June 2011
Intermediate to advanced
590 pages
19h 31m
English
Content preview from iOS Programming: The Big Nerd Ranch Guide, Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Getting Accelerometer Data
In HypnosisViewController.m, add the following implementation of the UIAccelerometer delegate method, accelerometer:didAccelerate:. This method will log accelerometer updates to the console. Notice that the types of the two parameters are different even though they look similar:
- (void)accelerometer:(UIAccelerometer *)meter
didAccelerate:(UIAcceleration *)accel
{
NSLog(@"%f, %f, %f", [accel x], [accel y], [accel z]);
}
Build and run the application on your device. Watch the console as you rotate and shake the phone to get a feel for the data that the accelerometer ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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