accelerometer

Is there a special method to get iPhones orientation? I don't need it in degrees or radians, I want it to return an UIInterfaceOrientation object. I just need it for an if-else construction like if(currentOrientation==UIInterfaceOrientationPortrait ||currentOrientation==UIInterfaceOrientationPortraitUpsideDown) { //Code } if (currentOrientation==UIInterfaceOrientationLandscapeRight ||currentOrientation==UIInterfaceOrientationLandscapeLeft ) { //Code } Thanks in advance! Satyajit This is most likely what you want: UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication]

I am drawing on canvas based on device movement, I want to draw different characters in canvas based on mobile movement. Currently its working, but I want to find time difference and i want to detect pause, pause means when user is not trying to draw and user is not moving mobile phone, so that Application ca assume that now user want to draw next character. How to find pause in accelerometer values. Any logic? Also tell me how i can smooth accelerometer values, so that user can draw lines without noise. I cannot help with the accelerator part, but for the noise in the data, here is one

I am new in iPhone development, I am developing an app in which I have to use accelerometer for painting on screen . Please help me out is this can be done-able if so help me. You are looking for the gyro mouse , 3 lines of code. Watch this video , the gyro mouse is presented at 37:00-38:25. So long story short, you need the gyroscopes ( CMRotationRate ). 来源： https://stackoverflow.com/questions/13084192/how-to-use-accelerometer-for-paint-on-a-screen-in-iphone

My game uses the accelerometer, everything works fine but I noticed there is going to be a slight issue with some phones. The game forces the orientation to be landscape however some phones have a default screen orientation of landscape... Right now I was always assuming the user was going to have to tilt their phone to see the game correctly, this would mean the accelerometer reading for the X axis would move the player in the Y and the Y reading would move the player in the X. With the phones that have a default landscape screen the X will correspond to the X in game and the Y for the Y in

I have one class name as myClassCalculate have the following method - (void) accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration { NSLog(@"Accelerometer is called"); } I am making object in - (void)applicationDidFinishLaunching:(UIApplication *)application { // Override point for customization after app launch myObject = [[myClassCalculate alloc] init]; now when app will go in background, I want this - (void) accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration { What can I do, so that this method will get called in

I can use this method of the Core Motion framework: - (void)startAccelerometerUpdatesToQueue:(NSOperationQueue *)queue withHandler:(CMAccelerometerHandler)handler as an alternative to the - (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration UIAccelerationDelegate method of UIKit. There, I have to specify the frequency of updates. I want to get acceleration data as fast and accurate as possible. Is Core Motion my friend here? What's the frequency of readings I can expect from that method of Core Motion? The documentation doesn't talk about it. Edit

Is there a way to calculate the height between ground and your phone ? I thought i could use accelerometer to measure height but this post suggest that you should not use it considering the inaccuracy rate. If so what approach should i take to measure the height where my phone is held ? GPS is accurate enough for you to get the elevation to within a few meters, but that's probably not what you're going for. I suppose you could try some sort of sonar, after you determine that the phone's mic/speaker is pointing straight towards the ground with the accelerometer. You could assume STP, which