首页 / 操作系统 / Linux / Android手机晃动事件实例
注册监听sm = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
int sensorType = Android.hardware.Sensor.TYPE_ACCELEROMETER;
sm.registerListener(mySensorEventListener, sm
.getDefaultSensor(sensorType),
SensorManager.SENSOR_DELAY_FASTEST);事件触发
public final SensorEventListener mySensorEventListener = new SensorEventListener() { @Override
public void onAccuracyChanged(android.hardware.Sensor sensor,
int accuracy) {
// TODO Auto-generated method stub } @Override
public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
if (event.sensor.getType() == android.hardware.Sensor.TYPE_ACCELEROMETER) { // 获取加速度传感器的三个参数 float x = event.values[SensorManager.DATA_X]; float y = event.values[SensorManager.DATA_Y]; float z = event.values[SensorManager.DATA_Z]; // 获取当前时刻的毫秒数 curTime = System.currentTimeMillis(); // 100毫秒检测一次 float aa = curTime - lastTime; if ((curTime - lastTime) > 100) { duration = (curTime - lastTime); // 看是不是刚开始晃动 if (last_x == 0.0f && last_y == 0.0f && last_z == 0.0f) { // last_x、last_y、last_z同时为0时,表示刚刚开始记录 initTime = System.currentTimeMillis(); } else { // 单次晃动幅度 shake = (Math.abs(x - last_x) + Math.abs(y - last_y) + Math
.abs(z - last_z));
// / duration * 1000; } // 把每次的晃动幅度相加,得到总体晃动幅度 totalShake += shake; // 判断是否为摇动 if (shake > 20) {
action();
onVibrator(); initShake();
}
last_x = x; last_y = y; last_z = z; lastTime = curTime; } }
}
};其中 onVibrator();是触发震动 : private void onVibrator() {
Vibrator vibrator = (Vibrator) context
.getSystemService(Context.VIBRATOR_SERVICE);
if (vibrator == null) {
Vibrator localVibrator = (Vibrator) context.getApplicationContext()
.getSystemService("vibrator");
vibrator = localVibrator;
}
vibrator.vibrate(100L);
}掉用系统震动这样反应快 ,自己写的long数组调用有时间间隔,效果不好 initShake();初始化事件触发的几个变量:
public void initShake() { lastTime = 0; duration = 0; curTime = 0; initTime = 0; last_x = 0.0f; last_y = 0.0f; last_z = 0.0f; shake = 0.0f; totalShake = 0.0f; }