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I'm getting into iOS and coming with an Android background. Will I have to manually allocate and remove memory in Objective C? I'm getting conflicting answers from blog posts... How does ARC fit in to this?
Yes it is, ARC is the garbage collection system in iOS that checks for nil references and then auto deallocates the objects for you. You still have to manually allocate objects yourself.
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How to detect if an application is launched with objective-c for mac?
"Is an application launched" can be somewhat subtle. It depends on exactly what kind of application it is, and the lines aren't always clear. That said, for the most common cases (and likely what you're looking for), use NSWorkspace:
NSArray *apps = [[NSWorkspace sharedWorkspace] runningApplications];
You can search through that to find the NSRunningApplication you care about. Typically the best property to use is bundleIdentifier.
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I am using the OpenCv Library for the object detection.
I downloaded the given example of face detection. In this example they are using haarcascade_frontalface_default.xml.
I have to detect Nail in hand. Please suggest me how can I do it?
I also saw this-
http://docs.opencv.org/doc/tutorials/features2d/detection_of_planar_objects/detection_of_planar_objects.html#detectionofplanarobjects
Please suggest me how I detect nail in hand.
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Is there a way to not stop the iPod music when I start my app in the iPhone?
Because when my app is launched, the music stops.
Thanks!
It depends what code and sound Library you are using in your application
adding MediaPlayer.framework will help you solve the issue quickly
Take a look at this post http://oleb.net/blog/2009/07/the-music-player-framework-in-the-iphone-sdk/
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Is there any way of getting a list of, say 4, recently opened Applications? If so, how?
(Cocoa Mac)
Have a look at the LaunchServices/LSSharedFileList.h header file. Unfortunately, the functions in this file are not documented in the Xcode docs, but the comments in the file are very good. Basically, you create a reference to the list of recently opened applications by passing kLSSharedFileListRecentApplicationItems to LSSharedFileListCreate(). Then get an array of the current contents of the list with LSSharedFileListCopySnapshot().
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It is possible to do that?
please give me a hint.
I would investigate ffmpeg, specifically libavcodec - this will allow you to convert static images in to a movie file (assuming you can get it to compile for iOS).
As far as adding to the iPod library is concerned, you aint going to be able to do that - you can read from the library from within an iOS app, but not write to it.