ios - 如何获取 UIImage 的大小 (KB)

Question

我从didFinishPickingMediaWithInfo.

UIImage *originalImage = (UIImage*)[info valueForKey:UIImagePickerControllerOriginalImage];

我想以 Kb 为单位获取 Image 的大小。

Answer 1

    UIImage *originalImage = (UIImage*)[info valueForKey:UIImagePickerControllerOriginalImage];
    NSData *imgData = UIImageJPEGRepresentation(originalImage, 1); //1 it represents the quality of the image.
    NSLog(@"Size of Image(bytes):%d",[imgData length]);
    imgData = nil;

Answer 2

我认为 op 的size (kb)内存大小是originalImage，对吧？

查看malloc_sizeARC 下的用法，请参阅this。

#import <malloc/malloc.h>

NSLog(@"Size of %@: %zd", NSStringFromClass([originalImage class]), malloc_size((__bridge const void *)originalImage));