Class Index

An animation listener receives notifications from an animation. 

• Allows dynamic tint of its background via the background tint methods in ViewCompat. 

• Allows dynamic tint of its background via the background tint methods in ViewCompat. 

• Allows dynamic tint of its background via the background tint methods in CompoundButtonCompat. 

• Allows dynamic tint of its background via the background tint methods in ViewCompat. 

• Allows dynamic tint of its background via the background tint methods in ViewCompat. 

• Allows dynamic tint of its background via the background tint methods in ViewCompat. 

• Supports R.attr.textAllCaps style attribute which works back to Gingerbread. 

• Allows dynamic tint of its background via the background tint methods in CompoundButtonCompat. 

• Allows dynamic tint of its background via the background tint methods in ViewCompat. 

• Allows dynamic tint of its background via the background tint methods in ViewCompat. 

• Allows setting of the font family using R.attr.fontFamily

This will automatically be used when you use ToggleButton in your layouts. 

Helper class for inflating layouts asynchronously. 

Denotes that the annotated element represents a packed color long. 

When writing a custom view, implement this interface to return the default behavior when used as a direct child of an CoordinatorLayout. 

Fling animation is an animation that continues an initial momentum (most often from gesture velocity) and gradually slows down. 

FloatPropertyCompat is an abstraction that can be used to represent a mutable float value that is held in a host object. 

Example:

  @FloatRange(from=0.0,to=1.0)
  public float getAlpha() {
      ... 
              
    

            

FloatValueHolder holds a float value. 

Lifecycle within RecyclerView:

• RecyclerView.ViewHolder initially an empty FrameLayout, serves as a re-usable container for a Fragment in later stages. 

Denotes that the annotated element represents a half-precision floating point value. 

A provider for this factory will be installed in the ApplicationComponent. 

Example:

  @IntRange(from=0,to=255)
  public int getAlpha() {
      ... 
              
    

            

The following sample code shows a simple leanback preference fragment that is populated from a resource. 

Helper class to add Android Auto extensions to notifications. 

 <androidx.constraintlayout.widget.ConstraintLayout
         xmlns:android="http://schemas.android.com/apk/res/android"
         xmlns:app="http://schemas.android.com/apk/res-auto"
         android:layout_width="match_parent"
         android:layout_height="match_parent">

     <androidx.constraintlayout.widget.Guideline
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:id="@+id/left_guideline"
         app:layout_constraintGuide_percent=".15"
         android:orientation="vertical"/>

     <androidx.constraintlayout.widget.Guideline
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:id="@+id/right_guideline"
         app:layout_constraintGuide_percent=".85"
         android:orientation="vertical"/>

     <androidx.constraintlayout.widget.Guideline
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:id="@+id/top_guideline"
         app:layout_constraintGuide_percent=".15"
         android:orientation="horizontal"/>

     <androidx.constraintlayout.widget.Guideline
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:id="@+id/bottom_guideline"
         app:layout_constraintGuide_percent=".85"
         android:orientation="horizontal"/>

     <Button
         android:text="Button"
         android:layout_width="0dp"
         android:layout_height="0dp"
         android:id="@+id/button"
         app:layout_constraintLeft_toLeftOf="@+id/left_guideline"
         app:layout_constraintRight_toRightOf="@+id/right_guideline"
         app:layout_constraintTop_toTopOf="@+id/top_guideline"
         app:layout_constraintBottom_toBottomOf="@+id/bottom_guideline" />

 </androidx.constraintlayout.widget.ConstraintLayout>
 
              
    

            

Helper class to add content info extensions to notifications. 

Adapters provide a binding from an app-specific data set to views that are displayed within a RecyclerView. 

Contains useful information about the current RecyclerView state like target scroll position or view focus. 

A widget that draws a search affordance, represented by a round background and an icon.