Android开发(26) 看看手机里都有什么传感器

概述

通过代码查看手机里的传感器列表，看看手机里都有哪种传感器。

代码

    package zyf.demo.sensordemo;
    
    import java.util.List;

    import android.hardware.Sensor;
    import android.hardware.SensorManager;
    import android.os.Bundle;
    import android.app.Activity;
    import android.content.Context;
    import android.view.Menu;
    import android.widget.TextView;
    
    public class MainActivity extends Activity {
        TextView tx1 = null;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            tx1 = (TextView) findViewById(R.id.txt);
            showIt();
        }
    
        public void showIt() {
            //获得传感器管理器
            SensorManager sm = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
            List allSensors = sm.getSensorList(Sensor.TYPE_ALL);
    
            StringBuilder sb = new StringBuilder();
            // 显示有多少个传感器
            sb.append("\t该手机有" + allSensors.size() + "个传感器：\n\n");
    
            String typeName = "";
            // 显示每个传感器的具体信息
            for (Sensor s : allSensors) {
                typeName = SensorTypeName.getSensorTypeName(s.getType());
                sb.append(String.format("\t类型:%s\n", typeName));
                sb.append(String.format("\t设备名称:%s\n", s.getName()));
                sb.append(String.format("\t设备版本:%s\n", s.getVersion()));
                sb.append(String.format("\t供应商:%s\n", s.getVendor()));
                sb.append("\n");
            }// end for
    
            tx1.setText(sb.toString());
        }
    
        static class SensorTypeName {
            private static String[] itsNames;
            
            static {
                itsNames = new String[20];
                itsNames[0] = "未知";
                itsNames[Sensor.TYPE_ACCELEROMETER] = "加速度";
                itsNames[Sensor.TYPE_MAGNETIC_FIELD] = "磁力";
                itsNames[Sensor.TYPE_ORIENTATION] = "方向";
                itsNames[Sensor.TYPE_GYROSCOPE] = "陀螺仪";
                itsNames[Sensor.TYPE_LIGHT] = "光线感应";
                itsNames[Sensor.TYPE_PRESSURE] = "压力";
                itsNames[Sensor.TYPE_TEMPERATURE] = "温度";
                itsNames[Sensor.TYPE_PROXIMITY] = "接近,距离传感器";
                itsNames[Sensor.TYPE_GRAVITY] = "重力";
                itsNames[Sensor.TYPE_LINEAR_ACCELERATION] = "线性加速度";
                itsNames[Sensor.TYPE_ROTATION_VECTOR] = "旋转矢量";
                itsNames[Sensor.TYPE_RELATIVE_HUMIDITY] = "TYPE_RELATIVE_HUMIDITY";
                itsNames[Sensor.TYPE_AMBIENT_TEMPERATURE] = "TYPE_AMBIENT_TEMPERATURE";
                itsNames[13] = "TYPE_AMBIENT_TEMPERATURE";
                itsNames[14] = "TYPE_MAGNETIC_FIELD_UNCALIBRATED";
                //itsNames[Sensor.TYPE_GAME_ROTATION_VECTOR] = "TYPE_GAME_ROTATION_VECTOR";
            }
            
            public static String getSensorTypeName(int type){
                if(type > 0 && type < itsNames.length){
                    return itsNames[type];
                }
                return "未知";
            }
        }
    
        @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;
        }
    
    }