android orientation sensor

Package com. android. ctbri. SensorTest; Import java. util. Random; Import android. app. Activity;Import android. hardware. Sensor;Import android. hardware. SensorEvent;Import android. hardware. SensorEventListener;Import

Recently, when we solved a g-sensor bug in 2.2, we accidentally found that 2.3 has actually optimized this type of problem. The source code of 2.3 has helped me a lot. 2.3 is mainly an extension of 180 ° for the rotating screen, which may have no practical effect on mobile phones, but it is meaningful for tablet computers !!! The first is int getcurrentrotation (), not only for mrotation, but also for lastrotation. This alone makes it easier for us t

Modules that need to be calledThe I/O used in this article mainly consists of the following three parts? I²c interface? UART interface? USB interfaceThe hardware peripherals you need to use are as followsGrove Digital Light SensorThe UART transfer usb1.8v line mentioned aboveCustomization of the kernelFirst we need to reconfigure the kernel to add our device driversRecompile the kernelDownload our latest Android 5.1 version on the 96board websiteThe o

::recvobjects (Msensorchannel, Mrecbuffer, max_receive_buffer_event_count); if (Err In other words, sensorevent is stored in the asensorevent structure. Find prototypes.Frameworks/native/include/android/sensor.h/* note:must Match hardware/sensors.h */typedef struct asensorevent {int32_t version;/* sizeof (struct asensorevent) */int32_t Sensor int32_t type; int32_t reserved0;

) {Sensormanager.unregisterlistener (listener); }Super. OnDestroy (); }/** * Sensor trigger * / PrivateSensoreventlistener listener =NewSensoreventlistener () { Public void onsensorchanged(Sensorevent event) {floatXValue = Math.Abs (event.values[0]);//X-Axis direction acceleration floatYvalue = Math.Abs (event.values[1]);//Y-Axis direction acceleration floatZvalue = Math.Abs (event.values[2]);//z-axis direction acceleration

Recently in 2.2 to solve a g-sensor bug, the unexpected discovery of 2.3 in fact, this kind of problem has been optimized for reference to 2.3 of the source code, gave me a lot of help. 2.3 is mainly extended to the expansion of the rotary screen 180°, this may not be practical for the mobile phone, but for the tablet, but it's meaningful!!! The first is int getcurrentrotation (), not only for mrotation, but also added to the lastrotation of the eleg

This article from http://blog.csdn.net/hellogv/, reference must indicate the source! Last time, we introduced how Android uses a microphone to collect and display analog signals. This collection method is applicable to scenarios where no I/O control is required and signals are read. If the sensor itself needs to contain a control circuit (for example, the acquisition of blood oxygen signals requires infrare

);Building Sensor objectsSensor s=manager.getdefaultsensor (Sensor.type_accelerometer);//Accelerator object, and other very many objectsSet up monitoring, when the value in the sensor changes, the self-active monitoring feedbackManager.registerlistener (New Sensoreventlistener () {@Overridepublic void Onsensorchanged (Sensorevent event) {if (flag) {if (starttime==-1) {Starttime=system.currenttimemillis ();}

Android Direction sensor Sensor.type_orientation has been in the wirelessly is not recommended to use, with getorientation to replace, with this but not as before, you can get the data, need to use both geomagnetic sensors and accelerometer to obtain, the code is as follows: PackageCom.catcher.testcompass;Importandroid.app.Activity;ImportAndroid.hardware.Sensor;Importandroid.hardware.SensorEvent;ImportAndro

*/Private Sensoreventlistener Msensoreventlistener = new Sensoreventlistener () {@Overridepublic void Onsensorchanged (Sensorevent event) {/** sensor Data Changes *//** get the sensing coordinates on the phone in three directions */Float[] values = event.values;float x = values[0];Float y = values[1];float z = values[2];int sensorvalue = 20;if (Math.Abs (x) > Sensorvalue | | Math.Abs (y) > Sensorvalue | | Math.Abs (z) > Sensorvalue) {/** Vibration, T