Android入门笔记2——获取传感器列表

 

UI界面：

 

Xml：

<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:paddingLeft="@dimen/activity_horizontal_margin"

android:paddingRight="@dimen/activity_horizontal_margin"

android:paddingTop="@dimen/activity_vertical_margin"

android:paddingBottom="@dimen/activity_vertical_margin"

android:background="@color/black"

tools:context=".MyActivity">

 

<LinearLayout

 

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:orientation="vertical">

 

<TextView

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="@string/listtile"

android:textColor="@color/white"

android:textSize="32dp"/>

<ScrollView

android:layout_width="fill_parent"

android:layout_height="wrap_content">

<LinearLayout

android:id="@+id/root"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:orientation="vertical"

>

 

</LinearLayout>

</ScrollView>

</LinearLayout>

 

</RelativeLayout>

 

Java：

LinearLayout sensoeLayout;

Boolean b=Boolean.TRUE;

 

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_my);

 

sensoeLayout=(LinearLayout)findViewById(R.id.root);

 

SensorManager sm = (SensorManager)getSystemService(Context.SENSOR_SERVICE);

 

List<Sensor> allSensors = sm.getSensorList(Sensor.TYPE_ALL);

 

int i=1;

for(Sensor s:allSensors)

{

 

TextView tv=new TextView(this);

tv.setId(i);

tv.setText(i + " Name: " + s.getName() + "\n Vendor:" + s.getVendor() +

"\n Type:" + s.getType() +

"\n MaximumRange:" + s.getMaximumRange()

+ "\n Version:" + s.getVersion() +

"\n Power:" + s.getPower()

);

 

 

tv.setTextSize(23);

 

if(b)

{

tv.setTextColor(Color.GREEN);

}

else

{

tv.setTextColor(Color.RED);

}

b=!b;

sensoeLayout.addView(tv);

i++;

 

 

}

上面代码使用了两个传感器库：

import android.hardware.Sensor;

import android.hardware.SensorManager;