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Added in API level 1

Summary: Methods | [Expand All]

Drawable.Callback

public static interface Drawable.Callback

android.graphics.drawable.Drawable.Callback

Known Indirect Subclasses

AbsListView, AbsSeekBar, AbsSpinner, AbsoluteLayout, ActionMenuView, AdapterView<T extends Adapter>, AdapterViewAnimator, AdapterViewFlipper, and 130 others.

AbsListView	Base class that can be used to implement virtualized lists of items.
AbsSeekBar
AbsSpinner	An abstract base class for spinner widgets.
AbsoluteLayout	This class was deprecated in API level 3. Use `FrameLayout`, `RelativeLayout` or a custom layout instead.
ActionMenuView	ActionMenuView is a presentation of a series of menu options as a View.
AdapterView<T extends Adapter>	An AdapterView is a view whose children are determined by an `Adapter`.
AdapterViewAnimator	Base class for a `AdapterView` that will perform animations when switching between its views.
AdapterViewFlipper	Simple `ViewAnimator` that will animate between two or more views that have been added to it.
AnalogClock	This class was deprecated in API level 23. This widget is no longer supported.
AnimatedStateListDrawable	Drawable containing a set of Drawable keyframes where the currently displayed keyframe is chosen based on the current state set.
AnimationDrawable	An object used to create frame-by-frame animations, defined by a series of Drawable objects, which can be used as a View object's background.
AppBarLayout	AppBarLayout is a vertical `LinearLayout` which implements many of the features of material designs app bar concept, namely scrolling gestures.
AppCompatAutoCompleteTextView	A `AutoCompleteTextView` which supports compatible features on older version of the platform, including: Supports `textAllCaps` style attribute which works back to `Eclair MR1`.
AppCompatButton	A `Button` which supports compatible features on older version of the platform, including: Supports `textAllCaps` style attribute which works back to `Eclair MR1`.
AppCompatCheckBox	A `CheckBox` which supports compatible features on older version of the platform, including: Allows dynamic tint of it background via the background tint methods in `CompoundButtonCompat`.
AppCompatCheckedTextView	A `CheckedTextView` which supports compatible features on older version of the platform.
AppCompatEditText	A `EditText` which supports compatible features on older version of the platform, including: Supports `textAllCaps` style attribute which works back to `Eclair MR1`.
AppCompatImageButton	A `ImageButton` which supports compatible features on older version of the platform, including: Allows dynamic tint of it background via the background tint methods in `ViewCompat`.
AppCompatImageView	A `ImageView` which supports compatible features on older version of the platform, including: Allows dynamic tint of it background via the background tint methods in `ViewCompat`.
AppCompatMultiAutoCompleteTextView	A `MultiAutoCompleteTextView` which supports compatible features on older version of the platform, including: Supports `textAllCaps` style attribute which works back to `Eclair MR1`.
AppCompatRadioButton	A `RadioButton` which supports compatible features on older version of the platform, including: Allows dynamic tint of it background via the background tint methods in `CompoundButtonCompat`.
AppCompatRatingBar	A `RatingBar` which supports compatible features on older version of the platform.
AppCompatSeekBar	A `SeekBar` which supports compatible features on older version of the platform.
AppCompatSpinner	A `Spinner` which supports compatible features on older versions of the platform, including: Dynamic tinting of the background via the background tint methods in `ViewCompat`.
AppCompatTextView	A `TextView` which supports compatible features on older version of the platform, including: Supports `textAllCaps` style attribute which works back to `Eclair MR1`.
AppWidgetHostView	Provides the glue to show AppWidget views.
AutoCompleteTextView	An editable text view that shows completion suggestions automatically while the user is typing.
BaseCardView	A card style layout that responds to certain state changes.
BrowseFrameLayout	A ViewGroup for managing focus behavior between overlapping views.
Button	Represents a push-button widget.
CalendarView	This class is a calendar widget for displaying and selecting dates.
CardView	A FrameLayout with a rounded corner background and shadow.
CheckBox	A checkbox is a specific type of two-states button that can be either checked or unchecked.
CheckedTextView	An extension to `TextView` that supports the `Checkable` interface and displays.
Chronometer	Class that implements a simple timer.
ClipDrawable	A Drawable that clips another Drawable based on this Drawable's current level value.
CollapsingToolbarLayout	CollapsingToolbarLayout is a wrapper for `Toolbar` which implements a collapsing app bar.
CompoundButton	A button with two states, checked and unchecked.
ContentLoadingProgressBar	ContentLoadingProgressBar implements a ProgressBar that waits a minimum time to be dismissed before showing.
CoordinatorLayout	CoordinatorLayout is a super-powered `FrameLayout`.
DatePicker	Provides a widget for selecting a date.
DialerFilter
DigitalClock	This class was deprecated in API level 17. It is recommended you use `TextClock` instead.
DrawableContainer	A helper class that contains several `Drawable`s and selects which one to use.
DrawableWrapper	Drawable container with only one child element.
DrawerLayout	DrawerLayout acts as a top-level container for window content that allows for interactive "drawer" views to be pulled out from one or both vertical edges of the window.
EditText	EditText is a thin veneer over TextView that configures itself to be editable.
ExpandableListView	A view that shows items in a vertically scrolling two-level list.
ExtractEditText	Specialization of `EditText` for showing and interacting with the extracted text in a full-screen input method.
FloatingActionButton	Floating action buttons are used for a special type of promoted action.
FragmentBreadCrumbs	This class was deprecated in API level 21. This widget is no longer supported.
FragmentTabHost	Special TabHost that allows the use of `Fragment` objects for its tab content.
FrameLayout	FrameLayout is designed to block out an area on the screen to display a single item.
GLSurfaceView	An implementation of SurfaceView that uses the dedicated surface for displaying OpenGL rendering.
Gallery	This class was deprecated in API level 16. This widget is no longer supported. Other horizontally scrolling widgets include `HorizontalScrollView` and `ViewPager` from the support library.
GestureOverlayView	A transparent overlay for gesture input that can be placed on top of other widgets or contain other widgets.
GridLayout	A layout that places its children in a rectangular grid.
GridView	A view that shows items in two-dimensional scrolling grid.
GuidedActionEditText	A custom EditText that satisfies the IME key monitoring requirements of GuidedStepFragment.
HorizontalGridView	A `ViewGroup` that shows items in a horizontal scrolling list.
HorizontalScrollView	Layout container for a view hierarchy that can be scrolled by the user, allowing it to be larger than the physical display.
ImageButton	Displays a button with an image (instead of text) that can be pressed or clicked by the user.
ImageCardView	A subclass of `BaseCardView` with an `ImageView` as its main region.
ImageSwitcher
ImageView	Displays an arbitrary image, such as an icon.
