+ (NSDictionary *)SeparateImage:(UIImage *)image ByX:(int)x andY:(int)y cacheQuality:(float)quality { if (x < 1) { return nil; } else if (y < 1) { return nil; } if (![image isKindOfClass:[UIImage class]]) { return nil; } float _xstep = image.size.width * 1.0 / ( y + 1); float _ystep = image.size.height * 1.0 / (x + 1); NSMutableDictionary *_mutableDictionary = [[[NSMutableDictionary alloc] initWithCapacity:1]autorelease]; NSString *prefixName = @"win"; for (int i = 0; i < x; i++) { for (int j = 0; j < y; j++) { CGRect rect = CGRectMake(_xstep * j, _ystep * i, _xstep, _ystep); CGImageRef imageRef = CGImageCreateWithImageInRect([image CGImage], rect); UIImage *elementImage = [UIImage imageWithCGImage:imageRef]; UIImageView *_imageView = [[UIImageView alloc] initWithImage:elementImage]; _imageView.frame = rect; NSString *_imageString = [NSString stringWithFormat:@"%@_%d_%d.jpg", prefixName, i, j]; [_mutableDictionary setObject:_imageView forKey:_imageString]; if (quality <= 0) continue; quality = (quality > 1) ? 1 : quality; NSString *_imagePath = [NSHomeDirectory() stringByAppendingPathComponent:_imageString]; NSData * _imageData = UIImageJPEGRepresentation(elementImage, quality); [_imageData writeToFile:_imagePath atomically:NO]; } } NSDictionary *_dictionary = _mutableDictionary; return _dictionary; }
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转载自eric-gao.iteye.com/blog/1734606
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