Android Orientation Sensor (Direction Sensor) details and applications, androidorientation
I. Preface
This blog is my first article on "Android advanced". It has been around for more than four months since I started Android, and I have some experiences, I can also do something on my own. Thanks to the android development tips of our company and the omnipotent
Basic tutorial for Android -- 10.11 sensor topic (2) -- orientation SensorBasic tutorial for Android -- 10.11 sensor topic (2) -- orientation Sensor
Tags (separated by spaces): basic Android tutorial
This section introduces:
In the previous section, we learned some basic c
After Android2.2, orientation sensors was deprecated.The official proposal is to use acceleration and magnetic sensor to calculateOn this question, csdn on a very good blog post.http://blog.csdn.net/flowingflying/article/details/43233315On stack Overflow:Http://stackoverflow.com/questions/10291322/what-is-the-alternative-to-android-orientation-sensorUse the words
;
caseSensor.TYPE_LIGHT: // Process the data returned by the light sensor
tvLight.setText("Brightness :"+ event.values[0]);
break;
caseSensor.TYPE_MAGNETIC_FIELD: // Process the data returned by the Magnetic Field Sensor
String magentic ="Magnetic field \ n" + "X:" + event.values[0] +"\n" + "Y:"
+ event.values[1] +"\n"
ObjectiveAndroid provides support for device sensors, and as long as the Android device's hardware provides these sensors, Android apps can access the device's external conditions through sensors, including the phone's running status, the current orientation, and so on. The Android system also provides drivers to manage these sensor hardware, which can be used by listeners to monitor changes in the external
) sensor, rotation vector (rotational vector) sensorLet's look at the coordinates of the sensor world:
The coordinate system of the sensor world
is not already feeling a bit.
(2) Environmental sensors
Such sensors can measure parameters in different environments, such as ambient air temperature and pressure, light intensity and humidity. includes several se
Android provides support for device sensors, and as long as the Android device's hardware provides these sensors, Android apps can access the device's external conditions through sensors, including the phone's running status, the current orientation, and so on. The Android system also provides drivers to manage these sensor hardware, which can be used by listeners to monitor changes in the external environm
In the recent project, to achieve the mobile operation of Android devices in six directions, the first thing that comes to mind is the direction sensor. However, due to the diversity of Android devices, in the testing process, not all devices have direction sensors. If there is no direction sensor, acceleration sensors are used, but one drawback is that when horizontal movement occurs, there will be an erro
Basic tutorial for Android -- 10.10 sensor topic (1) -- IntroductionBasic tutorial for Android -- 10.10 sensor topic (1) -- Introduction
Tags (separated by spaces): basic Android tutorial
1. Sensor introduction:
Speaking of sensors, I believe everyone will be familiar with it. For example, an acceleration sensor is u
direction of the z axis from the phone to point to the sky.
The following are the meanings that the elements of the values variable represent in the primary sensor.
1.1 Direction Sensor
The 3 values of the value variables in the directional sensor represent degrees, and their meanings are as follows:
VALUES[0]: This va
Android acceleration Sensor G-sensor, androidg-Sensor
Sensor. TYPE_ACCELEROMETER
Values [0]: x-axis AccelerationValues [1]: acceleration in y-axis directionValues [2]: acceleration in the z-axis direction
The x, y, and z directions are defined as the coordinates of the reference system at the bottom right of
UIDeviceOrientationRefers to the physical orientation of the device whereas UIInterfaceOrientation refers to the orientation of the user interface.UIDeviceOrientationis a property UIDevice of the class, and there is these possible values: uideviceorientationunknown-can " t be Determined uideviceorientationportrait- Home button facing Downuideviceorientationportraitupsidedown - Home button facing Upuidevi
This article illustrates how Android uses the sensor sensor to get the direction of a user's movement. Share to everyone for your reference, specific as follows:
Today continue to share a second important sensor, in fact, to get the direction of the things should be very simple, in the previous article to see that there is a type_orientation keyword, you can dir
In general, getting the location information of the phone in the Android system has the Type_orientation constant in the API, which can be obtained as the accelerometer sensor Sm.getdefaultsensor (sensor.type_ ORIENTATION); However, we do so in the latest version of the SDK will see this sentence: "Type_orientation this constant is deprecated. Use Sensormanager.getorientation () instead. "That way also expi
subtract the corresponding offset from the data read from the accelerometer to obtain linear acceleration.
The coordinate system of the sensor is the same as that of the acceleration sensor. Its measurement unit is (m/s2 ).
Rotating Vector Sensor
The rotation vector uses a combination of angles and axes to represent the orie
This article describes the entire process of transferring sensor data from the driver to the application, as well as the problem of data correction.
How can an application set its own orientation to change with the device's inclination? Android: screenorientation in the androidmanifest. xml file. Here we will trace its internal mechanism.First look at one of the most critical components:/frameworks/base/COR
direction sensor to determine the position of the current device relative to its own reference system.
Both the magnetic field sensor and the direction sensor return three values (sensorevent. values), while the adjacent sensor returns only one value.
Direction SensorSensorevent. Values [0]:
The angle of rotation arou
Detects the orientation of the mobile phone to the UIDevice and the orientation to the uidevice.
-(Void) viewDidLoad {[super viewDidLoad]; // you can call the UIDevice and begingeneratingdeviceorientationconfigurations method to send the orientation information to the notification center [[UIDevice currentDevice] begingeneratingdeviceorientationconfigurations]. /
Android screen adaptive orientation and android adaptive Orientation
Recently, I feel like I am getting stuck on the screen ......The Android phone is Xiami. How many resolutions can it have? Why !!!!!!! Amen ......There are two solutions ......First:HTML5 + CSS3 + WebView interaction ...... I am still studying it. I am leaving the demo empty.Second:Use the android UI's own layout to handle the following:1.
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.