blurView.setBlurController(blurController);

Enable RenderScript support mode:

 defaultConfig {
        renderscriptTargetApi 19
        renderscriptSupportModeEnabled true
  }

Perfomance

It takes 1-4ms on Nexus 5 and Nexus 4 to draw BlurView with the setup given in example project