InsetDrawable	A Drawable that insets another Drawable by a specified distance.
KeyboardView	A view that renders a virtual `Keyboard`.
LayerDrawable	A Drawable that manages an array of other Drawables.
LevelListDrawable	A resource that manages a number of alternate Drawables, each assigned a maximum numerical value.
LinearLayout	A Layout that arranges its children in a single column or a single row.
LinearLayoutCompat	A Layout that arranges its children in a single column or a single row.
ListRowHoverCardView	ListRowHoverCardView contains a title and description.
ListRowView	ListRowView is a `ViewGroup` which always contains a `HorizontalGridView`, and may optionally include a hover card.
ListView	A view that shows items in a vertically scrolling list.
MediaController	A view containing controls for a MediaPlayer.
MediaRouteButton
MultiAutoCompleteTextView	An editable text view, extending `AutoCompleteTextView`, that can show completion suggestions for the substring of the text where the user is typing instead of necessarily for the entire thing.
NavigationView	Represents a standard navigation menu for application.
NestedScrollView	NestedScrollView is just like `ScrollView`, but it supports acting as both a nested scrolling parent and child on both new and old versions of Android.
NumberPicker	A widget that enables the user to select a number from a predefined range.
PagerTabStrip	PagerTabStrip is an interactive indicator of the current, next, and previous pages of a `ViewPager`.
PagerTitleStrip	PagerTitleStrip is a non-interactive indicator of the current, next, and previous pages of a `ViewPager`.
PercentFrameLayout	Subclass of `FrameLayout` that supports percentage based dimensions and margins.
PercentRelativeLayout	Subclass of `RelativeLayout` that supports percentage based dimensions and margins.
Picker	Picker is a widget showing multiple customized `PickerColumn`s.
ProgressBar	Visual indicator of progress in some operation.
QuickContactBadge	Widget used to show an image with the standard QuickContact badge and on-click behavior.
RadioButton	A radio button is a two-states button that can be either checked or unchecked.
RadioGroup	This class is used to create a multiple-exclusion scope for a set of radio buttons.
RatingBar	A RatingBar is an extension of SeekBar and ProgressBar that shows a rating in stars.
RecyclerView	A flexible view for providing a limited window into a large data set.
RelativeLayout	A Layout where the positions of the children can be described in relation to each other or to the parent.
RippleDrawable	Drawable that shows a ripple effect in response to state changes.
RotateDrawable	A Drawable that can rotate another Drawable based on the current level value.
RowHeaderView	RowHeaderView is a header text view.
ScaleDrawable	A Drawable that changes the size of another Drawable based on its current level value.
ScrollView	Layout container for a view hierarchy that can be scrolled by the user, allowing it to be larger than the physical display.
SearchBar	A search widget containing a search orb and a text entry view.
SearchEditText	EditText widget that monitors keyboard changes.
SearchOrbView	A widget that draws a search affordance, represented by a round background and an icon.
SearchView	A widget that provides a user interface for the user to enter a search query and submit a request to a search provider.
SeekBar	A SeekBar is an extension of ProgressBar that adds a draggable thumb.
ShadowOverlayContainer	Provides an SDK version-independent wrapper to support shadows, color overlays, and rounded corners.
SlidingDrawer	This class was deprecated in API level 17. This class is not supported anymore. It is recommended you base your own implementation on the source code for the Android Open Source Project if you must use it in your application.
SlidingPaneLayout	SlidingPaneLayout provides a horizontal, multi-pane layout for use at the top level of a UI.
Space	Space is a lightweight View subclass that may be used to create gaps between components in general purpose layouts.
SpeechOrbView	A subclass of `SearchOrbView` that visualizes the state of an ongoing speech recognition.
Spinner	A view that displays one child at a time and lets the user pick among them.
StackView
StateListDrawable	Lets you assign a number of graphic images to a single Drawable and swap out the visible item by a string ID value.
SurfaceView	Provides a dedicated drawing surface embedded inside of a view hierarchy.
SwipeRefreshLayout	The SwipeRefreshLayout should be used whenever the user can refresh the contents of a view via a vertical swipe gesture.
Switch	A Switch is a two-state toggle switch widget that can select between two options.
SwitchCompat	SwitchCompat is a version of the Switch widget which on devices back to API v7.
TabHost	Container for a tabbed window view.
TabItem	TabItem is a special 'view' which allows you to declare tab items for a `TabLayout` within a layout.
TabLayout	TabLayout provides a horizontal layout to display tabs.
TabWidget	Displays a list of tab labels representing each page in the parent's tab collection.
TableLayout	A layout that arranges its children into rows and columns.
TableRow	A layout that arranges its children horizontally.
TextClock	`TextClock` can display the current date and/or time as a formatted string.
TextInputEditText	A special sub-class of `EditText` designed for use as a child of `TextInputLayout`.
TextInputLayout	Layout which wraps an `EditText` (or descendant) to show a floating label when the hint is hidden due to the user inputting text.
TextSwitcher	Specialized `ViewSwitcher` that contains only children of type `TextView`.
TextView	Displays text to the user and optionally allows them to edit it.
TextureView	A TextureView can be used to display a content stream.
TimePicker	A widget for selecting the time of day, in either 24-hour or AM/PM mode.
TitleView	Title view for a leanback fragment.
ToggleButton	Displays checked/unchecked states as a button with a "light" indicator and by default accompanied with the text "ON" or "OFF".
Toolbar	A standard toolbar for use within application content.
TransitionDrawable	An extension of LayerDrawables that is intended to cross-fade between the first and second layer.
TvView	Displays TV contents.
TwoLineListItem	This class was deprecated in API level 17. This class can be implemented easily by apps using a `RelativeLayout` or a `LinearLayout`.
VerticalGridView	A `ViewGroup` that shows items in a vertically scrolling list.
VideoView	Displays a video file.
View	This class represents the basic building block for user interface components.
ViewAnimator	Base class for a `FrameLayout` container that will perform animations when switching between its views.
ViewFlipper	Simple `ViewAnimator` that will animate between two or more views that have been added to it.
ViewGroup	A `ViewGroup` is a special view that can contain other views (called children.) The view group is the base class for layouts and views containers.
ViewPager	Layout manager that allows the user to flip left and right through pages of data.
ViewStub	A ViewStub is an invisible, zero-sized View that can be used to lazily inflate layout resources at runtime.
ViewSwitcher	`ViewAnimator` that switches between two views, and has a factory from which these views are created.
WebView	A View that displays web pages.
ZoomButton
ZoomControls	The `ZoomControls` class displays a simple set of controls used for zooming and provides callbacks to register for events.

