UI libraries / InstantSearch Android / Widgets

Loading

Signature 
LoadingConnector(
  searcher: Searcher,
  viewModel: LoadingViewModel,
  debouncer: Debouncer
)
See code examples
See demo

About this widget

Components that show a loading indicator during pending requests.

To add a loading indicator to your search experience, use these components:

  • Searcher: The Searcher that handles your searches.
  • LoadingViewModel: The logic applied to the loading indicator.
  • LoadingView: The concrete view displayed during loading.

Examples

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class MyActivity: AppCompatActivity() {
    val searcher = HitsSearcher(
        applicationID = ApplicationID("YourApplicationID"),
        apiKey = APIKey("YourSearchOnlyAPIKey"),
        indexName = IndexName("YourIndexName")
    )
    val loading = LoadingConnector(searcher)
    val connection = ConnectionHandler(loading)

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        val swipeRefreshLayout = SwipeRefreshLayout(this)
        val view: LoadingView = LoadingViewSwipeRefreshLayout(swipeRefreshLayout)
        connection += loading.connectView(view)
        searcher.searchAsync()
    }

    override fun onDestroy() {
        super.onDestroy()
        connection.disconnect()
        searcher.cancel()
    }
}

Parameters

Parameter Description
searcher
type: Searcher
Required

The Searcher that handles your searches.
viewModel
type: LoadingViewModel
default: LoadingViewModel()
Optional

The logic applied to the loading indicator.
debouncer
type: Debouncer
default: Debouncer(debounceLoadingInMillis)
Optional

Delays searcher operations by a specified time duration.

ViewModel

Parameter Description
isLoading
type: Boolean
default: false
Optional

When true, the interface starts in a loading state.
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LoadingViewModel(isLoading = true)

View

Parameter Description
view
type: LoadingView
Required

The concrete view displayed during load.
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val swipeRefreshLayout = SwipeRefreshLayout(this)
val view: LoadingView = LoadingViewSwipeRefreshLayout(swipeRefreshLayout)
loading.connectView(view)

Compose UI

InstantSearch provides the LoadingState as a state model, which is an implementation of the LoadingView interface. You need to connect LoadingState to the LoadingConnector or LoadingViewModel like any other LoadingView implementation.

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class MyActivity : AppCompatActivity() {
    val searcher = HitsSearcher(
        applicationID = ApplicationID("YourApplicationID"),
        apiKey = APIKey("YourSearchOnlyAPIKey"),
        indexName = IndexName("YourIndexName")
    )
    val loadingState = LoadingState()
    val loading = LoadingConnector(searcher)
    val connections = ConnectionHandler(loading)

    init {
        connections += loading.connectView(loadingState)
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            SwipeRefresh(
                state = rememberSwipeRefreshState(loadingState.loading),
                onRefresh = { loadingState.reload() },
            ) {
                //...
            }
        }
        searcher.searchAsync()
    }

    override fun onDestroy() {
        super.onDestroy()
        connections.disconnect()
        searcher.cancel()
    }
}
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InstantSearch Android v3