对android重力测试的一个疑问
之前有看过IBM Eyes 关于SensorManager的代码，但因为没有手机，没法测试，今天把代码发布到手机上了(android版本为1.5)，终于可以知道他的坐标（X，Y，Z）的重力位置，代码如下：/* ** IBMEyes.java * sample code for IBM Developerworks Article * Author: W. Frank Ableson * fableson@msiservices.com **/package com.msi.ibm.eyes;import android.app.Activity;import android.hardware.SensorListener;import android.hardware.SensorManager;import android.os.Bundle;import android.util.Log;import android.widget.TextView;public class IBMEyes extends Activity implements SensorListener {final String tag = "IBMEyes";SensorManager sm = null;TextView xViewA = null;TextView yViewA = null;TextView zViewA = null;TextView xViewO = null;TextView yViewO = null;TextView zViewO = null; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); sm = (SensorManager) getSystemService(SENSOR_SERVICE); setContentView(R.layout.main); xViewA = (TextView) findViewById(R.id.xbox); yViewA = (TextView) findViewById(R.id.ybox); zViewA = (TextView) findViewById(R.id.zbox); xViewO = (TextView) findViewById(R.id.xboxo); yViewO = (TextView) findViewById(R.id.yboxo); zViewO = (TextView) findViewById(R.id.zboxo); } public void onSensorChanged(int sensor, float[] values) { synchronized (this) { Log.d(tag, "onSensorChanged: " + sensor + ", x: " + values + ", y: " + values + ", z: " + values); if (sensor == SensorManager.SENSOR_ORIENTATION) { xViewO.setText("Orientation X: " + values); yViewO.setText("Orientation Y: " + values); zViewO.setText("Orientation Z: " + values); } if (sensor == SensorManager.SENSOR_ACCELEROMETER) { xViewA.setText("Accel X: " + values); yViewA.setText("Accel Y: " + values); zViewA.setText("Accel Z: " + values); } } } public void onAccuracyChanged(int sensor, int accuracy) { Log.d(tag,"onAccuracyChanged: " + sensor + ", accuracy: " + accuracy); } @Override protected void onResume() { super.onResume(); sm.registerListener(this, SensorManager.SENSOR_ORIENTATION | SensorManager.SENSOR_ACCELEROMETER, SensorManager.SENSOR_DELAY_NORMAL); } @Override protected void onStop() { sm.unregisterListener(this); super.onStop(); } }
我把手机平放在桌面，屏幕朝上，（x，y，z）的值分别为（0，0，-10）；
手机翻过来放（与平放相反，即屏幕朝下），（x，y，z）的值分别为（0，0，10）；
手机竖着放，（x，y，z）的值分别为（0，-10，0）；
手机倒过来放（与竖相反），（x，y，z）的值分别为（0，10，0）；
说明一下，实际输出为float值，为了好确认方向，我取整了；
对这个值有个什么疑问呢，与raymondlueng在博客写的正好相反，这就奇怪了。
页:
[1]