1. 添加权限到AndroidManifest.xml：

2. 在Activity中注册SensorEventListener：

public class MainActivity extends Activity implements SensorEventListener {
// ... @Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
// 不需要做处理 }

@Override  
public void onSensorChanged(SensorEvent event) {  
    if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {  
        float[] values = event.values;  
        // 获取x、y、z方向上的加速度值  
        float x = values[0];  
        float y = values[1];  
        float z = values[2];  

        // 计算加速度大小  
        float accelerationSquareRoot = (x * x + y * y + z * z)  
                / (SensorManager.GRAVITY_EARTH * SensorManager.GRAVITY_EARTH);  

        // 如果加速度大小大于2，则认为手机正在上下运动  
        if (accelerationSquareRoot >= 2) {  
            // do something  
        }  
    }  
}  

// 在onCreate()中注册SensorEventListener  
protected void onCreate(Bundle savedInstanceState) {  
    super.onCreate(savedInstanceState);  
    // ...  
    SensorManager sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);  
    Sensor sensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);  
    sensorManager.registerListener(this, sensor, SensorManager.SENSOR_DELAY_NORMAL);  
}  

// 在onStop()和onDestroy()中注销SensorEventListener  
protected void onStop() {  
    super.onStop();  
    // ...  
    SensorManager sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);  
    sensorManager.unregisterListener(this);  
}  

protected void onDestroy() {  
    // ...  
}  

}