rework for common init

Author: matteocrippa

shared/src/androidMain/kotlin/it/matteocrippa/sensorsmultiplatform/CommonActivity.kt

@@ -0,0 +1,5 @@
+package it.matteocrippa.sensorsmultiplatform
+
+import android.app.Activity
+
+actual typealias CommonActivity = Activity

shared/src/androidMain/kotlin/it/matteocrippa/sensorsmultiplatform/Sensors.kt

@@ -1,17 +1,17 @@
 package it.matteocrippa.sensorsmultiplatform
 
-import android.app.Activity
 import android.content.Context
 import android.hardware.Sensor
 import android.hardware.SensorEvent
 import android.hardware.SensorEventListener
 import android.hardware.SensorManager
 import kotlinx.coroutines.flow.MutableStateFlow
 
-actual class Sensors(activity: Activity) : SensorEventListener {
+actual class Sensors actual constructor(actual val activity: CommonActivity?) :
+    SensorEventListener {
 
     private var mSensorManager: SensorManager =
-        activity.getSystemService(Context.SENSOR_SERVICE) as SensorManager
+        activity?.getSystemService(Context.SENSOR_SERVICE) as SensorManager
 
     private var sAccelerometer: Sensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER)
     private var sGravity: Sensor = mSensorManager.getDefaultSensor(Sensor.TYPE_GRAVITY)

shared/src/commonMain/kotlin/it/matteocrippa/sensorsmultiplatform/CommonActivity.kt

@@ -0,0 +1,3 @@
+package it.matteocrippa.sensorsmultiplatform
+
+expect class CommonActivity

shared/src/commonMain/kotlin/it/matteocrippa/sensorsmultiplatform/Sensors.kt

@@ -7,7 +7,8 @@ data class SensorData(
     val gravity: AccelerometerData? = null
 )
 
-expect class Sensors {
+expect class Sensors(activity: CommonActivity? = null) {
+    val activity: CommonActivity?
     val data: CommonFlow<SensorData?>
     val isEnabled: Boolean
     fun start()

shared/src/iosMain/kotlin/it/matteocrippa/sensorsmultiplatform/CommonActivity.kt

@@ -0,0 +1,3 @@
+package it.matteocrippa.sensorsmultiplatform
+
+actual typealias CommonActivity = Any

shared/src/iosMain/kotlin/it/matteocrippa/sensorsmultiplatform/Sensors.kt

@@ -12,7 +12,7 @@ import platform.CoreMotion.CMDeviceMotion
 import platform.CoreMotion.CMMotionManager
 import platform.Foundation.NSOperationQueue
 
-actual class Sensors {
+actual class Sensors actual constructor(actual val activity: CommonActivity?) {
     private var _data = Channel<SensorData?>(Channel.BUFFERED)
 
     actual val data: CommonFlow<SensorData?>