Download e-book for kindle: Basic Sensors in iOS: Programming the Accelerometer, by Alasdair Allan

By Alasdair Allan

ISBN-10: 1449308465

ISBN-13: 9781449308469

Basic Sensors in iOS: Programming the Accelerometer, Gyroscope, and extra by way of Alasdair Allan
2011 | 106 Pages | ISBN: 1449308465 | writer: O’Reilly Media | PDF | 6 MB + eleven MB

What rather units the iPhone except laptops and desktops is its use of onboard sensors, together with those who are location-enabled. This concise publication takes skilled iPhone and Mac builders on an in depth travel of iPhone and iPad by means of explaining how those sensors paintings, and what they're able to doing.
With this ebook, you'll construct pattern purposes for every sensor, and study hands-on the best way to reap the benefits of the information each one sensor produces. You'll achieve priceless adventure that you should instantly placed to paintings inside of your personal iOS purposes for the iPhone, iPod contact, and iPad.

This publication is helping you concentration on:

  • Camera:
  • learn the way to take images and video, create video thumbnails, customise video, and keep media to the picture album

  • Audio:
  • use the media picker controller and entry the iPod song library on your personal software, and let your app to list and play sampled audio

  • Accelerometer:
  • write an software that makes use of this sensor to figure out gadget orientation

  • Magnetometer:
  • learn how this sensor verifies compass headings

  • Core Motion:
  • use this framework to obtain movement information from either the accelerometer and the vibrational gyroscope

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    Additional info for Basic Sensors in iOS: Programming the Accelerometer, Gyroscope, and More

    Sample text

    I talk about how to do this in Chapter 6. It is therefore possible, even likely, that the UIAccelerome ter class discussed in this chapter my be deprecated in a future iOS release. xib file to open it into Interface Builder. Since you want to both report the raw figures from the accelerometer and also display them using a progress bar, go ahead and drag and drop three UIProgressView controls from the Object Library into the View window. Then add two UILabel elements for each progress bar: one to hold the X, Y, or Z label and the other to hold the accelerometer measurements.

    At the very least you must provide some way for the user to pause or stop playback, and perhaps to change their selection. The MPMusicPlayerCon troller class provides two methods: the beginGeneratingPlaybackNotifications: method, and a corresponding endGeneratingPlaybackNotifications:. Add the highlighted line below to your mediaPicker:didPickMediaItems: delegate method: - (void) mediaPicker:(MPMediaPickerController *) mediaPicker didPickMediaItems:(MPMediaItemCollection *) userMediaItemCollection { [self dismissModalViewControllerAnimated: YES]; musicPlayer = [MPMusicPlayerController applicationMusicPlayer]; [musicPlayer setQueueWithItemCollection: userMediaItemCollection]; Media Playback | 29 } [musicPlayer beginGeneratingPlaybackNotifications]; When the begin method is invoked the class will start to generate notifications when the player state changes and when the current playback item changes.

    0. I talk about how to do this in Chapter 6. It is therefore possible, even likely, that the UIAccelerome ter class discussed in this chapter my be deprecated in a future iOS release. xib file to open it into Interface Builder. Since you want to both report the raw figures from the accelerometer and also display them using a progress bar, go ahead and drag and drop three UIProgressView controls from the Object Library into the View window. Then add two UILabel elements for each progress bar: one to hold the X, Y, or Z label and the other to hold the accelerometer measurements.

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    Basic Sensors in iOS: Programming the Accelerometer, Gyroscope, and More by Alasdair Allan


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