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Code Issues Releases Wiki Activity

[platform_channels] adds EventChannel Demo (#462)

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This commit is contained in:
Ayush Bherwani
2020-06-13 05:28:43 +05:30
committed by GitHub
parent 084c532ac0
commit 87c9cfa995
6 changed files with 225 additions and 1 deletions
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37
platform_channels/android/app/src/main/kotlin/dev/flutter/platform_channels/AccelerometerStreamHandler.kt Normal file
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@@ -0,0 +1,37 @@
// Copyright 2020 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package dev.flutter.platform_channels
import android.hardware.Sensor
import android.hardware.SensorEvent
import android.hardware.SensorEventListener
import android.hardware.SensorManager
import io.flutter.plugin.common.EventChannel
class AccelerometerStreamHandler(sManager: SensorManager, s: Sensor) : EventChannel.StreamHandler, SensorEventListener {
private val sensorManager: SensorManager = sManager
private val accelerometerSensor: Sensor = s
private lateinit var eventSink: EventChannel.EventSink
override fun onListen(arguments: Any?, events: EventChannel.EventSink?) {
if (events != null) {
eventSink = events
sensorManager.registerListener(this, accelerometerSensor, SensorManager.SENSOR_DELAY_UI)
}
}
override fun onCancel(arguments: Any?) {
sensorManager.unregisterListener(this)
}
override fun onAccuracyChanged(sensor: Sensor?, accuracy: Int) {}
override fun onSensorChanged(sensorEvent: SensorEvent?) {
if (sensorEvent != null) {
val axisValues = listOf(sensorEvent.values[0], sensorEvent.values[1], sensorEvent.values[2])
eventSink.success(axisValues)
}
}
}

13
platform_channels/android/app/src/main/kotlin/dev/flutter/platform_channels/MainActivity.kt
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@@ -1,7 +1,15 @@
// Copyright 2020 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package dev.flutter.platform_channels
import android.content.Context
import android.hardware.Sensor
import android.hardware.SensorManager
import io.flutter.embedding.android.FlutterActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugin.common.EventChannel
import io.flutter.plugin.common.MethodChannel
class MainActivity : FlutterActivity() {
@@ -27,5 +35,10 @@ class MainActivity : FlutterActivity() {
}
}
}
val sensorManger: SensorManager = getSystemService(Context.SENSOR_SERVICE) as SensorManager
val accelerometerSensor: Sensor = sensorManger.getDefaultSensor(Sensor.TYPE_ACCELEROMETER)
EventChannel(flutterEngine.dartExecutor, "eventChannelDemo")
.setStreamHandler(AccelerometerStreamHandler(sensorManger, accelerometerSensor))
}
}