humidity sensor for android

Android acceleration sensor: The implementation of the shake function and android Acceleration I. Principles: The shake function in the Android mobile phone is already very common. Recently, I came into contact with this function. The principle is very simple: using an acceleration

Let's take a look at the sensormanager code. Sensormanager framework Layer Code @ Frameworks/base/CORE/Java/Android/hardware/sensormanager. Java Public sensormanager (lodomainmainloiter) {mmainloiter = mainloiter; // As mentioned above, this is the activity's lodomainsynchronized (slisteners) {If (! Ssensormoduleinitialized) {ssensormoduleinitialized = true; nativeclassinit (); // it seems that the local method is called to initialize swindowmanager

Main. xml Main. Java/* * * Ibmeyes. Java * Sample code for IBM developerworks article * Author: W. Frank ableson * Fableson@msiservices.com * */ Package com. MSI. IBM. eyes; Import Android. App. activity;Import Android. OS. Bundle;Import Android. util. log;Import Android. widget. textview;Import

is the Android system architecture diagram, from which you can tell that sensor must penetrate all levels of the architecture. According to the architecture hierarchy, the sensor architecture is analyzed in five ways:1. The app layer of the sensor architecture;2. The framework layer of the

Android motion sensor Android motion sensor The Android platform supports some sensors used to monitor device movements (five such sensors ). Two of them are pure hardware sensors. The other three (Gravity Sensors, linear acceleration sensors, and Rotation Vector Sensors) ma

Sensor local encapsulation class sensordevice Sensordevice is the abstract type encapsulation of the sensorservice to the sensor device in local code. It encapsulates the hardware operations of the sensor hardware, which inherits the singleton class, the getinstance method is used to obtain the device operation object in singleton mode: @ Frameworks/base/services

JAVA programWe use the sensor interface to register the SensorListener as follows:**************************************** **********************ApiDemo:MGraphView = new GraphView (this );MSensorManager. registerListener (mGraphView ,....);**************************************** **********************The listener here is the control that changes when the sensor status changes.Reload the onSensorChanged and

for sensors that are monitored by this application (see below for more information). The parameters of the method include: An integer indicating the change of the sensor; a floating-point value array that represents the sensor data itself. Some sensors provide only one data value, while others provide three floating-point values. Both the direction and accelerometer sensors provide three data values.The on

Android location sensor The Android platform provides two sensors to determine the location of the device. These two sensors are magnetic field sensors and direction sensors. The Android platform also provides a sensor (proximity sensor