SENSOR_TYPE_ORIENTATION這個android 2.2之后就不推薦用了?。?！





手機狀況

數(shù)值狀況

數(shù)值范圍

手機程度放置，頂部指向正北方

x、y、z偏向值為0

0

程度逆時針扭轉(zhuǎn)

x賡續(xù)削減

360 ~ 0

程度順時針扭轉(zhuǎn)

x賡續(xù)增大年夜

0 ~ 360

當(dāng)手機左側(cè)抬起時

z賡續(xù)削減

0 ~ -180

當(dāng)手機右側(cè)抬起時 

z賡續(xù)增大年夜

0 ~ 180

當(dāng)手機頂部抬起時  

y賡續(xù)削減

0 ~ -180

當(dāng)手機底部抬起時  

y賡續(xù)增大年夜

0 ~ 180

 
  
    經(jīng)由實驗，我們發(fā)明當(dāng)手機頂部指向正北方時偏向值為0，頂部指向正東方時偏向值為90，頂部指向正南邊時偏向值為180，頂部指向正西方時偏向值為270。根據(jù)這些數(shù)據(jù)我們就可以根據(jù)偏向值典范圍盤端當(dāng)前我們的方位，可以肯定指南針的讀數(shù)。
示例代碼：

package com.example.sensors;

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.util.Log;
import android.view.Menu;
import android.widget.TextView;

public class MainActivity extends Activity implements SensorEventListener{

	private TextView changeText;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		SensorManager sensorManager= (SensorManager) getSystemService(SENSOR_SERVICE) ;
		Sensor gyposcope = sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);
		sensorManager.registerListener(this, gyposcope, SensorManager.SENSOR_DELAY_GAME);
		changeText = (TextView) findViewById(R.id.changeText);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	@Override
	public void onSensorChanged(SensorEvent event) {
		Log.i("test", event.values.toString());
		changeText.setText(event.values[0]+" "+event.values[1]+" "+event.values[2]);
	}

	@Override
	public void onAccuracyChanged(Sensor sensor, int accuracy) {
	}



}