Android 开发 — 展示传感器的值

• 不同传感器的 listener 只能单独写出，尝试用一个 listener 监听所有传感器的变化失败。
• 某个 listener 的监听速度设为 SENSOR_DELAY_FASTEST ，其他的也跟着变快。
• 温度传感器变化很慢，有时候没有读数。

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package com.ldq.sensor.detail;import android.app.Activity;import android.hardware.Sensor;import android.hardware.SensorEvent;import android.hardware.SensorEventListener;import android.hardware.SensorManager;import android.os.Bundle;import android.util.Log;import android.widget.TextView;public class ExSensorDetail extends Activity {	private TextView text1;	private TextView text2;	private TextView text3;	private TextView text4;	private TextView text5;	private TextView text6;	private TextView text7;	private TextView text8;	private TextView text9;	private TextView text10;	private SensorEventListener acc_listener = new SensorEventListener() {		@Override		public void onAccuracyChanged(Sensor sensor, int accuracy) {			// TODO Auto-generated method stub		}		@Override		public void onSensorChanged(SensorEvent event) {			// TODO Auto-generated method stub			Log.i("------", "" + "TYPE_ACCELEROMETER");			text1.setText("ACCELEROMETER_X: " + event.values[0]);			text2.setText("ACCELEROMETER_Y: " + event.values[1]);			text3.setText("ACCELEROMETER_Z: " + event.values[2]);		}	};	private SensorEventListener mag_listener = new SensorEventListener() {		@Override		public void onAccuracyChanged(Sensor sensor, int accuracy) {			// TODO Auto-generated method stub		}		@Override		public void onSensorChanged(SensorEvent event) {			// TODO Auto-generated method stub			text4.setText("MAGNETIC_FIELD_X: " + event.values[0]);			text5.setText("MAGNETIC_FIELD_Y: " + event.values[1]);			text6.setText("MAGNETIC_FIELD_Z: " + event.values[2]);		}	};	private SensorEventListener ori_listener = new SensorEventListener() {		@Override		public void onAccuracyChanged(Sensor sensor, int accuracy) {			// TODO Auto-generated method stub		}		@Override		public void onSensorChanged(SensorEvent event) {			// TODO Auto-generated method stub			text7.setText("ORIENTATION_X: " + event.values[0]);			text8.setText("ORIENTATION_Y: " + event.values[1]);			text9.setText("ORIENTATION_Z: " + event.values[2]);		}	};	private SensorEventListener tem_listener = new SensorEventListener() {		@Override		public void onAccuracyChanged(Sensor sensor, int accuracy) {			// TODO Auto-generated method stub		}		@Override		public void onSensorChanged(SensorEvent event) {			// TODO Auto-generated method stub			text10.setText("TEMPERATURE: " + event.values[0]);		}	};	/** Called when the activity is first created. */	@Override	public void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.main);		text1 = (TextView) findViewById(R.id.TextView01);		text2 = (TextView) findViewById(R.id.TextView02);		text3 = (TextView) findViewById(R.id.TextView03);		text4 = (TextView) findViewById(R.id.TextView04);		text5 = (TextView) findViewById(R.id.TextView05);		text6 = (TextView) findViewById(R.id.TextView06);		text7 = (TextView) findViewById(R.id.TextView07);		text8 = (TextView) findViewById(R.id.TextView08);		text9 = (TextView) findViewById(R.id.TextView09);		text10 = (TextView) findViewById(R.id.TextView01);		SensorManager sm = (SensorManager) getSystemService(SENSOR_SERVICE);		sm.registerListener(acc_listener, sm				.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),				SensorManager.SENSOR_DELAY_NORMAL);		sm.registerListener(mag_listener, sm				.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD),				SensorManager.SENSOR_DELAY_NORMAL);		sm.registerListener(ori_listener, sm				.getDefaultSensor(Sensor.TYPE_ORIENTATION),				SensorManager.SENSOR_DELAY_NORMAL);		sm.registerListener(tem_listener, sm				.getDefaultSensor(Sensor.TYPE_TEMPERATURE),				SensorManager.SENSOR_DELAY_NORMAL);	}}

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?main.xml 文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout android:id="@+id/LinearLayout01"	android:layout_width="fill_parent" android:layout_height="fill_parent"	xmlns:android="http://schemas.android.com/apk/res/android"	android:orientation="vertical">	<TextView android:text="@+id/TextView01" android:id="@+id/TextView01"		android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>	<TextView android:text="@+id/TextView02" android:id="@+id/TextView02"		android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>	<TextView android:text="@+id/TextView03" android:id="@+id/TextView03"		android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>	<TextView android:text="@+id/TextView04" android:id="@+id/TextView04"		android:layout_width="wrap_content" android:layout_height="wrap_content"		android:layout_marginTop="10px"></TextView>	<TextView android:text="@+id/TextView05" android:id="@+id/TextView05"		android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>	<TextView android:text="@+id/TextView06" android:id="@+id/TextView06"		android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>	<TextView android:text="@+id/TextView07" android:id="@+id/TextView07"		android:layout_width="wrap_content" android:layout_height="wrap_content"		android:layout_marginTop="10px"></TextView>	<TextView android:text="@+id/TextView08" android:id="@+id/TextView08"		android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>	<TextView android:text="@+id/TextView09" android:id="@+id/TextView09"		android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>	<TextView android:text="@+id/TextView10" android:id="@+id/TextView10"		android:layout_width="wrap_content" android:layout_height="wrap_content"		android:layout_marginTop="10px"></TextView></LinearLayout>

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