程序包 ohos.aafwk.ability

Provides high-level classes of the overall OHOS application development model.

An OHOS application is defined using OHOS's core component Ability. The Ability has three types of templates, including Page, Service, and Data.

• Ability using the Page template represents an ability with UIs and must include AbilitySlice, which is the minimum unit for page display. For example, you can use such abilities to take photos, and view maps.
• Ability using the Service template represents a no-UI ability running in the background. For example, you can use such abilities to enable music play and map navigation in the background.
• Ability using the Data template represents a no-UI ability for inter-application data operations and access. For example, you can use such abilities to search for contacts and access images, audio clips, and video clips.

从以下版本开始:

1

接口概要

接口	说明
AbilityForm.OnAcquiredCallback	Provides callback methods that are invoked when an AbilityForm instance created by the supplier is obtained or destroyed on the client.
AbilityLifecycleCallbacks	Provides callbacks used to listen for all lifecycle changes of abilities in an application.
AbilitySlice.FormCallback	Provides callbacks that will be invoked when a Form instance is obtained or when the Form provider is uninstalled.
IAbilityConnection	Provides callback methods that are called when a remote ability using the Service template is connected or disconnected.
IAbilityContinuation	Enables an Ability to implement migration in a distributed system.
IAbilityStartCallback	Interface for Ability start callback.
IDataAbilityObserver	Registers an observer for monitoring specified data.
ILifecycle	Generates a Lifecycle object.
ILifecycleObserver	Identifies a class as a ILifecycleObserver.
LifecycleStateObserver	Observes specific lifecycle events and responds to lifecycle changes.
PipeFileWriter<T>	Provides methods that can be called by background threads to write data into a pipe.

类概要

类	说明
Ability	An ability is an abstraction of functionalities that an OHOS application can provide.
Ability.LayoutParamsHelper	Helps you use an Intent to set the layout parameters of the application startup window.
Ability.WindowAttributeHelper	Helps you use an Intent to set window attributes for the current application.
AbilityForm	Displays brief information about another Ability.
AbilityLifecycleExecutor	A utility class used to process lifecycle states of an Ability.
AbilityMissionInfo	This class is contains ability mission info for user to manage ability.
AbilityPackage	A base class used for user to initialize each hap.
AbilitySlice	As the fundamental unit of the Ability using the Page template, AbilitySlice provides an ability with a carrier for service logic and UI display.
AbilitySliceAnimator	Customizes the transition animation between AbilitySlice instances.
AbilitySliceLifecycleExecutor	A utility class used to process lifecycle states of an AbilitySlice.
AbilityWindowConfiguration	Defines the window display modes of a Page ability, for example, the multi-window modes.
DataAbilityHelper	Helps applications to access data.
DataAbilityOperation	Performs an operation on the database.
DataAbilityOperation.Builder	Creates a DataAbilityOperation.
DataAbilityResult	Saves the data operation result.
DataUriUtils	A utility class used for handling Uri objects that use the dataability scheme.
DeviceConfigInfo	Provides information about an application's device configuration requirements that you can obtain by calling IAbilityManager.getDeviceConfigInfo().
Form	Represents the basic data structure of a form.
FormBindingData	Represents the data structure of a JS form.
IntentAbility	A base class for abilities using the Service template that is used to process background tasks in worker threads to avoid running time-consuming tasks in the main thread, ensuring the application responsiveness.
Lifecycle	Provides a class for you to observe the lifecycle of an Ability or AbilitySlice.
LifecycleObserver	Observes and responds to lifecycle changes.
LocalRemoteObject	This is LocalRemoteObject abstract used to start Local service.
MemoryInfo	Encapsulates memory usage information for a running application.
OnClickListener	Provides callback methods that are registered with the AbilityForm supplier for listening for click events.
PathMatcher	Stores and matches database and file paths in an ability using the Data template.
ProcessErrorInfo	Process error state info.
ProviderFormInfo	Provides methods for the Form provider to set form information such as the content to be displayed on the remote form and the trigger events.
RunningProcessInfo	Encapsulates process information for a running application.
SystemMemoryInfo	Provides system memory information that you can obtain by calling IAbilityManager.getSystemMemoryInfo(ohos.aafwk.ability.SystemMemoryInfo).
ViewListener	A base class used to provide callback methods that are registered with the AbilityForm supplier to listen for click or touch events.
ViewsStatus	Obtains the view status of an AbilityForm client from the supplier.

枚举概要

枚举	说明
AbilityLifecycleExecutor.LifecycleState	Enumerates all lifecycle states of an ability.
AbilitySliceLifecycleExecutor.LifecycleState	Enumerates all lifecycle states of an ability slice.
ContinuationState	Enumerates the migration states of an Ability that has implemented IAbilityContinuation and is in a reversible migration process that allows the ability to be migrated back.
FormException.FormError	FormError indicates the form error code and error message.
FormState	Enumerates the states of a form.
Lifecycle.Event	Indicates a lifecycle event.

异常错误概要

异常错误	说明
AbilitySliceRuntimeException	Describes an exception thrown when a runtime exception occurs in an AbilitySlice.
DataAbilityDeadException	Describes a process exit exception.
DataAbilityRemoteException	Describes a remote process exit exception.
FormException	Describes an exception thrown when an error occurs during Form operation.
OperationExecuteException	Describes an exception thrown when an operation execution exception occurs in an ability using the Data template.
ProfileMissingConfigException	Describes the exception thrown when the profile missing a necessary configuration.