代码很简单，主要是一些常用传感器的监听，指南针还是挺好用的。
布局代码
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#fff" ><ImageView android:id="@+id/znzImage" android:layout_width="fill_parent" android:layout_height="fill_parent" android:scaleType="fitCenter" android:src="@drawable/compass" /></LinearLayout>
程序代码：
package zhinanzheng.com;import android.app.Activity;import android.hardware.Sensor;import android.hardware.SensorEvent;import android.hardware.SensorEventListener;import android.hardware.SensorManager;import android.os.Bundle;import android.view.animation.Animation;import android.view.animation.RotateAnimation;import android.widget.ImageView;/** * @author coderwry [email protected] * @version 1.0 */public class Zhinanzheng extends Activity implements SensorEventListener{ ImageView image; //指南针图片 float currentDegree = 0f; //指南针图片转过的角度 SensorManager mSensorManager; //管理器 /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); image = (ImageView)findViewById(R.id.znzImage); mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE); //获取管理服务 } @Override protected void onResume(){ super.onResume(); //注册监听器 mSensorManager.registerListener(this , mSensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION), SensorManager.SENSOR_DELAY_GAME); } //取消注册 @Override protected void onPause(){ mSensorManager.unregisterListener(this); super.onPause(); } @Override protected void onStop(){ mSensorManager.unregisterListener(this); super.onStop(); } //传感器值改变 @Override public void onAccuracyChanged(Sensor sensor, int accuracy) { // TODO Auto-generated method stub } //精度改变 @Override public void onSensorChanged(SensorEvent event) { // TODO Auto-generated method stub //获取触发event的传感器类型 int sensorType = event.sensor.getType(); switch(sensorType){ case Sensor.TYPE_ORIENTATION: float degree = event.values[0]; //获取z转过的角度 //穿件旋转动画 RotateAnimation ra = new RotateAnimation(currentDegree,-degree,Animation.RELATIVE_TO_SELF,0.5f ,Animation.RELATIVE_TO_SELF,0.5f); ra.setDuration(100);//动画持续时间 image.startAnimation(ra); currentDegree = -degree; break; } }}
效果图
