Android 开发

Android 开发包标准有8个传感器：

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• Sensor.TYPE_ACCELEROMETER
  • 加速度计 (X, Y, Z) m/s2
• Sensor.TYPE_GYROSCOPE
  • 陀螺仪 (X, Y, Z) degrees
• Sensor.TYPE_LIGHT
  • 光照 (single) lux
• Sensor.TYPE_MAGNETIC_FIELD
  • 磁力计 (X, Y, Z) microteslas
• Sensor.TYPE_ORIENTATION
  • 方位传感器 (X, Y, Z) degrees
• Sensor.TYPE_PRESSURE
  • 压力传感器 (single) kilopascals 测量加在手机设备上的压力
• Sensor.TYPE_PROXIMITY
  • 距离传感器 (single) meters 典型应用为接听电话时，根据光照，声音估计距离
• Sensor.TYPE_TEMPERATURE
  • 温度传感器 (single) degrees Celsius 电池温度，或是具体传感器温度，看具体实现
    

手机型号不同，硬件实现有所区别。

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读取传感器代码如下：

package com.ldq.sensor;

import java.util.List;

import android.app.Activity;
import android.hardware.Sensor;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.widget.LinearLayout;
import android.widget.TextView;

public class ExSensor extends Activity {

	private LinearLayout layout;

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		layout = (LinearLayout) findViewById(R.id.LinearLayout01);

		SensorManager sm = (SensorManager) getSystemService(SENSOR_SERVICE);
		List<Sensor> list = sm.getSensorList(Sensor.TYPE_ALL);
		TextView text = new TextView(this);
		text.setText("传感器数量：" + list.size());
		layout.addView(text);

		TextView[] name = new TextView[list.size()];
		for (int i = 0; i < list.size(); i++) {
			name[i] = new TextView(this);
			name[i].setText((i + 1) + " : " + list.get(i).getName());
			layout.addView(name[i]);
		}

	}
}

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