accelerometer

问题 With UIInterpolatingMotionEffect, twist the iPhone, and you can have an image move. Now: imagine a red block you will "bounce around" on screen, using UICollisionBehavior and UIDynamicItemBehavior. When the user twists the iPhone: I want the boxes to "start moving" WITH SIMILAR PHYSICS FEEL to using UIInterpolatingMotionEffect. http://tinypic.com/player.php?v=b67mlc%3E&s=8#.VBVEq0uZNFx Aside:UX explanation: the bouncy effect (example: SMS on iPhone) has the same "feel" as the parallax image

问题 How do we achieve a control similar to this game? https://play.google.com/store/apps/details?id=com.fridgecat.android.atiltlite&hl=en 回答1: You can do this with builtin physics: create a level from some simple scaled cubes (don't forget the ground). add the ball - a sphere, then and add a RigidBody to it. Set a constraint on the rigidbody - check freeze position y (or it will be able to jump out of the level if you put the device upside down). add this script anywhere on the scene (for example

问题 I have been working on Orientation estimation and I need to estimate correct heading when I am walking in straight line. After facing some roadblocks, I started from basics again. I have implemented a Complementary Filter from here, which uses Gravity vector obtained from Android (not Raw Acceleration), Raw Gyro data and Raw Magnetometer data. I am also applying a low pass filter on Gyro and Magnetometer data and use it as input. The output of the Complementary filter is Euler angles and I am

问题 I have made android app that plays next song when shake once using Accelerometer. Now what i want my in app if a shake the phone in right side it should play the next song in line or if shake in left play previous, can i do it with the logic of axis found at time of shake action if that is possible how can I put axis to the methods of motion detection to know the direction in which the mobile is shaked . If any one have a logic for this please help i am stuck here. 回答1: I did some digging

问题 I am writing an iPhone/iPad app. I need to compute the acceleration and deceleration in the direction of travel of a vehicle traveling in close to a straight horizontal line with erratic acceleration and deceleration. I have the sequence of 3 readings from the X,Y,Z orthogonal accelerometers. But the orientation of the iphone/ipad is arbitrary and the accelerometer readings include vehicle motion and the effect of gravity. The result should be a sequence of single acceleration values which

问题 We are planning to write a software that would track a Car's GPS position, GPS signal strength, Accelerometer (X, Y, Z) and Gyroscope(X, Y, Z) for every 5 seconds or so. And send the data up to a server for post processing. The server would determine what are roads that are covered car. So this is not a real time processing. It can happen in the backend (over the night as batch process) When the GPS signal goes down, say for 30 seconds. The post processing should guess the lat and lon using

问题 I am coding an Android application but I have some trouble using the accelerometer. Strangely, my function onSensorChanged() is not called and I don't know why :/ Could you help me please ? :) Here's my code : @SuppressLint("NewApi") public class Game extends Activity implements SensorEventListener { SensorManager sensorManager; ImageView vaisseau; TextView test; RelativeLayout rl; @SuppressLint("NewApi") @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate

问题 I'm working on a simple compass type application for Android, testing on Xoom WiFi. The accuracy of the accelerometer readings is always SensorManager.SENSOR_STATUS_UNRELIABLE . The magnetic field readings are always accuracy SensorManager.SENSOR_STATUS_ACCURACY_HIGH . Could this be a bug in the Xoom, or is there a problem in my code? onCreate: mSensorManager = (SensorManager)getSystemService(Context.SENSOR_SERVICE); accelGravitySensor = mSensorManager.getDefaultSensor(Sensor.TYPE

问题 I successfully implemented code that takes array data and runs a fast fourier transform on it, using Apple's Accelerate Framework (performed on iOS device). My question now is what is the scale of the frequency axis? The results have peaks as expected in certain frequency ranges, but I'm not sure what the frequency should be. The Accelerate Framework's FFT functions take in an array and spit out an array with the same (or more) number of data points. Does it assume that all those points are

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . Is it just me or can I not find a simple tutorial on accessing the accelerometer in android via google search? Every other time I