Android传感器（加速度传感器，磁场传感器，光线传感器，方向传感器）详解

package mobile.android.sensor;

import java.util.List;

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.widget.TextView;

public class Main extends Activity implements SensorEventListener {

private TextView tvAccelerometer;

private TextView tvMagentic;

private TextView tvLight;

private TextView tvOrientation;

private TextView tvSensors;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

// 获得SensorManager对象

SensorManager sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);

// 注册加速传感器

sensorManager.registerListener(this,

sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),

SensorManager.SENSOR_DELAY_FASTEST);

// 磁场传感器注册

sensorManager.registerListener(this,

sensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD),

SensorManager.SENSOR_DELAY_FASTEST);

// 注册光传感器

sensorManager.registerListener(this,

sensorManager.getDefaultSensor(Sensor.TYPE_LIGHT),

SensorManager.SENSOR_DELAY_FASTEST);

// 注册方向传感器

sensorManager.registerListener(this,

sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION),

SensorManager.SENSOR_DELAY_FASTEST);

tvAccelerometer = (TextView) findViewById(R.id.tvAccelerometer);

tvMagentic = (TextView) findViewById(R.id.tvMagentic);

tvLight = (TextView) findViewById(R.id.tvLight);

tvOrientation = (TextView) findViewById(R.id.tvOrientation);

tvSensors = (TextView) findViewById(R.id.tvSensors);

// 所有获得当前手机支持的传感器

List sensors = sensorManager.getSensorList(Sensor.TYPE_ALL);

for (Sensor sensor : sensors) {

// 输出当前传感器的名称

tvSensors.append(sensor.getName() "\n");

}

}

@Override

public void onSensorChanged(SensorEvent event) {

// 通过getType获取当前传回数据传感器类型的方法

switch (event.sensor.getType()) {

case Sensor.TYPE_ACCELEROMETER: // 处理加速度传感器传回的数据

String accelerometer = "加速度\n" "X：" event.values[0] "\n"

"Y:" event.values[1] "\n" "Z:" event.values[2]

"\n";

tvAccelerometer.setText(accelerometer);

break;

case Sensor.TYPE_LIGHT: // 处理光传感器传回的数据

tvLight.setText("亮度：" event.values[0]);

break;

case Sensor.TYPE_MAGNETIC_FIELD: // 磁场传感器传回的数据处理

String magentic = "磁场\n" "X：" event.values[0] "\n" "Y:"

event.values[1] "\n" "Z:" event.values[2] "\n";

tvMagentic.setText(magentic);

break;

case Sensor.TYPE_ORIENTATION: // 传感器传回的数据处理方向

String orientation = "方向\n" "X：" event.values[0] "\n" "Y:"

event.values[1] "\n" "Z:" event.values[2] "\n";

tvOrientation.setText(orientation);

break;

}

}

@Override

public void onAccuracyChanged(Sensor sensor, int accuracy) {

}

}