api_livedata/com.tomtom.tools.android.api.livedata/TransformationMutableLiveData

TransformationMutableLiveData

class TransformationMutableLiveData<T>(transformation: (T) -> T) : MutableLiveData<T>

A LiveData that applies a transformation to the value before setting it.

For transformations when reading LiveData, Transformations.map is more suitable. With two-way data binding that is not possible however and this class can be used.

For example this can be useful to restrict the value applied in the LiveData between a min and max value.

Constructors

TransformationMutableLiveData

fun <T> TransformationMutableLiveData(value: T, transformation: (T) -> T)

TransformationMutableLiveData

fun <T> TransformationMutableLiveData(transformation: (T) -> T)

Inherited properties

mActiveCount

val mActiveCount: Int

mDataLock

val mDataLock: Any

mPendingData

val mPendingData: Any

Functions

postValue

open override fun postValue(value: T)

setValue

open override fun setValue(value: T)

Inherited functions

changeActiveCounter

@MainThread

open fun changeActiveCounter(p0: Int)

dispatchingValue

open fun dispatchingValue(@Nullable p0: LiveData.ObserverWrapper<T>?)

getValue

@Nullable

open fun getValue(): T?

getVersion

open fun getVersion(): Int

hasActiveObservers

open fun hasActiveObservers(): Boolean

hasObservers

open fun hasObservers(): Boolean

observe

@MainThread

open fun observe(@NonNull p0: LifecycleOwner, @NonNull p1: Observer<in T>)

observeForever

@MainThread

open fun observeForever(@NonNull p0: Observer<in T>)

onActive

open fun onActive()

onInactive

open fun onInactive()

removeObserver

@MainThread

open fun removeObserver(@NonNull p0: Observer<in T>)

removeObservers

@MainThread

open fun removeObservers(@NonNull p0: LifecycleOwner)