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blur-layout

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README.MD

BlurLayout

FrameLayout extension to support blurred semitransparent backgrounds in Android.

rocks example fruits example

Motivation

There's no default support in Android for blurring views' semitransparent backgrounds taking into account all the layers behind the blurred background (which is frequently used in such design patterns as glassmorphism).

BlurLayout is what solves this issue.

Get started

Add Dependency

implementation("com.avito.android:blur-layout:1.1.1")

Initialize library

Initialize layout in

Application.onCreate()
providing a transformer function to apply blur effect on a bitmap that will be passed to the transformer from the BlurLayout. External blur applier is used as there are several existing methods to apply blur effect to a bitmap – so you can choose the one that better fits your needs. The one that is used in this demo and in Avito itself is Google's official library renderscript-toolkit.

BlurLayout.init(
onApplyBlur = { bitmap, blurRadius ->
Toolkit.blur(inputBitmap = bitmap, radius = blurRadius)
},
)

Use via XML

  1. Wrap all the elements that should be taken into account while blurring view's semitransparent background with

    <com.avito.android.blurlayout.BlurLayout />
    .

  2. Specify

    BlurLayout
    parameters.

    <!--id of the blurred background target. Might be omitted when there's single child.--> app:blurLayout_targetChildId="..." <!--Might be omitted if target view implements BlurLayout.BlurRadiusProvider.--> app:blurLayout_blurRadius="..." <!--Optional parameter to apply rounded corners to the blurred background. Might be omitted if target view implements `BlurLayout.CornerRadiusProvider`--> app:blurLayout_targetChildBackgroundCornerRadius="..."
  3. Specify target view's background. E.g.

    android:background="#80FFFFFF"
    .

Single child example

<com.avito.android.blurlayout.BlurLayout
android:background="@drawable/background_rocks"
app:blurLayout_blurRadius="25"
app:blurLayout_targetChildBackgroundCornerRadius="16dp">
<View android:background="#80FFFFFF" />
</com.avito.android.blurlayout.BlurLayout>

For the full example refer to layout_example_rocks.xml

Multiple children example

<com.avito.android.blurlayout.BlurLayout
android:background="@drawable/background_gradient"
app:blurLayout_blurRadius="25"
app:blurLayout_targetChildBackgroundCornerRadius="16dp"
app:blurLayout_targetChildId="@id/blurred_background_view">
<ImageView android:src="@drawable/ic_apple" />
<ImageView
android:id="@+id/blurred_background_view"
android:background="#80FFFFFF"
app:srcCompat="@drawable/ic_avito_logo" />
<ImageView android:src="@drawable/ic_strawberry" />
</com.avito.android.blurlayout.BlurLayout>

For the full example refer to layout_example_fruits.xml

Use via code

BlurLayout(context = this).apply {
// add children
}.setBlurredBackgroundForTargetChild(
targetChild = TODO("Might be omitted if single child"),
blurRadius = TODO(
"Might be omitted if target view implements BlurLayout.BlurRadiusProvider"
),
targetChildBackgroundCornerRadius = TODO(
"Might be omitted if target view implements BlurLayout.CornerRadiusProvider"
)
)

Описание

Support for blurred semitransparent backgrounds in Android

Языки

Assembly

  • CMake
  • Kotlin
  • Shell
  • C++
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