Android_开发 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）

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 extendsActivity implementsSensorEventListener {    privateTextView tvAccelerometer;    privateTextView tvMagentic;    privateTextView tvLight;    privateTextView tvOrientation;    privateTextView tvSensors;    @Override    publicvoid onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        // 获得SensorManager对象        SensorManager sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);        // 注册加速度传感器        sensorManager.registerListener(this,                sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),                SensorManager.SENSOR_DELAY_FASTEST);        // 注册磁场传感器        sensorManager.registerListener(this,                sensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD),                SensorManager.SENSOR_DELAY_FASTEST);        // 注册光线传感器        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);        // 获得当前手机支持的所有传感器        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    publicvoid onSensorChanged(SensorEvent event) {        // 通过getType方法获得当前传回数据的传感器类型        switch(event.sensor.getType()) {        caseSensor.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;        caseSensor.TYPE_LIGHT: // 处理光线传感器传回的数据            tvLight.setText("亮度："+ event.values[0]);            break;        caseSensor.TYPE_MAGNETIC_FIELD: // 处理磁场传感器传回的数据            String magentic ="磁场\n" + "X：" + event.values[0] +"\n" + "Y:"                    + event.values[1] +"\n" + "Z:"+ event.values[2] +"\n";            tvMagentic.setText(magentic);            break;        caseSensor.TYPE_ORIENTATION: // 处理方向传感器传回的数据            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    publicvoid onAccuracyChanged(Sensor sensor,int accuracy) {    }}
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