Alasdair Allan - Basic Sensors in iOS [2011, PDF, ENG]

Сообщение Солнышко » 31 янв 2018, 22:21

Basic Sensors in iOS
Год: 2011
Автор: Alasdair Allan
Жанр: Programming for iOS
Издательство: O`Reilly
ISBN: 978-1-449-30846-9
Язык: Английский
Формат: PDF
Качество: Отсканированные страницы
Интерактивное оглавление: Нет
Количество страниц: 106
Описание: Over the last few yea rs the new generation of smart phones, such as Apple's iPhone, has finally sta rted to live up to their name and have become the primary interface device for geographically tagged data. However not only do these devices know where they are, they can tell you how they're being held, they are sufficiently powerful to overlay data layers on the camera view, and record and interpret audio data, and they can do all this in real time. These are not just smart phones, these are computers that just happen to be able to make phone calls.
This book should provide a solid introduction to using the hardware features in the iPhone, iPod touch, and iPad.
The Hardware 1
Available Sensor Hardware 1
Differences Between iPhone and iPad 2
Device Orientation and the iPad 4
Detecting Hardware Differences 4
Camera Availability 5
Audio Input Availability 5
GPS Availability 6
Magnetometer Availability 6
Setting Required Hardware Capabilities 6
Persistent WiFi 7
Background Modes 7
Using the camera 9
The Hardware 9
Capturing Stills and Video 10
Video Thumbnails 18
Video Thumbnails Using the UI ImagePicker 18
Video Thumbnails Using AV Foundation 19
Saving Media to the Photo Album 20
Video Customization 23
Using Audio 25
The Hardware 25
Media Playback 26
Recording and Playing Audio 31
Recording Audio 32
Playing Audio 35
Using the Accelerometer 37
About the Accelerometer 37
Writing an Accelerometer Application 38
Determining Device Orientation 43
Determining Device Orientation Directly Using the Accelerometer 46
Obtaining Notifications when Device Orientation Changes 48
Which Way Is Up? 49
Convenience Methods for Orientation 52
Detecting Shaking 53
Using the Magnetometer 57
About the Magnetometer 57
Writing a Magnetometer Application 59
Determining the Heading in Landscape Mode 62
Measuring a Magnetic Field 68
Using Core Motion 71
Core Motion 71
Pulling Motion Data 72
Pushing Motion Data 73
Accessing the Gyroscope 75
Measuring Device Motion 79
Comparing Device Motion with the Accelerometer 83
Going Further 87
The iPhone SDK 87
Geolocation and Maps 87
Third-Party SDKs 87
Speech Recognition 88
Computer Vision 88
Augmented Reality 88
External Accessories 88





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