相关疑难解决方法(0)

我已阅读有关访问手机加速度计(加速度和方向)值的文章/教程.我正在尝试构建一个简单的应用程序,我可以使用这些值移动球图像.这是我的代码:

import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.OvalShape;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

public class Accelerometer extends Activity implements SensorEventListener {
    /** Called when the activity is first created. */
     CustomDrawableView mCustomDrawableView = null; 
     ShapeDrawable mDrawable = new ShapeDrawable(); 
      int x ; 
       int y ;

    private SensorManager sensorManager = null;

       /** Called when the activity is first created. */
       @Override
       public void onCreate(Bundle savedInstanceState) {

           super.onCreate(savedInstanceState);
           // Get …