2d barcode generator c# free MPVolumeSettingsAlertShow MPVolumeSettingsAlertHide MPVolumeSettingsAlertIsVisible in Objective-C

Encoding QR Code JIS X 0510 in Objective-C MPVolumeSettingsAlertShow MPVolumeSettingsAlertHide MPVolumeSettingsAlertIsVisible

MPVolumeSettingsAlertShow MPVolumeSettingsAlertHide MPVolumeSettingsAlertIsVisible
QR Creation In Objective-C
Using Barcode encoder for iPhone Control to generate, create Denso QR Bar Code image in iPhone applications.
www.OnBarcode.com
QR Code 2d Barcode Generator In Objective-C
Using Barcode generator for iPhone Control to generate, create QR Code ISO/IEC18004 image in iPhone applications.
www.OnBarcode.com
Note that these are functions, not methods. They re not tied to any class, but rather are generally available once you ve loaded the Media Player framework.
EAN128 Drawer In Objective-C
Using Barcode generation for iPhone Control to generate, create EAN / UCC - 13 image in iPhone applications.
www.OnBarcode.com
Barcode Maker In Objective-C
Using Barcode drawer for iPhone Control to generate, create Barcode image in iPhone applications.
www.OnBarcode.com
WARNING
UPC - 13 Drawer In Objective-C
Using Barcode encoder for iPhone Control to generate, create EAN13 image in iPhone applications.
www.OnBarcode.com
Code-128 Creator In Objective-C
Using Barcode creator for iPhone Control to generate, create Code 128 Code Set A image in iPhone applications.
www.OnBarcode.com
At the time of this writing, the volume controls do not work in the iPhone Simulator.
Barcode Generator In Objective-C
Using Barcode drawer for iPhone Control to generate, create Barcode image in iPhone applications.
www.OnBarcode.com
Drawing Universal Product Code Version E In Objective-C
Using Barcode maker for iPhone Control to generate, create UPCE image in iPhone applications.
www.OnBarcode.com
18.5.3 Better integrating the media player The biggest problem with the media player is that it calls up a stand-alone screen. As a result, it s difficult to use it to integrate music or video directly into your program.
Decoding QR-Code In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
www.OnBarcode.com
Encoding Quick Response Code In Java
Using Barcode drawer for Android Control to generate, create Quick Response Code image in Android applications.
www.OnBarcode.com
Media: images and sounds
Code39 Reader In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Barcode Encoder In None
Using Barcode generator for Microsoft Excel Control to generate, create Barcode image in Microsoft Excel applications.
www.OnBarcode.com
Figure 18.4 The media player doesn t integrate music well.
PDF 417 Decoder In C#.NET
Using Barcode scanner for VS .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Barcode Creator In Java
Using Barcode encoder for Java Control to generate, create Barcode image in Java applications.
www.OnBarcode.com
For music, the problem is relatively unsolvable at this time. As shown in figure 18.4, when music plays, the screen is taken over by a large QuickTime logo. We hope that future versions of the SDK will give you the option to define a background for when sounds are playing (or better, allow you to remain within your normal views, thus truly integrating the media player s audio capability). For playing videos, the biggest problem is the controls, because you don t want users to manipulate the video if you re using it as a cut scene. You can resolve this by setting the MPMoviePlayerController s movieControlMode property to MPMovieControlModeVolumeOnly (which only allows use of the volume control) or MPMovieControlModeHidden (which doesn t allow users to access any controls). Given this ability to hide the movie controls, the media player should be all you ever require to display video, but it continues to come up short for audio use, forcing you to seek alternatives. Unfortunately, there are no high-level frameworks for playing audio, so you ll have to do quite a bit of work to get things going. A lot of these specifics lie beyond the scope of this book because of their complexity, but we re going to get you started with the simplest methods for dealing with audio outside of the media player.
Encode 1D In C#.NET
Using Barcode maker for .NET Control to generate, create Linear image in .NET applications.
www.OnBarcode.com
UPCA Creator In None
Using Barcode drawer for Software Control to generate, create GS1 - 12 image in Software applications.
www.OnBarcode.com
18.6 Playing sounds manually
UPC-A Supplement 2 Reader In Visual Studio .NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Printing PDF-417 2d Barcode In Visual C#
Using Barcode creator for Visual Studio .NET Control to generate, create PDF-417 2d barcode image in VS .NET applications.
www.OnBarcode.com
It s not entirely correct to say that there s no high-level framework for iPhone audio. There is, and it s called Celestial. Unfortunately, Celestial is one of many private frameworks on the iPhone, which means that it s being used internally at Apple but hasn t been made available to external developers. We ve opted in this book not to talk about the jailbreak methods that you can use to access private frameworks, as they re likely to change at any time, and using them could make your program exceedingly vulnerable to OS upgrades. Instead, we need to fall back to the frameworks officially provided by Apple. And there are a lot of them! The iPhone s Core Audio system contains over a halfdozen frameworks that give you access to audio files at a low level. These include Audio Queue Services, Audio File Stream Services, Audio File Services, OpenAL, Audio Session Services, and more. For an in-depth look at all this, refer to the Audio & Video section of the Apple reference library, beginning with Getting Started with Audio & Video and Core Audio Overview.
Draw UCC - 12 In None
Using Barcode creator for Font Control to generate, create GS1 128 image in Font applications.
www.OnBarcode.com
Barcode Drawer In None
Using Barcode printer for Online Control to generate, create Barcode image in Online applications.
www.OnBarcode.com
Playing sounds manually
These frameworks are all old enough that they haven t been pulled out of Core Foundation, so you re going to have to fall back on the lessons that you ve learned from your occasional forays into those older programming styles. We re only going to graze the surface of audio. We ll provide some examples of how to play simple sounds and vibrate the iPhone, but for the more complex Audio Queue Services, we re going to outline the process and point you to Apple s extensive tutorials on the subject.
18.6.1 Playing simple sounds System Sound Services is a C interface that lets you play simple sounds and vibrate your iPhone. It s part of the Audio Toolbox framework and is declared in AudioToolbox/AudioServices.h. This interface can only be used to play short audio files of 30 seconds or less in .aif, .caf, or .wav formats. To use System Sound Services, you create a system sound ID from a file, optionally create a callback for when the sound is done playing, and launch it. Table 18.6 shows the major functions.
Table 18.6 Major functions of the System Sound Services Function Arguments Summary Creates a sound from a URL Removes a sound when done Registers a callback for sound play completion Removes a callback when done Plays a sound
AudioServicesCreateSystemSoundID AudioServicesDisposeSystemSoundID AudioServicesAddSystemSoundCompletion
Copyright © OnBarcode.com . All rights reserved.