Android?????????????

???????????? ???????[ 2014/8/11 17:16:36 ] ????????Android ?????? ???

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???????????????????????????????????????С?????ū??С?????????????????????????????????????????????????????????????Я???????????2002?????????????????Dell??PDA??2007??????????????N73??????2010????????????Milestone???????????????????????????????????????Щ???????????????????????????ν??????????????????????????????????????

????2008???????????????С?????Macbook??????????????С????????????????????????????????????????????????????????С?????????????????????????????????????????????д???????

??????????iPhone?????????????????????????????????????????????????iPhone?????????????????????????????????Android?????????????????????????Android????????????????????????Windows CE???????????????????????Milestone??????N73??????????????????

??????Android1.5???????????????????????????????????????????????????accelerometer???????????gyroscope???????????????????light????????????????magnetic field??????????????orientation???????????????pressure??????????????proximity??????????????temperature????

??????????Щ??????????????????????????????ó?????????????????????????????????????????????????????????????????????????????β??????????С??á?

????????????????????????????????????????????????????????????????????????Android??????????б??????????

???????????????????????嵥

???????????????????????

????1???????????? Lesson37_HelloSensor ????Activity????? mainActivity.java??

????2??UI???????main.xml?????????￡?
????XML/HTML????

<?xml version="1.0" encoding="utf-8"?>
<linearlayout android:layout_height="fill_parent" android:layout_width="fill_parent" android:orientation="vertical" xmlns:android="http://schemas.android.com/apk/res/android">
<textview android:layout_height="wrap_content" android:layout_width="fill_parent" android:text="" android:id="@+id/TextView01">
</textview></linearlayout>

????3??mainActivity.java?????????￡?
????

package basic.android.lesson37;

import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.widget.TextView;

public class MainActivity extends Activity {

        /** Called when the activity is first created. */
        @Override
        public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.main);

                //???????????UI?齨
                final TextView tx1 = (TextView) findViewById(R.id.TextView01);

                //?????????л?????????????
                SensorManager sm = (SensorManager) getSystemService(Context.SENSOR_SERVICE);

                //??????????????л?????????????б?
                List<sensor> allSensors = sm.getSensorList(Sensor.TYPE_ALL);

                //????ж??????????
                tx1.setText("???????????" + allSensors.size() + "??????????????????? ");

                //????????????????????
                for (Sensor s : allSensors) {

                        String tempString = " " + " ?豸?????" + s.getName() + " " + " ?豸?汾??" + s.getVersion() + " " + " ??????"
                                        + s.getVendor() + " ";

                        switch (s.getType()) {
                        case Sensor.TYPE_ACCELEROMETER:
                                tx1.setText(tx1.getText().toString() + s.getType() + " ??????????accelerometer" + tempString);
                                break;
                        case Sensor.TYPE_GYROSCOPE:
                                tx1.setText(tx1.getText().toString() + s.getType() + " ???????????gyroscope" + tempString);
                                break;
                        case Sensor.TYPE_LIGHT:
                                tx1.setText(tx1.getText().toString() + s.getType() + " ?????????????light" + tempString);
                                break;
                        case Sensor.TYPE_MAGNETIC_FIELD:
                                tx1.setText(tx1.getText().toString() + s.getType() + " ??????????magnetic field" + tempString);
                                break;
                        case Sensor.TYPE_ORIENTATION:
                                tx1.setText(tx1.getText().toString() + s.getType() + " ????????orientation" + tempString);
                                break;
                        case Sensor.TYPE_PRESSURE:
                                tx1.setText(tx1.getText().toString() + s.getType() + " ?????????pressure" + tempString);
                                break;
                        case Sensor.TYPE_PROXIMITY:
                                tx1.setText(tx1.getText().toString() + s.getType() + " ????????proximity" + tempString);
                                break;
                        case Sensor.TYPE_TEMPERATURE:
                                tx1.setText(tx1.getText().toString() + s.getType() + " ????????temperature" + tempString);
                                break;
                        default:
                                tx1.setText(tx1.getText().toString() + s.getType() + " δ???????" + tempString);
                                break;
                        }
                }

        }
}</sensor>
????4?????????Milestone?????????г????????????￡?