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feat: Use coroutine and AMU-KTX .awaitMap() to init basic map demo (#188)

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Sean Barbeau 2020-05-06 12:24:13 -04:00 committed by GitHub
parent 25cf804449
commit 41e6322ccb
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2 changed files with 21 additions and 15 deletions
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6
ApiDemos/kotlin/app/build.gradle
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@ -36,6 +36,12 @@ dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
// Google Maps KTX extensions
implementation 'com.google.maps.android:maps-ktx:1.4.0'
// Needed for coroutines
implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.2.0'
// Below is used to run the easypermissions library to manage location permissions
// EasyPermissions is needed to help us request for permission to access location
implementation 'pub.devrel:easypermissions:3.0.0'

30
ApiDemos/kotlin/app/src/main/java/com/example/kotlindemos/BasicMapDemoActivity.kt
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@ -18,40 +18,40 @@ package com.example.kotlindemos
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.coroutineScope
import com.google.android.gms.maps.CameraUpdateFactory
import com.google.android.gms.maps.GoogleMap
import com.google.android.gms.maps.OnMapReadyCallback
import com.google.android.gms.maps.SupportMapFragment
import com.google.android.gms.maps.model.LatLng
import com.google.android.gms.maps.model.MarkerOptions
import com.google.maps.android.ktx.MapsExperimentalFeature
import com.google.maps.android.ktx.awaitMap
/**
* This shows how to create a simple activity with a map and a marker on the map.
*/
class BasicMapDemoActivity :
AppCompatActivity(),
OnMapReadyCallback {
AppCompatActivity() {
val SYDNEY = LatLng(-33.862, 151.21)
val ZOOM_LEVEL = 13f
@MapsExperimentalFeature
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_basic_map_demo)
val mapFragment : SupportMapFragment? =
supportFragmentManager.findFragmentById(R.id.map) as? SupportMapFragment
mapFragment?.getMapAsync(this)
}
val mapFragment = supportFragmentManager.findFragmentById(R.id.map) as? SupportMapFragment
/**
* This is where we can add markers or lines, add listeners or move the camera. In this case,
* we just move the camera to Sydney and add a marker in Sydney.
*/
override fun onMapReady(googleMap: GoogleMap?) {
googleMap ?: return
with(googleMap) {
moveCamera(CameraUpdateFactory.newLatLngZoom(SYDNEY, ZOOM_LEVEL))
addMarker(MarkerOptions().position(SYDNEY))
lifecycle.coroutineScope.launchWhenCreated {
check(mapFragment != null)
val googleMap = mapFragment.awaitMap() // Execution pauses here until we get the callback from the Maps SDK with a googleMap.
// This is where we can add markers or lines, add listeners or move the camera.
// In this case, we just move the camera to Sydney and add a marker in Sydney.
with(googleMap) {
moveCamera(CameraUpdateFactory.newLatLngZoom(SYDNEY, ZOOM_LEVEL))
addMarker(MarkerOptions().position(SYDNEY))
}
}
}
}