如何将图像保存到沙箱 - iPhone SDK

Question

我已经从 UIImagePicker 中提取了一个图像，我想将其临时保存到沙盒环境中，无论是在文档文件夹中，还是在其他类似的文件夹中。但是，我不知道该怎么做，请问有人可以帮助我吗？谢谢

目前图像是 UIImage

Answer 1

保存图像：

-(void)saveImage:(UIImage*)image{
    NSString  *imagePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/someImageName.png"];

   [UIImagePNGRepresentation(image) writeToFile:imagePath atomically:YES];

}

加载图像

-(UIImage)loadImage{

   NSString  *imagePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/someImageName.png"];

   UIImage *image = [UIImage imageWithContentsOfFile:imagePath];
}

Answer 2

-(void)SaveImage

{

NSData *data;

NSArray *paths;

NSString *documentsDirectory,*imagePath ;

UIImage *image=[UIImage imageNamed:@"public.png"];

 paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

documentsDirectory = [paths objectAtIndex:0];

imagePath = [documentsDirectory stringByAppendingPathComponent:[NSString   stringWithFormat:@"public.png"]];

data = UIImagePNGRepresentation(image);

[data writeToFile:imagePath atomically:YES];

}