objective-c - 当我将图像保存到文件时，保存的方向是错误的

Question

当我将图像保存到文件时，它以错误的方向保存。

- (void)saveImage:(UIImage *)image:(NSString *)imageName
{
   NSData *imageData = UIImagePNGRepresentation(image);         
   NSFileManager *fileManager = [NSFileManager defaultManager];   
   NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, 
       NSUserDomainMask, YES);
   NSString *documentsDirectory = [paths objectAtIndex:0];         
   NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:
      [NSString stringWithFormat:@"%@.png", imageName]];
   [fileManager createFileAtPath:fullPath contents:imageData attributes:nil];
}

谢谢。

Answer 1

尝试另存为 jpeg:

NSData *imageData = UIImageJPEGRepresentation(image,1.0);

如果您需要将其保存为 PNG，请查看此讨论: UIImagePNGRepresentation ..... writeToFile is always landscape