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Android入门笔记2——获取传感器列表
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UI界面:
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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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}
上面代码使用了两个传感器库:
import android.hardware.Sensor;
import android.hardware.SensorManager;
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