如何將圖像保存到沙箱 - iPhone SDK

Question

我已經從UIImagePicker thingy中拉出了一張圖像，我想暫時將其保存到沙箱環境中，無論是在文檔文件夾還是其他類似的等效物。但是，我不知道該怎麼做，請有人幫助我嗎？由於

目前的形象是一個UIImage

Answer 1

保存圖像：

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

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

} 

加載圖像

-(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]; 

}