Implement this interface if you want to create an animated drawable that extends Drawable. Upon retrieving a drawable, use setCallback(android.graphics.drawable.Drawable.Callback) to supply your implementation of the interface to the drawable; it uses this interface to schedule and execute animation changes.

Summary

Public methods
`abstract void`	`invalidateDrawable(Drawable who)` Called when the drawable needs to be redrawn.
`abstract void`	`scheduleDrawable(Drawable who, Runnable what, long when)` A Drawable can call this to schedule the next frame of its animation.
`abstract void`	`unscheduleDrawable(Drawable who, Runnable what)` A Drawable can call this to unschedule an action previously scheduled with `scheduleDrawable(Drawable, Runnable, long)`.

Public methods

invalidateDrawable

Added in API level 1

void invalidateDrawable (Drawable who)

Called when the drawable needs to be redrawn. A view at this point should invalidate itself (or at least the part of itself where the drawable appears).

Parameters
`who`	`Drawable`: The drawable that is requesting the update.

scheduleDrawable

Added in API level 1

void scheduleDrawable (Drawable who, 
                Runnable what, 
                long when)

A Drawable can call this to schedule the next frame of its animation. An implementation can generally simply call postAtTime(Runnable, Object, long) with the parameters (what, who, when) to perform the scheduling.

Parameters
`who`	`Drawable`: The drawable being scheduled.
`what`	`Runnable`: The action to execute.
`when`	`long`: The time (in milliseconds) to run. The timebase is `uptimeMillis()`

unscheduleDrawable

Added in API level 1

void unscheduleDrawable (Drawable who, 
                Runnable what)

A Drawable can call this to unschedule an action previously scheduled with scheduleDrawable(Drawable, Runnable, long). An implementation can generally simply call removeCallbacks(Runnable, Object) with the parameters (what, who) to unschedule the drawable.

Parameters
`who`	`Drawable`: The drawable being unscheduled.
`what`	`Runnable`: The action being unscheduled.