如何用android检测抖动(shake)事件

从代码的Angular 来看，您需要实现SensorListener:

public class ShakeActivity extends Activity implements SensorListener

您需要购买SensorManager:

sensorMgr = (SensorManager) getSystemService(SENSOR_SERVICE);

并用所需的标志注册此传感器:

sensorMgr.registerListener(this,
SensorManager.SENSOR_ACCELEROMETER,
SensorManager.SENSOR_DELAY_GAME);

在onSensorChange()方法中，您可以确定它是否是摇晃:

public void onSensorChanged(int sensor, float[] values) {
  if (sensor == SensorManager.SENSOR_ACCELEROMETER) {
    long curTime = System.currentTimeMillis();
    // only allow one update every 100ms.
    if ((curTime - lastUpdate) > 100) {
      long diffTime = (curTime - lastUpdate);
      lastUpdate = curTime;

      x = values[SensorManager.DATA_X];
      y = values[SensorManager.DATA_Y];
      z = values[SensorManager.DATA_Z];

      float speed = Math.abs(x+y+z - last_x - last_y - last_z) / diffTime * 10000;

      if (speed > SHAKE_THRESHOLD) {
        Log.d("sensor", "shake detected w/ speed: " + speed);
        Toast.makeText(this, "shake detected w/ speed: " + speed, Toast.LENGTH_SHORT).show();
      }
      last_x = x;
      last_y = y;
      last_z = z;
    }
  }
}

抖动阈值定义为:

private static final int SHAKE_THRESHOLD = 800;

还有一些其他的方法可以检测抖动.请看这个link.(如果该链接不工作或链接失效，则为look at this web archive).

看看这example个android shake detect listener.

Note: SensorListener已被弃用.我们可以用SensorEventListener代替.Here is a quick example using SensorEventListener.

谢谢.