LiveData

expect abstract class LiveData<T>

LiveData is an abstract class describing a data holder class that is observed within a lifetime.

The data object will notify its Observer in the following scenarios:

The Observer will be automatically removed upon termination of the LifecycleOwner.

LiveData instances are not thread-safe and assume that all interaction occurs on a single thread.

actual typealias LiveData<T> = NLiveData<T>

Constructors

expect constructor()

Consume the event as dispatched from the data object.

expect open fun getValue(): T?

Get the current value of the data.

expect open fun observe(owner: LifecycleOwner, observer: Observer<in T>)

Observe the data object.

expect open fun observeForever(observer: Observer<in T>)

Observe the data object forever.

在主线程中进行订阅通知

expect open fun removeObserver(observer: Observer<in T>)

Remove the given observer, preventing further changes from being dispatched.