GoogleMap suspending initializer with coroutine
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I have created delegate to initialize GoogleMap instance which is using coroutine. Map fragment is dispalyed properly until I invoke any method on map reference, then map hangs and stop responding.
This is my delegate:
class MapInitializer(private val setUp: GoogleMap.() -> Unit) : ReadOnlyProperty<AppCompatActivity, GoogleMap> {
var instance: GoogleMap? = null
override fun getValue(thisRef: AppCompatActivity, property: KProperty<*>): GoogleMap {
return instance ?: thisRef.loadMap().apply(setUp).also { instance = it }
}
private fun AppCompatActivity.loadMap(): GoogleMap = runBlocking {
async { registerCallback() }.await()
}
private suspend fun AppCompatActivity.registerCallback(): GoogleMap = suspendCoroutine { continuation ->
(supportFragmentManager.findFragmentById(R.id.map) as SupportMapFragment).getMapAsync {
continuation.resume(
it
)
}
}
}
I suppose that map thread is suspending but I have no idea why. Help please.
android kotlin maps coroutine asked Nov 9 at 16:09
Karol Kulbaka
357111
|
show 2 more comments
up vote
0
down vote
favorite
I have created delegate to initialize GoogleMap instance which is using coroutine. Map fragment is dispalyed properly until I invoke any method on map reference, then map hangs and stop responding.
This is my delegate:
class MapInitializer(private val setUp: GoogleMap.() -> Unit) : ReadOnlyProperty<AppCompatActivity, GoogleMap> {
var instance: GoogleMap? = null
override fun getValue(thisRef: AppCompatActivity, property: KProperty<*>): GoogleMap {
return instance ?: thisRef.loadMap().apply(setUp).also { instance = it }
}
private fun AppCompatActivity.loadMap(): GoogleMap = runBlocking {
async { registerCallback() }.await()
}
private suspend fun AppCompatActivity.registerCallback(): GoogleMap = suspendCoroutine { continuation ->
(supportFragmentManager.findFragmentById(R.id.map) as SupportMapFragment).getMapAsync {
continuation.resume(
it
)
}
}
}
I suppose that map thread is suspending but I have no idea why. Help please.
android kotlin maps coroutine asked Nov 9 at 16:09
Karol Kulbaka
357111
runBlockingblocks the thread.
– Zoe
Nov 9 at 16:11
@Zoe What else I can use instead as bridge between suspended and nonsuspend function?
– Karol Kulbaka
Nov 9 at 16:13
@Zoe More important: whyrunBlockingblock thread when I useMapreference?
– Karol Kulbaka
Nov 9 at 16:20
runBlockingcombined withawaitwill prevent execution until the coroutine is complete. You call loadMap in getValue every single time, without caching the result. So you load it every time you retrieve it, blocking it every time you do so.
– Zoe
Nov 9 at 16:24
I have edited code in question to load map only on first invoke, but it didn't solve problem.
– Karol Kulbaka
Nov 9 at 16:50
|
show 2 more comments
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I have created delegate to initialize GoogleMap instance which is using coroutine. Map fragment is dispalyed properly until I invoke any method on map reference, then map hangs and stop responding.
This is my delegate:
class MapInitializer(private val setUp: GoogleMap.() -> Unit) : ReadOnlyProperty<AppCompatActivity, GoogleMap> {
var instance: GoogleMap? = null
override fun getValue(thisRef: AppCompatActivity, property: KProperty<*>): GoogleMap {
return instance ?: thisRef.loadMap().apply(setUp).also { instance = it }
}
private fun AppCompatActivity.loadMap(): GoogleMap = runBlocking {
async { registerCallback() }.await()
}
private suspend fun AppCompatActivity.registerCallback(): GoogleMap = suspendCoroutine { continuation ->
(supportFragmentManager.findFragmentById(R.id.map) as SupportMapFragment).getMapAsync {
continuation.resume(
it
)
}
}
}
I suppose that map thread is suspending but I have no idea why. Help please.
android kotlin maps coroutine asked Nov 9 at 16:09
Karol Kulbaka
357111
I have created delegate to initialize GoogleMap instance which is using coroutine. Map fragment is dispalyed properly until I invoke any method on map reference, then map hangs and stop responding.
