Convert UIView Layer to UIImage

Question

I\'m playing Video using AVPlayerLayer in a View. I need to convert View to Image, I tried

[myview.layer renderInContext:context];

but thi

Answer 1

The MPMoviePlayerController makes it easy to get a image from a movie at a certain point in the movie.

    - (UIImage*)imageFromVideoAtPath:(NSString *)path atTime:(NSTimeInterval)time {
    NSURL *videoURL = [NSURL fileURLWithPath:path];
    MPMoviePlayerController *moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:videoURL];
    [moviePlayer prepareToPlay];
    UIImage *thumbnail = [moviePlayer thumbnailImageAtTime:time timeOption:MPMovieTimeOptionNearestKeyFrame];
    [moviePlayer stop];
    return thumbnail;
}

Just call this with the path of the video, and at the time you want to get the image.

Answer 2

Try taking a screenshot and clipping. Otherwise you may have to render view and all its subviews recursively.

-(UIImage *)videoScreenCap:(CGRect)cropRect{
if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)])
    UIGraphicsBeginImageContextWithOptions(self.window.bounds.size, NO, [UIScreen mainScreen].scale);
else
    UIGraphicsBeginImageContext(self.window.bounds.size);
    [self.window.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    NSData * data = UIImagePNGRepresentation(image);
    [data writeToFile:@"foo.png" atomically:YES];
CGImageRef imageRef = CGImageCreateWithImageInRect([largeImage CGImage], cropRect);
UIImage * img = [UIImage imageWithCGImage:imageRef]; 
CGImageRelease(imageRef);
return img;
}

Answer 3

you can save your UIView as Image in Document Diretory like:

-(IBAction)ViewTOimage:(id)sender
{


    UIGraphicsBeginImageContext(self.view.bounds.size); //instad of self.view you can set your view IBOutlet name 
    [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *saveImage = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();
    NSData *imageData = UIImagePNGRepresentation(saveImage);
    NSFileManager *fileMan = [NSFileManager defaultManager];

    NSString *fileName = [NSString stringWithFormat:@"%d.png",1];
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *pdfFileName = [documentsDirectory stringByAppendingPathComponent:fileName];
    [fileMan createFileAtPath:pdfFileName contents:imageData attributes:nil];



}

Answer 4

-(UIImage *)imagefromview {
    UIGraphicsBeginImageContext(view.frame.size);
    [[self imageFromView:view] drawInRect:view.frame];
    [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *resultingImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return resultingImage;
}

Answer 5

I one of the project i used the below code to take an image from playing video might this help you too... take a look and try adjusting the code with your's.

#import <AVFoundation/AVFoundation.h>

@property (nonatomic,retain) AVCaptureStillImageOutput * resultImageOutput;

- (UIImage*)stillImageFromVideo
{  
    AVCaptureConnection *videoConnection = nil;
    for (AVCaptureConnection *connection in [[self resultImageOutput] connections]) {
        for (AVCaptureInputPort *port in [connection inputPorts]) {
            if ([[port mediaType] isEqual:AVMediaTypeVideo]) {
                videoConnection = connection;
                break;
            }
        }
        if (videoConnection) { 
            break; 
        }
    }

    [[self resultImageOutput] captureStillImageAsynchronouslyFromConnection:videoConnection 
    completionHandler:^(CMSampleBufferRef imageSampleBuffer, NSError *error) { 
         CFDictionaryRef exifAttachments = CMGetAttachment(imageSampleBuffer,   
   kCGImagePropertyExifDictionary, NULL);

        NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageSampleBuffer];    
        UIImage *image = [[UIImage alloc] initWithData:imageData];
        return image;  
    }
}

Answer 6

Please try below code. It is working perfectly for me.

And refer UIKit Function Reference.

+ (UIImage *) imageWithView:(UIView *)view
{
    UIGraphicsBeginImageContextWithOptions(view.bounds.size, view.opaque, 0.0);
    [view.layer renderInContext:UIGraphicsGetCurrentContext()];

    UIImage * img = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    return img;
}

Also try this.