Android入門筆記2——擷取感應器列表

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UI介面：

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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">

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<LinearLayout

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android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:orientation="vertical">

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<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"

>

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</LinearLayout>

</ScrollView>

</LinearLayout>

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</RelativeLayout>

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Java：

LinearLayout sensoeLayout;

Boolean b=Boolean.TRUE;

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@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_my);

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

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

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

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int i=1;

for(Sensor s:allSensors)

{

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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()

);

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tv.setTextSize(23);

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if(b)

{

tv.setTextColor(Color.GREEN);

}

else

{

tv.setTextColor(Color.RED);

}

b=!b;

sensoeLayout.addView(tv);

i++;

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}

上面代碼使用了兩個感應器庫：

import android.hardware.Sensor;

import android.hardware.SensorManager;

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