This is my delegate:
class MapInitializer(private val setUp: GoogleMap.() -> Unit) : ReadOnlyProperty<AppCompatActivity, GoogleMap> {
var instance: GoogleMap? = null
override fun getValue(thisRef: AppCompatActivity, property: KProperty<*>): GoogleMap {
return instance ?: thisRef.loadMap().apply(setUp).also { instance = it }
}
private fun AppCompatActivity.loadMap(): GoogleMap = runBlocking {
async { registerCallback() }.await()
}
private suspend fun AppCompatActivity.registerCallback(): GoogleMap = suspendCoroutine { continuation ->
(supportFragmentManager.findFragmentById(R.id.map) as SupportMapFragment).getMapAsync {
continuation.resume(
it
)
}
}
}
I suppose that map thread is suspending but I have no idea why. Help please.
android kotlin maps coroutine android kotlin maps coroutine asked Nov 9 at 16:09
Karol Kulbaka
357111
asked Nov 9 at 16:09
Karol Kulbaka
357111
edited Nov 9 at 16:48
asked Nov 9 at 16:09
Karol Kulbaka
357111
asked Nov 9 at 16:09
Karol Kulbaka
357111
asked Nov 9 at 16:09
Karol Kulbaka
357111
357111
runBlockingblocks the thread.
– Zoe
Nov 9 at 16:11
@Zoe What else I can use instead as bridge between suspended and nonsuspend function?
– Karol Kulbaka
Nov 9 at 16:13
@Zoe More important: whyrunBlockingblock thread when I useMapreference?
– Karol Kulbaka
Nov 9 at 16:20
runBlockingcombined withawaitwill prevent execution until the coroutine is complete. You call loadMap in getValue every single time, without caching the result. So you load it every time you retrieve it, blocking it every time you do so.
– Zoe
Nov 9 at 16:24
I have edited code in question to load map only on first invoke, but it didn't solve problem.
– Karol Kulbaka
Nov 9 at 16:50
|
show 2 more comments
runBlockingblocks the thread.
– Zoe
Nov 9 at 16:11
@Zoe What else I can use instead as bridge between suspended and nonsuspend function?
– Karol Kulbaka
Nov 9 at 16:13
@Zoe More important: whyrunBlockingblock thread when I useMapreference?
– Karol Kulbaka
Nov 9 at 16:20
runBlockingcombined withawaitwill prevent execution until the coroutine is complete. You call loadMap in getValue every single time, without caching the result. So you load it every time you retrieve it, blocking it every time you do so.
– Zoe
Nov 9 at 16:24
I have edited code in question to load map only on first invoke, but it didn't solve problem.
– Karol Kulbaka
Nov 9 at 16:50
runBlocking blocks the thread.– Zoe
Nov 9 at 16:11
runBlocking blocks the thread.– Zoe
Nov 9 at 16:11
@Zoe What else I can use instead as bridge between suspended and nonsuspend function?
– Karol Kulbaka
Nov 9 at 16:13
@Zoe What else I can use instead as bridge between suspended and nonsuspend function?
– Karol Kulbaka
Nov 9 at 16:13
@Zoe More important: why
runBlocking block thread when I use Map reference?– Karol Kulbaka
Nov 9 at 16:20
@Zoe More important: why
runBlocking block thread when I use Map reference?– Karol Kulbaka
Nov 9 at 16:20
runBlocking combined with await will prevent execution until the coroutine is complete. You call loadMap in getValue every single time, without caching the result. So you load it every time you retrieve it, blocking it every time you do so.– Zoe
Nov 9 at 16:24
runBlocking combined with await will prevent execution until the coroutine is complete. You call loadMap in getValue every single time, without caching the result. So you load it every time you retrieve it, blocking it every time you do so.– Zoe
Nov 9 at 16:24
I have edited code in question to load map only on first invoke, but it didn't solve problem.
– Karol Kulbaka
Nov 9 at 16:50
I have edited code in question to load map only on first invoke, but it didn't solve problem.
– Karol Kulbaka
Nov 9 at 16:50
|
show 2 more comments
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runBlockingblocks the thread.– Zoe
Nov 9 at 16:11
@Zoe What else I can use instead as bridge between suspended and nonsuspend function?
– Karol Kulbaka
Nov 9 at 16:13
@Zoe More important: why
runBlockingblock thread when I useMapreference?– Karol Kulbaka
Nov 9 at 16:20
runBlockingcombined withawaitwill prevent execution until the coroutine is complete. You call loadMap in getValue every single time, without caching the result. So you load it every time you retrieve it, blocking it every time you do so.– Zoe
Nov 9 at 16:24
I have edited code in question to load map only on first invoke, but it didn't solve problem.
– Karol Kulbaka
Nov 9 at 16:50