中财网空姐肉丝脱鞋:DSALK Android传感器API之：温度传感器SensorTemperature功能源码
来源：百度文库 编辑：中财网 时间：2024/04/28 00:00:45
个人觉得温度传感器的应用频率应该不会太高，这也是部分Android手机直接将这个功能屏蔽掉的原因所在。不过从创意角度出发，基于这个传感器可以开发出一些有意思的应用，比如手机温度计、室温监测等等。。
个性化的应用就不说了，具体的说实话我也没做，只是把Rexsee的功能源码分享出来，回头要是有应用了再分享。和之前的帖子里提到的一样，Android平台带有大量的传感器功能，相关的原生源码可以在Rexsee的开源社区找到：http://www.rexsee.com/
SensorTemperature功能源码如下 标签： Android Rexsee
个性化的应用就不说了，具体的说实话我也没做，只是把Rexsee的功能源码分享出来，回头要是有应用了再分享。和之前的帖子里提到的一样，Android平台带有大量的传感器功能，相关的原生源码可以在Rexsee的开源社区找到：http://www.rexsee.com/
SensorTemperature功能源码如下 标签： Android Rexsee
代码片段(1)
[代码] RexseeSensorTemperature.java
view sourceprint?001/* 002* Copyright (C) 2011 The Rexsee Open Source Project 003* 004* Licensed under the Rexsee License, Version 1.0 (the "License"); 005* you may not use this file except in compliance with the License. 006* You may obtain a copy of the License at 007* 008* http://www.rexsee.com/CN/legal/license.html 009* 010* Unless required by applicable law or agreed to in writing, software 011* distributed under the License is distributed on an "AS IS" BASIS, 012* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013* See the License for the specific language governing permissions and 014* limitations under the License. 015*/016 017package rexsee.sensor; 018 019import rexsee.core.browser.JavascriptInterface; 020import rexsee.core.browser.RexseeBrowser; 021import android.content.Context; 022import android.hardware.Sensor; 023import android.hardware.SensorEvent; 024import android.hardware.SensorEventListener; 025import android.hardware.SensorManager; 026 027public class RexseeSensorTemperature implements JavascriptInterface { 028 029 private static final String INTERFACE_NAME = "Temperature"; 030 @Override 031 public String getInterfaceName() { 032 return mBrowser.application.resources.prefix + INTERFACE_NAME; 033 } 034 @Override 035 public JavascriptInterface getInheritInterface(RexseeBrowser childBrowser) { 036 return this; 037 } 038 @Override 039 public JavascriptInterface getNewInterface(RexseeBrowser childBrowser) { 040 return new RexseeSensorTemperature(childBrowser); 041 } 042 043 public static final String EVENT_ONTEMPERATURECHANGED = "onTemperatureChanged"; 044 045 private final Context mContext; 046 private final RexseeBrowser mBrowser; 047 private final SensorManager mSensorManager; 048 private final SensorEventListener mSensorListener; 049 private final Sensor mSensor; 050 051 private int mRate = SensorManager.SENSOR_DELAY_NORMAL; 052 private int mCycle = 100; //milliseconds 053 private int mEventCycle = 100; //milliseconds 054 private float mAccuracy = 0; 055 056 private long lastUpdate = -1; 057 private long lastEvent = -1; 058 059 private float value = -999f; 060 061 public RexseeSensorTemperature(RexseeBrowser browser) { 062 mContext = browser.getContext(); 063 mBrowser = browser; 064 browser.eventList.add(EVENT_ONTEMPERATURECHANGED); 065 066 mSensorManager = (SensorManager) mContext.getSystemService(Context.SENSOR_SERVICE); 067 068 mSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_TEMPERATURE); 069 070 mSensorListener = new SensorEventListener() { 071 @Override 072 public void onAccuracyChanged(Sensor sensor, int accuracy) { 073 } 074 @Override 075 public void onSensorChanged(SensorEvent event) { 076 if (event.sensor.getType() != Sensor.TYPE_TEMPERATURE) return; 077 long curTime = System.currentTimeMillis(); 078 if (lastUpdate == -1 || (curTime - lastUpdate) > mCycle) { 079 lastUpdate = curTime; 080 float lastValue = value; 081 value = event.values[SensorManager.DATA_X]; 082 if (lastEvent == -1 || (curTime - lastEvent) > mEventCycle) { 083 if (Math.abs(value - lastValue) > mAccuracy) { 084 lastEvent = curTime; 085 mBrowser.eventList.run(EVENT_ONTEMPERATURECHANGED); 086 } 087 } 088 } 089 } 090 }; 091 092 } 093 094 public String getLastKnownValue() { 095 return (value == -999) ? "null" : String.valueOf(value); 096 } 097 098 public void setRate(String rate) { 099 mRate = SensorRate.getInt(rate); 100 } 101 public String getRate() { 102 return SensorRate.getString(mRate); 103 } 104 public void setCycle(int milliseconds) { 105 mCycle = milliseconds; 106 } 107 public int getCycle() { 108 return mCycle; 109 } 110 public void setEventCycle(int milliseconds) { 111 mEventCycle = milliseconds; 112 } 113 public int getEventCycle() { 114 return mEventCycle; 115 } 116 public void setAccuracy(float value) { 117 mAccuracy = Math.abs(value); 118 } 119 public float getAccuracy() { 120 return mAccuracy; 121 } 122 123 public boolean isReady() { 124 return (mSensor == null) ? false : true; 125 } 126 public void start() { 127 if (isReady()) { 128 mSensorManager.registerListener(mSensorListener, mSensor, mRate); 129 } else { 130 mBrowser.exception(getInterfaceName(), "Temperature sensor is not found."); 131 } 132 } 133 public void stop() { 134 if (isReady()) { 135 mSensorManager.unregisterListener(mSensorListener); 136 } 137 } 138 139}