小编saf*_*ulm的帖子

我曾经使用eclipse与android sdk,但我刚刚下载了android studio.我想使用加速度计,但由于某种原因,我一直得到同样的问题."类或接口预期"我附上下面的代码,如果有人能给我一个问题的解决方案,我将被迫.

   package com.example.symbox.myapplication;

   import android.app.Activity;
   import android.content.Context;
   import android.hardware.Sensor;
   import android.hardware.SensorEvent;
   import android.hardware.SensorEventListener;
   import android.hardware.SensorManager;
   import android.support.v7.app.ActionBarActivity;
   import android.os.Bundle;
   import android.view.Menu;
   import android.view.MenuItem;
   import android.view.View;
   import android.widget.ImageView;
   import android.widget.TextView;


   public class MainActivity extends ActionBarActivity implements SensorEventListener {

   private float mLastX, mLastY, mLastZ;

   private boolean mInitialized;
   private SensorManager mSensorManager;
   private Sensor mAccelerometer;
   private final float NOISE = (float) 2.0;

   @Override
   public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mInitialized = false;

    mSensorManager = (SensorManager) getSystemService(Context.SEARCH_SERVICE);
    mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
    mSensorManager.registerListener(this, mAccelerometer, …