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Merge pull request #41 from itsandreramon/useRememberWithLifecycleExt

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Add collectAsStateWithLifecycle Flow extension
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John O'Reilly 2021-04-23 12:40:33 +01:00 committed by GitHub
commit bb5926fd1a
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2 changed files with 24 additions and 8 deletions
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11
app/src/main/java/com/surrus/peopleinspace/ui/ISSPositionScreen.kt
View file

@ -3,17 +3,14 @@ package com.surrus.peopleinspace.ui
import androidx.compose.foundation.layout.*
import androidx.compose.material.*
import androidx.compose.runtime.Composable
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.getValue
import androidx.compose.runtime.livedata.observeAsState
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.platform.LocalLifecycleOwner
import androidx.compose.ui.viewinterop.AndroidView
import androidx.lifecycle.Lifecycle
import androidx.lifecycle.flowWithLifecycle
import com.surrus.common.remote.IssPosition
import com.surrus.peopleinspace.util.collectAsStateWithLifecycle
import org.koin.androidx.compose.getViewModel
import org.osmdroid.util.GeoPoint
import org.osmdroid.views.CustomZoomButtonsController
@ -25,11 +22,9 @@ fun ISSPositionScreen() {
val peopleInSpaceViewModel = getViewModel<PeopleInSpaceViewModel>()
val lifecycleOwner = LocalLifecycleOwner.current
val locationFlowLifecycleAware = remember(peopleInSpaceViewModel.issPosition, lifecycleOwner) {
peopleInSpaceViewModel.issPosition.flowWithLifecycle(lifecycleOwner.lifecycle, Lifecycle.State.STARTED)
}
val issPosition by locationFlowLifecycleAware.collectAsState(IssPosition(0.0, 0.0))
val issPosition by peopleInSpaceViewModel.issPosition
.collectAsStateWithLifecycle(lifecycleOwner, IssPosition(0.0, 0.0))
val context = LocalContext.current
val map = remember { MapView(context) }

21
app/src/main/java/com/surrus/peopleinspace/util/FlowExtensions.kt Normal file
View file

@ -0,0 +1,21 @@
package com.surrus.peopleinspace.util
import androidx.compose.runtime.Composable
import androidx.compose.runtime.State
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.remember
import androidx.lifecycle.Lifecycle
import androidx.lifecycle.LifecycleOwner
import androidx.lifecycle.flowWithLifecycle
import kotlinx.coroutines.flow.Flow
@Composable
fun <T> Flow<T>.collectAsStateWithLifecycle(
owner: LifecycleOwner,
initial: T,
minActiveState: Lifecycle.State = Lifecycle.State.STARTED,
): State<T> {
return remember(this, owner) {
flowWithLifecycle(owner.lifecycle, minActiveState)
}.collectAsState(initial)
}