RxPagedListBuilder
class RxPagedListBuilder<Key : Any, Value : Any>
Builder for Observable<PagedList> or Flowable<PagedList>, given a DataSource.Factory and a PagedList.Config.
The required parameters are in the constructor, so you can simply construct and build, or optionally enable extra features (such as initial load key, or BoundaryCallback).
The returned observable/flowable will already be subscribed on the setFetchScheduler, and will perform all loading on that scheduler. It will already be observed on setNotifyScheduler, and will dispatch new PagedLists, as well as their updates to that scheduler.
| Parameters | |
|---|---|
<Key : Any> |
Type of input valued used to load data from the |
<Value : Any> |
Item type being presented. |
Summary
Public constructors |
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<Key : Any, Value : Any> This function is deprecated. PagedList is deprecated and has been replaced by PagingData |
<Key : Any, Value : Any> This function is deprecated. PagedList is deprecated and has been replaced by PagingData |
<Key : Any, Value : Any> This function is deprecated. PagedList is deprecated and has been replaced by PagingData |
<Key : Any, Value : Any> This function is deprecated. PagedList is deprecated and has been replaced by PagingData |
Public functions |
|
|---|---|
Flowable<PagedList<Value>> |
buildFlowable(backpressureStrategy: BackpressureStrategy)Constructs a |
Observable<PagedList<Value>> |
Constructs a |
RxPagedListBuilder<Key, Value> |
setBoundaryCallback(Sets a |
RxPagedListBuilder<Key, Value> |
setFetchScheduler(scheduler: Scheduler)Sets scheduler which will be used for background fetching of PagedLists, as well as on-demand fetching of pages inside. |
RxPagedListBuilder<Key, Value> |
setInitialLoadKey(key: Key?)First loading key passed to the first PagedList/DataSource. |
RxPagedListBuilder<Key, Value> |
setNotifyScheduler(scheduler: Scheduler)Sets scheduler which will be used for observing new PagedLists, as well as loading updates within the PagedLists. |
Public constructors
RxPagedListBuilder
<Key : Any, Value : Any>RxPagedListBuilder(
dataSourceFactory: DataSource.Factory<Key, Value>,
config: PagedList.Config
)
Creates a RxPagedListBuilder with required parameters.
| Parameters | |
|---|---|
dataSourceFactory: DataSource.Factory<Key, Value> |
DataSource factory providing DataSource generations. |
config: PagedList.Config |
Paging configuration. |
RxPagedListBuilder
<Key : Any, Value : Any>RxPagedListBuilder(
dataSourceFactory: DataSource.Factory<Key, Value>,
pageSize: Int
)
Creates a RxPagedListBuilder with required parameters.
This method is a convenience for:
RxPagedListBuilder(
dataSourceFactory,
PagedList.Config.Builder().setPageSize(pageSize).build()
)
| Parameters | |
|---|---|
dataSourceFactory: DataSource.Factory<Key, Value> |
|
pageSize: Int |
Size of pages to load. |
RxPagedListBuilder
<Key : Any, Value : Any>RxPagedListBuilder(
pagingSourceFactory: () -> PagingSource<Key, Value>,
config: PagedList.Config
)
Creates a RxPagedListBuilder with required parameters.
| Parameters | |
|---|---|
pagingSourceFactory: () -> PagingSource<Key, Value> |
DataSource factory providing DataSource generations. |
config: PagedList.Config |
Paging configuration. |
RxPagedListBuilder
<Key : Any, Value : Any>RxPagedListBuilder(
pagingSourceFactory: () -> PagingSource<Key, Value>,
pageSize: Int
)
Creates a RxPagedListBuilder with required parameters.
This method is a convenience for:
RxPagedListBuilder(
pagingSourceFactory,
PagedList.Config.Builder().setPageSize(pageSize).build()
)
| Parameters | |
|---|---|
pagingSourceFactory: () -> PagingSource<Key, Value> |
|
pageSize: Int |
Size of pages to load. |
Public functions
fun buildFlowable(backpressureStrategy: BackpressureStrategy): Flowable<PagedList<Value>>
Constructs a Flowable<PagedList>.
The returned Observable will already be observed on the notifyScheduler, and subscribed on the fetchScheduler.
| Parameters | |
|---|---|
backpressureStrategy: BackpressureStrategy |
BackpressureStrategy for the |
fun buildObservable(): Observable<PagedList<Value>>
Constructs a Observable<PagedList>.
The returned Observable will already be observed on the notifyScheduler, and subscribed on the fetchScheduler.
| Returns | |
|---|---|
Observable<PagedList<Value>> |
The |
fun setBoundaryCallback(
boundaryCallback: PagedList.BoundaryCallback<Value>?
): RxPagedListBuilder<Key, Value>
Sets a androidx.paging.PagedList.BoundaryCallback on each PagedList created, typically used to load additional data from network when paging from local storage.
Pass a BoundaryCallback to listen to when the PagedList runs out of data to load. If this method is not called, or null is passed, you will not be notified when each DataSource runs out of data to provide to its PagedList.
If you are paging from a DataSource.Factory backed by local storage, you can set a BoundaryCallback to know when there is no more information to page from local storage. This is useful to page from the network when local storage is a cache of network data.
Note that when using a BoundaryCallback with a Observable<PagedList>, method calls on the callback may be dispatched multiple times - one for each PagedList/DataSource pair. If loading network data from a BoundaryCallback, you should prevent multiple dispatches of the same method from triggering multiple simultaneous network loads.
| Parameters | |
|---|---|
boundaryCallback: PagedList.BoundaryCallback<Value>? |
The boundary callback for listening to PagedList load state. |
| Returns | |
|---|---|
RxPagedListBuilder<Key, Value> |
this |
fun setFetchScheduler(scheduler: Scheduler): RxPagedListBuilder<Key, Value>
Sets scheduler which will be used for background fetching of PagedLists, as well as on-demand fetching of pages inside.
If not set, defaults to the Arch components I/O thread pool.
The built Observable / Flowable will be subscribed on this scheduler.
| Parameters | |
|---|---|
scheduler: Scheduler |
|
| Returns | |
|---|---|
RxPagedListBuilder<Key, Value> |
this |
fun setInitialLoadKey(key: Key?): RxPagedListBuilder<Key, Value>
First loading key passed to the first PagedList/DataSource.
When a new PagedList/DataSource pair is created after the first, it acquires a load key from the previous generation so that data is loaded around the position already being observed.
| Parameters | |
|---|---|
key: Key? |
Initial load key passed to the first PagedList/DataSource. |
| Returns | |
|---|---|
RxPagedListBuilder<Key, Value> |
this |
fun setNotifyScheduler(scheduler: Scheduler): RxPagedListBuilder<Key, Value>
Sets scheduler which will be used for observing new PagedLists, as well as loading updates within the PagedLists.
If not set, defaults to the UI thread.
The built Observable / Flowable will be observed on this scheduler, so that the thread receiving PagedLists will also receive the internal updates to the PagedList.
| Parameters | |
|---|---|
scheduler: Scheduler |
Scheduler that receives PagedList updates, and where |
| Returns | |
|---|---|
RxPagedListBuilder<Key, Value> |
this |