- (CGSize)getImageSizeWithURL:(NSURL *)url
{
CGImageSourceRef imageSource = CGImageSourceCreateWithURL((CFURLRef)url, NULL);
CGFloat width = 0.0f, height = 0.0f;
if (imageSource)
{
CFDictionaryRef imageProperties = CGImageSourceCopyPropertiesAtIndex(imageSource, 0, NULL);
if (imageProperties != NULL)
{
CFNumberRef widthNum = CFDictionaryGetValue(imageProperties, kCGImagePropertyPixelWidth);
if (widthNum != NULL) {
CFNumberGetValue(widthNum, kCFNumberFloatType, &width);
}
CFNumberRef heightNum = CFDictionaryGetValue(imageProperties, kCGImagePropertyPixelHeight);
if (heightNum != NULL) {
CFNumberGetValue(heightNum, kCFNumberFloatType, &height);
}
CFRelease(imageProperties);
}
CFRelease(imageSource);
NSLog(@"Image dimensions: %.0f x %.0f px", width, height);
}
return CGSizeMake(width, height);
}
调用只需要
CGSize siz = [self getImageSizeWithURL:[NSURL URLWithString:@"http://h.hiphotos.baidu.com/zhidao/pic/item/6d81800a19d8bc3ed69473cb848ba61ea8d34516.jpg"]];
