Android实现摇晃手机的监听(摇一摇)

背景

项目中，需要在某些界面监听用户摇晃动作做出相应的反应。下面分Kotlin和Java两种给出具体的代码。

实现方案（Kotlin）

1. 新增SensorManagerHelper.kt

class SensorManagerHelper(private val context: Context) : SensorEventListener {// 速度阈值，当摇晃速度达到这值后产生作用private val SPEED_SHRESHOLD = 5000// 两次检测的时间间隔private val UPTATE_INTERVAL_TIME = 50// 传感器管理器private var sensorManager: SensorManager? = null// 传感器private var sensor: Sensor? = null// 重力感应监听器private var onShakeListener: OnShakeListener? = null// 手机上一个位置时重力感应坐标private var lastX: Float = 0.toFloat()private var lastY: Float = 0.toFloat()private var lastZ: Float = 0.toFloat()// 上次检测时间private var lastUpdateTime: Long = 0init {start()}/*** 开始检测*/fun start() {// 获得传感器管理器sensorManager = context.getSystemService(Context.SENSOR_SERVICE) as SensorManagerif (sensorManager != null) {// 获得重力传感器sensor = sensorManager!!.getDefaultSensor(Sensor.TYPE_ACCELEROMETER)}// 注册if (sensor != null) {sensorManager!!.registerListener(this, sensor,SensorManager.SENSOR_DELAY_GAME)}}/*** 停止检测*/fun stop() {sensorManager!!.unregisterListener(this)}// 摇晃监听接口interface OnShakeListener {fun onShake()}// 设置重力感应监听器fun setOnShakeListener(listener: OnShakeListener) {onShakeListener = listener}/*** 重力感应器感应获得变化数据* android.hardware.SensorEventListener#onSensorChanged(android.hardware* .SensorEvent)*/override fun onSensorChanged(event: SensorEvent) {// 现在检测时间val currentUpdateTime = System.currentTimeMillis()// 两次检测的时间间隔val timeInterval = currentUpdateTime - lastUpdateTime// 判断是否达到了检测时间间隔if (timeInterval < UPTATE_INTERVAL_TIME) return// 现在的时间变成last时间lastUpdateTime = currentUpdateTime// 获得x,y,z坐标val x = event.values[0]val y = event.values[1]val z = event.values[2]// 获得x,y,z的变化值val deltaX = x - lastXval deltaY = y - lastYval deltaZ = z - lastZ// 将现在的坐标变成last坐标lastX = xlastY = ylastZ = zval speed = Math.sqrt((deltaX * deltaX + deltaY * deltaY + deltaZ * deltaZ).toDouble()) / timeInterval * 10000// 达到速度阀值，发出提示if (speed >= SPEED_SHRESHOLD) {onShakeListener!!.onShake()}}override fun onAccuracyChanged(sensor: Sensor, accuracy: Int) {}}

2. 调用

SensorManagerHelper sensorHelper = SensorManagerHelper(this)sensorHelper.setOnShakeListener(object : SensorManagerHelper.OnShakeListener {override fun onShake() {Toast.makeText(this@MainActivity, "不要摇俺啦，好晕哦！", Toast.LENGTH_SHORT).show()}})

实现方案（Java）

1. 新增SensorManagerHelper.java

public class SensorManagerHelper implements SensorEventListener {// 速度阈值，当摇晃速度达到这值后产生作用private final int SPEED_SHRESHOLD = 5000;// 两次检测的时间间隔private final int UPTATE_INTERVAL_TIME = 50;// 传感器管理器private SensorManager sensorManager;// 传感器private Sensor sensor;// 重力感应监听器private OnShakeListener onShakeListener;// 上下文对象contextprivate Context context;// 手机上一个位置时重力感应坐标private float lastX;private float lastY;private float lastZ;// 上次检测时间private long lastUpdateTime;public SensorManagerHelper(Context context) {this.context = context;start();}/*** 开始检测*/public void start() {// 获得传感器管理器sensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);if (sensorManager != null) {// 获得重力传感器sensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);}// 注册if (sensor != null) {sensorManager.registerListener(this, sensor,SensorManager.SENSOR_DELAY_GAME);}}/*** 停止检测*/public void stop() {sensorManager.unregisterListener(this);}/*** 摇晃监听接口*/public interface OnShakeListener {void onShake();}/*** 设置重力感应监听器*/public void setOnShakeListener(OnShakeListener listener) {onShakeListener = listener;}@Overridepublic void onAccuracyChanged(Sensor sensor, int accuracy) {}/*** 重力感应器感应获得变化数据* android.hardware.SensorEventListener#onSensorChanged(android.hardware* .SensorEvent)*/@Overridepublic void onSensorChanged(SensorEvent event) {// 现在检测时间long currentUpdateTime = System.currentTimeMillis();// 两次检测的时间间隔long timeInterval = currentUpdateTime - lastUpdateTime;// 判断是否达到了检测时间间隔if (timeInterval < UPTATE_INTERVAL_TIME) return;// 现在的时间变成last时间lastUpdateTime = currentUpdateTime;// 获得x,y,z坐标float x = event.values[0];float y = event.values[1];float z = event.values[2];// 获得x,y,z的变化值float deltaX = x - lastX;float deltaY = y - lastY;float deltaZ = z - lastZ;// 将现在的坐标变成last坐标lastX = x;lastY = y;lastZ = z;double speed = Math.sqrt(deltaX * deltaX + deltaY * deltaY + deltaZ* deltaZ)/ timeInterval * 10000;// 达到速度阀值，发出提示if (speed >= SPEED_SHRESHOLD) {onShakeListener.onShake();}}
}

2. 调用

SensorManagerHelper sensorHelper = new SensorManagerHelper(this);
sensorHelper.setOnShakeListener(() -> ToastUtil.showToast(ContextUtil.get(), "不要摇俺啦，好晕哦！"));

onDestroy方法中停止监听
sensorHelper.stop()

如果只是某个界面监听摇晃，那就只在某个界面中增加；如果是整个app监听，建议在Application中添加监听(因app全生命周期监听，故不再需要增加停止监听方法)。

3. 效果图（摇晃手机后）
   
4. demo代码（Kotlin）
   https://gitee.com/hspbc/shakeMonitorDemo