android orientation sensor

Tag: Picture is rotated to the same directionOne of the things that must be considered when using camera images in Android apps is the orientation of the image, which can be better displayed only by judging the direction of the image. This article will introduce a way to judge the orientation of a picture by Exifinterface!On the code:/** * * Use the picture under

In 2.2, you can set the screen direction to reverse the horizontal screen: setrequestedorientation (8); because the system does not publish the setting of this parameter, but the screen_orientation_reverse_landscape parameter has been defined in the source code, however, the orientation of the screen cannot be fixed to reverse landscape screen or right landscape screen. When setting the screen direction to the Right horizontal screen, you must note th

Android practice simple tutorial-62nd guns (electronic Sensor exact Compass) Here we use the sensor provided by the mobile phone to implement a simple small example of the electronic compass. You can learn how to use the SensorManager class, SensorEventListener and its overwriting method. First, create a layout file: Then the Activity file:

This article describes the Android approach to obtaining gravitational induction acceleration based on sensor sensors. Share to everyone for your reference, specific as follows: FETC Project Guidance teacher put forward new requirements, want to show in the game map user users in the direction of the period of movement, and then using GPS is obviously very unreliable, so think of the

Android Automatic Sensormanager is easy to use, but in some cases we want to encapsulate the functionality: Using only individual sensor, the function is relatively single The raw data returned by the sensor will be processed by the algorithm to use the Multiple frequent calls to disable sensor data in

Gesture operation can be said to be a smart phone charm, the first two sections to explain the two interesting gestures, put them in the game, greatly enhance the game's playful and interesting. This section will continue to introduce another magical thing about smartphones: sensors. first, what is the sensor The so-called sensor is to be able to detect such as light, heat, temperature, gravity, direction

Referece to:http://blog.csdn.net/mybook1122/article/details/24978025This online search, a lot of results are:Androidmanifest.xmlAndroid:configchanges= "Keyboardhidden|orientation"But, actually, on many phones, this doesn't work at all. What is this for?Because, but the majority routinization, the article goes directly, did not have the result own practice.On the lower version, this is working. Above Android

Sensor Coordinate System Generally, the sensor framework uses a standard 3-axis coordinate system to express data values. For most sensors, the coordinate system is defined relative to the screen of the device when the device is kept in the default direction (1 ). When the device is kept in the default direction, the X axis is horizontal to the right, the Y axis is vertical up, And the Z axis is pointed to

Added support for light sensor based on Android 2.2: 1) UI 2) Framework section 3) Hal part 4) Driver The following are discussed respectively: 1) UI A) Enable the brightness setting menu to automatically adjust the brightness checkbox. Frameworks/base/CORE/RES/values/config. xml: - + B) set both the Lux level and the brightness level. Take the 5-level brightness as an example. + 2) Framework sectionA) f

) {return LoadBitmap (Imgpath),} else {Bitmap BM = LoadBitmap (imgpath); int digree = 0; Exifinterface exif = null;try {exif = new exifinterface (Imgpath);} catch (IOException e) {e.printstacktrace (); exif = null; }if (exif = null) {//Read camera orientation information in picture int ori = Exif.getattributeint (exifinterface.tag_orientation, exifinterface.orientation_undefined);//Calculate rotation angle switch (ORI) {case ExifInterface.ORIENTATION_

),} else {Bitmap BM = LoadBitmap (imgpath); int digree = 0; Exifinterface exif = null;try {exif = new exifinterface (Imgpath);} catch (IOException e) {e.printstacktrace (); exif = null; }if (exif = null) {//Read camera orientation information in picture int ori = Exif.getattributeint (exifinterface.tag_orientation, exifinterface.orientation_undefined);//Calculate rotation angle switch (ORI) {case ExifInterface.ORIENTATION_ROTATE_90:digree = 90; Break;

The path to Android development and learning-sensor experience There are still many sensors, such as acceleration, light, and magnetic sensors. Of course, android phones are called smartphones, and these sensors are indispensable. Next I will learn about light, acceleration, and magnetism. Create an emSensorStudy project. The layout is as follows: Add the LightSe