CODEWITHSUNDEEP
ioscocoa-touchuiview
Octave1
Octave1

Reputation: 525

taking a screenshot of a UIView in iOS

I'm running iOS 4.3 & trying to take a screenshot of a UIView which is playing a movie. The problem is that the screenshot (in the simulator) turns out to be simply a black background & not the movie image i was hoping for. My code is below, any ideas what the matter might be? thanks in advance :)

- (void) takeScreenshot;
{

    UIGraphicsBeginImageContextWithOptions(self.frame.size, NO, 0.0);
    [self.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *screenshot = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    UIImageView *movieImage = [[UIImageView alloc] initWithImage:screenshot];
    [self addSubview:movieImage];

}

Upvotes: 4

Views: 1289

Answers (1)

Octave1
Octave1

Reputation: 525

I eventually found a solution to this issue - as joerick mentioned above one can't take a screenshot (using renderInContext) as the movie is using an OpenGL layer to draw its video.

However there is a way to take a thumbnail of a movie (shown below for the current playback time):

UIImage *image = [moviePlayer thumbnailImageAtTime:moviePlayer.currentPlaybackTime timeOption:MPMovieTimeOptionNearestKeyFrame];

Hope this helps someone out :)

Upvotes: 2

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