Get_a_blur_image.m

+ (CGRect) screenFrame
{
    CGRect screenRect = [[UIScreen mainScreen] bounds];
    return screenRect;
}

+ (UIImage *)convertViewToImage
{
    UIWindow *keyWindow = [[UIApplication sharedApplication] keyWindow];
    CGRect rect = [keyWindow bounds];
    UIGraphicsBeginImageContextWithOptions(rect.size,YES,0.0f);
    CGContextRef context = UIGraphicsGetCurrentContext();
    [keyWindow.layer renderInContext:context];
    UIImage *capturedScreen = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return capturedScreen;
}

+ (UIImage *)convertViewToImageWithView:(UIView *)view
{
    CGRect rect = [view bounds];
    UIGraphicsBeginImageContextWithOptions(rect.size,YES,0.0f);
    CGContextRef context = UIGraphicsGetCurrentContext();
    [view.layer renderInContext:context];
    UIImage *capturedScreen = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return capturedScreen;
}

+ (UIImageView *) performScreenshotAndBlur
{
    UIImage * image = [self convertViewToImage];
    static GPUImageiOSBlurFilter *_blurFilter;
    UIImageView *bg = [[UIImageView alloc] initWithFrame:[HelpersClass screenFrame]];
    
    
    _blurFilter = [[GPUImageiOSBlurFilter alloc] init];
    _blurFilter.blurRadiusInPixels = 2.0;
    UIImage *blurredSnapshotImage = [_blurFilter imageByFilteringImage:image];
    
    
    [bg setImage:blurredSnapshotImage];
    bg.alpha = 1.0;
    //    [[[[UIApplication sharedApplication] delegate] window] addSubview:bg];
    
    return bg;
}

+ (UIImageView *) performScreenshotAndBlurForView:(UIView *)view
{
    UIImage * image = [self convertViewToImageWithView:view];
    static GPUImageiOSBlurFilter *_blurFilter;
    UIImageView *bg = [[UIImageView alloc] initWithFrame:[HelpersClass screenFrame]];
    
    
    _blurFilter = [[GPUImageiOSBlurFilter alloc] init];
    _blurFilter.blurRadiusInPixels = 2.0;
    UIImage *blurredSnapshotImage = [_blurFilter imageByFilteringImage:image];
    
    
    [bg setImage:blurredSnapshotImage];
    bg.alpha = 1.0;
    //    [[[[UIApplication sharedApplication] delegate] window] addSubview:bg];
    
    return bg;
}


+ (UIImage *)imageWithImage:(UIImage *)image scaledToSize:(CGSize)newSize
{
    UIGraphicsBeginImageContextWithOptions(newSize, NO, 0.0);
    [image drawInRect:CGRectMake(0, 0,newSize.width, newSize.height)];
    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return newImage;
}