CODEWITHSUNDEEP
objective-cxcodemacoscocoa
Andy Hin
Andy Hin

Reputation: 31863

OSX: How to maintain compatibility with older OSX/SDK

I have a piece of code like this: 

        AVCaptureScreenInput *input = [[AVCaptureScreenInput alloc] initWithDisplayID:screen.displayID];
        input.capturesCursor = NO;
        input.capturesMouseClicks = NO;

AVCaptureScreenInput.capturesCursor is only available in 10.8+. My app supports 10.7+.

How do I maintain compatibility? Should I remove the call completely? Check the OS version at runtime?

Upvotes: 1

Views: 69

Answers (1)

Marcos Crispino
Marcos Crispino

Reputation: 8218

You should check if the property exists in runtime.

This code should do the trick:

AVCaptureScreenInput *input = [[AVCaptureScreenInput alloc] initWithDisplayID:screen.displayID];
if ([input respondsToSelector:@selector(setCapturesCursor:)]) {
    input.capturesCursor = NO;
}
input.capturesMouseClicks = NO;

Upvotes: 4

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