fix: 🐛Fixed gyroscope initialization issue

Author: Sahil Totala

CHANGELOG.md

@@ -1,6 +1,8 @@
 # [4.0.2](https://github.com/SimformSolutionsPvtLtd/flutter_credit_card/tree/4.0.2) [UNRELEASED]
 
 - Fixed floating event stream bad state exception [#157](https://github.com/SimformSolutionsPvtLtd/flutter_credit_card/issues/157).
+- Fixed Gyroscope initialization issue [#173](https://github.com/SimformSolutionsPvtLtd/flutter_credit_card/issues/173).
+- Fixed Namespace Not Found issue [#176](https://github.com/SimformSolutionsPvtLtd/flutter_credit_card/issues/176).
 
 # [4.0.1](https://github.com/SimformSolutionsPvtLtd/flutter_credit_card/tree/4.0.1)
 

android/src/main/kotlin/com/simform/flutter_credit_card/gyroscope/GyroscopeStreamHandler.kt

@@ -15,17 +15,26 @@ internal class GyroscopeStreamHandler(
 ) : EventChannel.StreamHandler {
     private var sensorEventListener: SensorEventListener? = null
 
-    private val sensor: Sensor by lazy {
+    private val sensor: Sensor? by lazy {
         sensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE)
     }
 
     override fun onListen(arguments: Any?, events: EventSink) {
+        if (sensor == null) {
+            events.error("SENSOR_UNAVAILABLE", "Gyroscope sensor is not available on this device.", null)
+            return
+        }
         sensorEventListener = createSensorEventListener(events)
         // Gyroscope Event sample period set at 60 fps, specified in microseconds.
         sensorManager.registerListener(sensorEventListener, sensor, 16666)
     }
 
-    override fun onCancel(arguments: Any?) = sensorManager.unregisterListener(sensorEventListener)
+    override fun onCancel(arguments: Any?) {
+        if (sensorEventListener != null) {
+            sensorManager.unregisterListener(sensorEventListener)
+            sensorEventListener = null
+        }
+    }
 
     private fun createSensorEventListener(events: EventSink): SensorEventListener {
         return object : SensorEventListener {

lib/src/plugin/flutter_credit_card_method_channel.dart

@@ -51,7 +51,6 @@ class MethodChannelFlutterCreditCard extends FlutterCreditCardPlatform {
     );
 
     if (Platform.isIOS || Platform.isAndroid) {
-      await initiateEvents();
       _isGyroscopeAvailable = await _methodChannel!.invokeMethod<dynamic>(
             AppConstants.isGyroAvailableMethod,
           ) ??
@@ -60,6 +59,10 @@ class MethodChannelFlutterCreditCard extends FlutterCreditCardPlatform {
       // Other platforms should not use the gyroscope events.
       _isGyroscopeAvailable = false;
     }
+    // We will only initialize event if gyroScope is available.
+    if (_isGyroscopeAvailable) {
+      await initiateEvents();
+    }
   }
 
   @override