GuidanceStylist


public class GuidanceStylist implements FragmentAnimationProvider


GuidanceStylist is used within a androidx.leanback.app.GuidedStepFragment to display contextual information for the decision(s) required at that step.

Many aspects of the base GuidanceStylist can be customized through theming; see the theme attributes below. Note that these attributes are not set on individual elements in layout XML, but instead would be set in a custom theme. See Styles and Themes for more information.

If these hooks are insufficient, this class may also be subclassed. Subclasses may wish to override the onProvideLayoutId method to change the layout file used to display the guidance; more complex layouts may be supported by also providing a subclass of GuidanceStylist.Guidance with extra fields.

Note: If an alternate layout is provided, the following view IDs should be used to refer to base elements:

View IDs are allowed to be missing, in which case the corresponding views will be null. guidedStepImeAppearingAnimationguidedStepImeDisappearingAnimationguidanceContainerStyleguidanceTitleStyleguidanceDescriptionStyleguidanceBreadcrumbStyleguidanceIconStyle

Summary

Nested types

A data class representing contextual information for a .

Public constructors

Public methods

@Nullable TextView

Returns the view displaying the breadcrumb of the guidance.

@Nullable TextView

Returns the view displaying the description of the guidance.

@Nullable ImageView

Returns the view displaying the icon of the guidance.

@Nullable TextView

Returns the view displaying the title of the guidance.

@NonNull View
onCreateView(
    @NonNull LayoutInflater inflater,
    @Nullable ViewGroup container,
    @NonNull GuidanceStylist.Guidance guidance
)

Creates an appropriately configured view for the given Guidance, using the provided inflater and container.

void

Called when destroy the View created by GuidanceStylist.

void

Animates the fragment in response to the IME appearing.

void

Animates the fragment in response to the IME disappearing.

int

Provides the resource ID of the layout defining the guidance view.

Public constructors

GuidanceStylist

Added in 1.1.0
public GuidanceStylist()

Public methods

getBreadcrumbView

Added in 1.1.0
public @Nullable TextView getBreadcrumbView()

Returns the view displaying the breadcrumb of the guidance.

Returns
@Nullable TextView

The text view object for the breadcrumb.

getDescriptionView

Added in 1.1.0
public @Nullable TextView getDescriptionView()

Returns the view displaying the description of the guidance.

Returns
@Nullable TextView

The text view object for the description.

getIconView

Added in 1.1.0
public @Nullable ImageView getIconView()

Returns the view displaying the icon of the guidance.

Returns
@Nullable ImageView

The image view object for the icon.

getTitleView

Added in 1.1.0
public @Nullable TextView getTitleView()

Returns the view displaying the title of the guidance.

Returns
@Nullable TextView

The text view object for the title.

onCreateView

Added in 1.1.0
public @NonNull View onCreateView(
    @NonNull LayoutInflater inflater,
    @Nullable ViewGroup container,
    @NonNull GuidanceStylist.Guidance guidance
)

Creates an appropriately configured view for the given Guidance, using the provided inflater and container.

Note: Does not actually add the created view to the container; the caller should do this.

Parameters
@NonNull LayoutInflater inflater

The layout inflater to be used when constructing the view.

@Nullable ViewGroup container

The view group to be passed in the call to LayoutInflater.inflate.

@NonNull GuidanceStylist.Guidance guidance

The guidance data for the view.

Returns
@NonNull View

The view to be added to the caller's view hierarchy.

onDestroyView

Added in 1.1.0
public void onDestroyView()

Called when destroy the View created by GuidanceStylist.

onImeAppearing

Added in 1.2.0-alpha04
public void onImeAppearing(@NonNull List<Animator> animators)

Animates the fragment in response to the IME appearing.

onImeDisappearing

Added in 1.2.0-alpha04
public void onImeDisappearing(@NonNull List<Animator> animators)

Animates the fragment in response to the IME disappearing.

onProvideLayoutId

Added in 1.1.0
public int onProvideLayoutId()

Provides the resource ID of the layout defining the guidance view. Subclasses may override to provide their own customized layouts. The base implementation returns lb_guidance. If overridden, the substituted layout should contain matching IDs for any views that should be managed by the base class; this can be achieved by starting with a copy of the base layout file.

Returns
int

The resource ID of the layout to be inflated to define the guidance view.