获取系统传感器

1.控件Layout

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    >    <TextView        android:id="@+id/tv"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Hello World!" />
2.Activity里

public class MainActivity extends AppCompatActivity {    TextView tv;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        tv=(TextView) findViewById(R.id.tv);
//获取传感器管理
TYPE_ACCELEROMETER         //加速度传感器（硬件）TYPE_MAGNETIC_FIELD        //磁场传感器（硬件）TYPE_ORIENTATION           //方向传感器（软件传感器，数据来自重力和磁场传感器）TYPE_GYROSCOPE             //陀螺仪传感器（硬件）TYPE_LIGHT                 //光线传感器（硬件）TYPE_PRESSURE              //压力传感器（硬件）TYPE_PROXIMITY             //临近传感器（硬件）TYPE_GRAVITY               //重场传感器（硬件或软件）TYPE_LINEAR_ACCELERATION   //线性加速度传感器（硬件或软件）TYPE_ROTATION_VECTOR       //旋转矢量传感器（硬件或软件）TYPE_RELATIVE_HUMIDITY     //湿度传感器（硬件）TYPE_AMBIENT_TEMPERATURE   //温度传感器（硬件）TYPE_TEMPERATURE           //温度传感器（硬件），从Android4.0开始被TYPE_AMBIENT_TEMPERATURE取代
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        SensorManager manager = (SensorManager) getSystemService(SENSOR_SERVICE);        List<Sensor> sensotList=manager.getSensorList(Sensor.TYPE_ALL);        for (Sensor sensor:sensotList){
            tv.append("\r\n"+sensor.getName());//在tv中展示系统的所有传感器列表        }